We discuss crystal formation in supersaturated suspensions of monodisperse hard spheres with a concentration of hard spheres randomly pinned in space and time. The pinning procedure introduces an external length scale and an external time scale that restrict the accessible number of configureurations and ultimately the number of pathways leading to crystallization. We observe a significant drop in the nucleation rate density at a characteristic pinning concentration that can be directly related to the structure of the critical nucleus and the dynamics of its formation in the unpinned system.
{"title":"Influence of Random Pinning on the Crystallization Process in Suspensions of Hard Spheres","authors":"S. Dorosz, T. Schilling","doi":"10.4236/JCPT.2014.42012","DOIUrl":"https://doi.org/10.4236/JCPT.2014.42012","url":null,"abstract":"We discuss crystal formation in supersaturated suspensions of \u0000monodisperse hard spheres with a concentration of hard spheres randomly pinned \u0000in space and time. The pinning procedure introduces an external length scale \u0000and an external time scale that restrict the accessible number of configureurations \u0000and ultimately the number of pathways leading to crystallization. We observe a \u0000significant drop in the nucleation rate density at a characteristic pinning \u0000concentration that can be directly related to the structure of the critical \u0000nucleus and the dynamics of its formation in the unpinned system.","PeriodicalId":64440,"journal":{"name":"结晶过程及技术期刊(英文)","volume":"4 1","pages":"89-98"},"PeriodicalIF":0.0,"publicationDate":"2013-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70943231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The solubility, induction period and nucleation parameters of pure and amino acids like L-arginine, L-lysine and L-alanine doped potassium dihydrogen phosphate (KDP) crystals have been determined. Solubility study of pure and amino acids doped KDP crystals were carried out for different temperatures. The induction period was measured at different supersaturation level. The nucleation parameters like interfacial tension, radius of critical nucleus and energy of formation were calculated based on the classical theory of nucleation. Values of different parameters were found to be larger for amino acid doped crystals than pure KDP crystal.
{"title":"Nucleation Kinetics of L-Arginine, L-Lysine and L-Alanine Doped Potassium Dihydrogen Phosphate Crystals","authors":"K. Parikh, B. Parekh, D. J. Dave, M. Joshi","doi":"10.4236/JCPT.2013.33015","DOIUrl":"https://doi.org/10.4236/JCPT.2013.33015","url":null,"abstract":"The solubility, induction period and nucleation parameters of pure and amino acids like L-arginine, L-lysine and L-alanine doped potassium dihydrogen phosphate (KDP) crystals have been determined. Solubility study of pure and amino acids doped KDP crystals were carried out for different temperatures. The induction period was measured at different supersaturation level. The nucleation parameters like interfacial tension, radius of critical nucleus and energy of formation were calculated based on the classical theory of nucleation. Values of different parameters were found to be larger for amino acid doped crystals than pure KDP crystal.","PeriodicalId":64440,"journal":{"name":"结晶过程及技术期刊(英文)","volume":"03 1","pages":"92-96"},"PeriodicalIF":0.0,"publicationDate":"2013-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70941812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Line broadening in a diffraction intensity profile of powdered crystalline materials due to stacking fault has been characterized in terms of the zeroth, first, second, third, and fourth moments and the fourth cumulant. Calculations have been derived showing that the first moment causes a shift in the peak position of the profile while the third moment affects its shape. The intensity expression has been derived on the basis of usual Cartesian coordinates and also of polar coordinates indicated by the probability of the fault and the reciprocal lattice parameter as the two axes. The expressions for the fourth cumulant have also been so derived. Here we have used three different approaches to determine methods for calculating the fourth cumulant due to stacking faults. The three forms of the equations derived here are for different coordinate systems, but will arrive at the same answers.
{"title":"Moments and Cumulants of Diffraction Profiles Broadened by Stacking Faults","authors":"G. B. Mitra","doi":"10.4236/JCPT.2013.33017","DOIUrl":"https://doi.org/10.4236/JCPT.2013.33017","url":null,"abstract":"Line broadening in a diffraction intensity profile of powdered crystalline materials due to stacking fault has been characterized in terms of the zeroth, first, second, third, and fourth moments and the fourth cumulant. Calculations have been derived showing that the first moment causes a shift in the peak position of the profile while the third moment affects its shape. The intensity expression has been derived on the basis of usual Cartesian coordinates and also of polar coordinates indicated by the probability of the fault and the reciprocal lattice parameter as the two axes. The expressions for the fourth cumulant have also been so derived. Here we have used three different approaches to determine methods for calculating the fourth cumulant due to stacking faults. The three forms of the equations derived here are for different coordinate systems, but will arrive at the same answers.","PeriodicalId":64440,"journal":{"name":"结晶过程及技术期刊(英文)","volume":"03 1","pages":"103-107"},"PeriodicalIF":0.0,"publicationDate":"2013-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70941884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Earlier we observed a movement of the front of ions in the bulk of an ordered LC sample across which the driven voltage was applied [1]. This movement looked as waving zigzag curvatures in the pattern of interference strips. It was shown that behind the movable front of ions, the LC volume was getting charged. The author has found out that, in his pioneer experiments made in 1974, he observed the similar electrooptical phenomena on a single crystal of niobate-strontium-barium (NBS). Just after applying driving voltage (in a crossed electrical field crystal sample geometry) a system of curved interference strips is arising, which is evolving for the time period of about ten minutes at the driven voltage being kept constant. The evolution of the interference stripes pattern near positive, negative electrodes and in middle part of sample occurs in some different ways. At the end of evolution the system of strips disappears and the sample becomes practically homogeneous. The described process can be observed only once at the first applying of the driving voltage. This process is caused by redistribution of charges frozen at the crystallization and which are having an opportunity of the recombination at the first applying of the driving voltage. The obtained results are discussed with the possible applying the given experimental technique for solid and LCs parameters studying.
{"title":"Effect of Electrical Defloration in Liquid and Solid Crystals","authors":"V. Tsvetkov","doi":"10.4236/JCPT.2013.33016","DOIUrl":"https://doi.org/10.4236/JCPT.2013.33016","url":null,"abstract":"Earlier we observed a movement of the front of ions in the bulk of an ordered LC sample across which the driven voltage was applied [1]. This movement looked as waving zigzag curvatures in the pattern of interference strips. It was shown that behind the movable front of ions, the LC volume was getting charged. The author has found out that, in his pioneer experiments made in 1974, he observed the similar electrooptical phenomena on a single crystal of niobate-strontium-barium (NBS). Just after applying driving voltage (in a crossed electrical field crystal sample geometry) a system of curved interference strips is arising, which is evolving for the time period of about ten minutes at the driven voltage being kept constant. The evolution of the interference stripes pattern near positive, negative electrodes and in middle part of sample occurs in some different ways. At the end of evolution the system of strips disappears and the sample becomes practically homogeneous. The described process can be observed only once at the first applying of the driving voltage. This process is caused by redistribution of charges frozen at the crystallization and which are having an opportunity of the recombination at the first applying of the driving voltage. The obtained results are discussed with the possible applying the given experimental technique for solid and LCs parameters studying.","PeriodicalId":64440,"journal":{"name":"结晶过程及技术期刊(英文)","volume":"3 1","pages":"97-102"},"PeriodicalIF":0.0,"publicationDate":"2013-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70941861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
P. S. Patil, V. M. Bhumannavar, M. Bannur, Harish N. Kulkarni, G. Bhagavannarayana
A series of five chalcone derivatives with different substituents in para and meta posions have been synthesized, and single crystals were successfully grown in aceton solution by slow evaporation solution growth technique (SESGT). Single crystal X-ray studies revealed that all the crystals crystallized in noncentrosymmetric space group with their molecular dipoles perfectly aligned in a direction-favorable for large nonlinear optical effects. Kurtz powder tests revealed that all five materials have second-harmonic-generating properties with maximum efficiencies of approximately 14 times that of urea standard. UV-vis-NIR spectroscopy and thermogravimetric analyses are also presented for all of the reported materials. Among the five chalcones, high quality single crystals of 4-Methoxy-4'-chlorochalcone were grown by SESGT, and its crystalline perection were studied by using a high resolution X-ray diffractometry (HRXRD).
{"title":"Second Harmonic Generation in Some Donor-Acceptor Substituted Chalcone Derivatives","authors":"P. S. Patil, V. M. Bhumannavar, M. Bannur, Harish N. Kulkarni, G. Bhagavannarayana","doi":"10.4236/JCPT.2013.33018","DOIUrl":"https://doi.org/10.4236/JCPT.2013.33018","url":null,"abstract":"A series of five chalcone derivatives with different substituents in para and meta posions have been synthesized, and single crystals were successfully grown in aceton solution by slow evaporation solution growth technique (SESGT). Single crystal X-ray studies revealed that all the crystals crystallized in noncentrosymmetric space group with their molecular dipoles perfectly aligned in a direction-favorable for large nonlinear optical effects. Kurtz powder tests revealed that all five materials have second-harmonic-generating properties with maximum efficiencies of approximately 14 times that of urea standard. UV-vis-NIR spectroscopy and thermogravimetric analyses are also presented for all of the reported materials. Among the five chalcones, high quality single crystals of 4-Methoxy-4'-chlorochalcone were grown by SESGT, and its crystalline perection were studied by using a high resolution X-ray diffractometry (HRXRD).","PeriodicalId":64440,"journal":{"name":"结晶过程及技术期刊(英文)","volume":"3 1","pages":"108-117"},"PeriodicalIF":0.0,"publicationDate":"2013-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70941969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nonlinear optical single crystals of L-phenylalanine-4-nitrophenol have been grown by the slow evaporation method. The grown crystal was subjected to the single crystal X-ray diffraction analysis, to confirm that it belongs to the monoclinic crystal structure, with space group P21. The optical transmission study reveals the transparency of the crystal in the entire visible region and the cut off wave length has been found to be 320 nm. The optical band gap is found to be 3.87 eV. The transmittance of the L-phenylalanine-4-nitrophenol crystal has been used to calculate the refractive index (n), the extinction coefficient (K) and the real (er) and imaginary (ei) components of the dielectric constant. The mechanical behaviour of the grown crystals was studied using Vicker’s microhardness tester. The dielectric constant and dielectric loss of L-phenylalanine-4-nitrophenol are measured in the frequency range of 50 Hz to 5 MHz at different temperatures. The photoconductivity study confirms the negative photoconductive nature of the sample.
{"title":"The Growth and the Optical, Mechanical, Dielectric and Photoconductivity Properties of a New Nonlinear Optical Crystal—L-Phenylalanine-4-nitrophenol NLO Single Crystal","authors":"S. Suresh","doi":"10.4236/JCPT.2013.33014","DOIUrl":"https://doi.org/10.4236/JCPT.2013.33014","url":null,"abstract":"Nonlinear optical single crystals of L-phenylalanine-4-nitrophenol have been grown by the slow evaporation method. The grown crystal was subjected to the single crystal X-ray diffraction analysis, to confirm that it belongs to the monoclinic crystal structure, with space group P21. The optical transmission study reveals the transparency of the crystal in the entire visible region and the cut off wave length has been found to be 320 nm. The optical band gap is found to be 3.87 eV. The transmittance of the L-phenylalanine-4-nitrophenol crystal has been used to calculate the refractive index (n), the extinction coefficient (K) and the real (er) and imaginary (ei) components of the dielectric constant. The mechanical behaviour of the grown crystals was studied using Vicker’s microhardness tester. The dielectric constant and dielectric loss of L-phenylalanine-4-nitrophenol are measured in the frequency range of 50 Hz to 5 MHz at different temperatures. The photoconductivity study confirms the negative photoconductive nature of the sample.","PeriodicalId":64440,"journal":{"name":"结晶过程及技术期刊(英文)","volume":"2013 1","pages":"87-91"},"PeriodicalIF":0.0,"publicationDate":"2013-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4236/JCPT.2013.33014","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70942206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The experimental results of a research of the solar cells parameters covered with films InxSnyOz, and solar cells covered with films, obtained by dispersion of alcoholic solutions of three-chloride Indium acetyl acetonate of aluminum are represented. The spectral dependencies of reflection factor and open circuit voltage of the film-covered solar cells are obtained. The conditions of deriving and properties of porous silicon and parameters of the solar cells with films of porous silicon and covers, forming a potential barrier, are investigated. It is shown that for optimum parameters of films deriving the solar cells with efficiency 15.8% is possible.
{"title":"Investigation of the Solar Cells with Films of Porous Silicon and β-Diketonates","authors":"S. Khrypko","doi":"10.4236/JCPT.2013.33013","DOIUrl":"https://doi.org/10.4236/JCPT.2013.33013","url":null,"abstract":"The experimental results of a research of the solar cells parameters covered with films InxSnyOz, and solar cells covered with films, obtained by dispersion of alcoholic solutions of three-chloride Indium acetyl acetonate of aluminum are represented. The spectral dependencies of reflection factor and open circuit voltage of the film-covered solar cells are obtained. The conditions of deriving and properties of porous silicon and parameters of the solar cells with films of porous silicon and covers, forming a potential barrier, are investigated. It is shown that for optimum parameters of films deriving the solar cells with efficiency 15.8% is possible.","PeriodicalId":64440,"journal":{"name":"结晶过程及技术期刊(英文)","volume":"2013 1","pages":"81-86"},"PeriodicalIF":0.0,"publicationDate":"2013-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70942139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Recently, the efforts in solid-state materials include developing technologies capable of producing ZnO wafers in large dimensions and good quality based device applications. High quality bulk crystals are obtained by growing from high purity the melt. However, the thermochemical properties of ZnO (high melting point and high vapor pressure) make the growth of single crystals difficult. The thermodynamic calculations show that ZnO crystals can be grown from the melt if a suitable dynamic atmosphere composition is used. The oxygen requirement with increasing the temperature can be fulfilled by adding the NO-NO2 gases into the CO2 atmosphere. At ZnO melting point, the oxygen partial pressure of gas mixtures containing CO2-NO-CO-NO2 at Pt = 5 atm reaches to PO2 = 0.29 atm. According to this new thermodynamic result, it would be expected that ZnO crystal could be grown from the melt at lower total pressure comparing to pure CO2.
{"title":"Thermodynamic Analysis of ZnO Crystal Growth from the Melt","authors":"M. Asadian","doi":"10.4236/JCPT.2013.33012","DOIUrl":"https://doi.org/10.4236/JCPT.2013.33012","url":null,"abstract":"Recently, the efforts in solid-state materials include developing technologies capable of producing ZnO wafers in large dimensions and good quality based device applications. High quality bulk crystals are obtained by growing from high purity the melt. However, the thermochemical properties of ZnO (high melting point and high vapor pressure) make the growth of single crystals difficult. The thermodynamic calculations show that ZnO crystals can be grown from the melt if a suitable dynamic atmosphere composition is used. The oxygen requirement with increasing the temperature can be fulfilled by adding the NO-NO2 gases into the CO2 atmosphere. At ZnO melting point, the oxygen partial pressure of gas mixtures containing CO2-NO-CO-NO2 at Pt = 5 atm reaches to PO2 = 0.29 atm. According to this new thermodynamic result, it would be expected that ZnO crystal could be grown from the melt at lower total pressure comparing to pure CO2.","PeriodicalId":64440,"journal":{"name":"结晶过程及技术期刊(英文)","volume":"3 1","pages":"75-80"},"PeriodicalIF":0.0,"publicationDate":"2013-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70941394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The crystallization kinetics of Se80In10Pb10 chalcogenide glass is studied using differential scanning calorimeter (DSC) at different heating rates (5, 10, 15 and 20 K/min) under non-isothermal conditions. Four iso-conversional methods (Kissinger-Akahira-Sunose, Flynn-Wall-Ozawa, Tang and Straink) were used to determine various kinetic parameters: crystallization temperature (Tα), activation energy of crystallization (Eα), Avrami exponent (nα) in non-isothermal mode. The transformation from amorphous to crystalline phase in Se80In10Pb10 is considered as a single step reaction mechanism.
{"title":"Study of Crystallization Process in Se 80 In 10 Pb 10 by Iso-Conversional Methods","authors":"I. Ram, Kedar Singh","doi":"10.4236/JCPT.2013.32007","DOIUrl":"https://doi.org/10.4236/JCPT.2013.32007","url":null,"abstract":"The crystallization kinetics of Se80In10Pb10 chalcogenide glass is studied using differential scanning calorimeter (DSC) at \u0000different heating rates (5, 10, 15 and 20 K/min) under non-isothermal \u0000conditions. Four iso-conversional methods (Kissinger-Akahira-Sunose, \u0000Flynn-Wall-Ozawa, Tang and Straink) were used to determine various kinetic \u0000parameters: crystallization temperature (Tα), \u0000activation energy of crystallization (Eα), \u0000Avrami exponent (nα) in \u0000non-isothermal mode. The transformation from amorphous to crystalline phase in \u0000Se80In10Pb10 is considered as a single step \u0000reaction mechanism.","PeriodicalId":64440,"journal":{"name":"结晶过程及技术期刊(英文)","volume":"64 1","pages":"49-55"},"PeriodicalIF":0.0,"publicationDate":"2013-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70941305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yi-Chen Chan, Abdussalam Salhin Mohamed Ali, M. Khairuddean, B. Salleh
A Schiff base, (E)-ethyl-4-(2-oxoacenaphthylen-1(2H)-ylideneamino)benzoate, (E4AB) had been synthesized in good yield by the acid-catalyzed condensation reaction of acenaphthenequinone and ethyl-4-aminobenzoate in methanolic solution. The synthesized compound was elucidated by elemental analysis (CHN), FTIR, 1H-NMR, 13C-NMR and single crystal X-ray diffraction. E4AB crystallized in the monoclinic crystal system with space group P21/c, Z = 4, V = 1569.3(2) ?3 and unit cell parameters a = 9.1589(8) , b = 21.2003(17)?, c =8.4502(7) ?, β= 106.972(2)°. The crystal structure of the compound is stabilized by intermolecular C-H···O hydrogen bonds and weak intermolecular π···π interactions. The title compound had been tested for the antimicrobial activity against Bacillus subtilis (B. subtilis), Enterobacter and Fusarium oxysporum f. sp. Cubense (Foc) by disc-diffusion method. E4AB is relatively active against Foc which is a pathogen that cause Wilt disease (also well known as Panama disease) in banana plantation.
在甲醇溶液中，苊醌与4-氨基苯甲酸乙酯酸催化缩合反应，合成了席夫碱(E)-乙基-4-(2-氧苊-1(2H)-酰基氨基苯甲酸乙酯(E4AB)，收率较高。通过元素分析(CHN)、红外光谱(FTIR)、核磁共振(1H-NMR)、核磁共振(13C-NMR)和单晶x射线衍射对合成的化合物进行了表征。E4AB在单斜晶系中结晶，空间群为P21/c, Z = 4, V = 1569.3(2) ?3，晶胞参数a = 9.1589(8)， b = 21.2003(17)?， c =8.4502(7)°，β= 106.972(2)°。分子间的C-H··O氢键和分子间的弱π··π相互作用稳定了化合物的晶体结构。采用圆盘扩散法测定了该化合物对枯草芽孢杆菌(Bacillus subtilis)、肠杆菌(Enterobacter)和镰刀菌(Fusarium oxysporum f. sp. Cubense)的抑菌活性。E4AB对引起香蕉种植园枯萎病(也称为巴拿马病)的病原菌Foc具有较强的抑制活性。
{"title":"Synthesis, Crystal Structure and Antimicrobial Activity of (E)-ethyl-4-(2-oxoacenaphthylen-1(2H)-ylideneamino) benzoate","authors":"Yi-Chen Chan, Abdussalam Salhin Mohamed Ali, M. Khairuddean, B. Salleh","doi":"10.4236/JCPT.2013.32011","DOIUrl":"https://doi.org/10.4236/JCPT.2013.32011","url":null,"abstract":"A Schiff base, (E)-ethyl-4-(2-oxoacenaphthylen-1(2H)-ylideneamino)benzoate, (E4AB) had been synthesized in good yield \u0000by the acid-catalyzed condensation reaction of acenaphthenequinone and \u0000ethyl-4-aminobenzoate in methanolic solution. The synthesized compound was \u0000elucidated by elemental analysis (CHN), FTIR, 1H-NMR, 13C-NMR \u0000and single crystal X-ray diffraction. E4AB crystallized in the monoclinic \u0000crystal system with space group P21/c, Z = 4, V = 1569.3(2) ?3 and unit \u0000cell parameters a = 9.1589(8) , b = 21.2003(17)?, c =8.4502(7) ?, β= 106.972(2)°. \u0000The crystal structure of the compound is stabilized by intermolecular C-H···O hydrogen bonds and weak intermolecular π···π interactions. The title compound had been tested for \u0000the antimicrobial activity against Bacillus \u0000subtilis (B. subtilis), Enterobacter and Fusarium oxysporum f. sp. Cubense (Foc) by disc-diffusion method. \u0000E4AB is relatively active against Foc which is a pathogen that cause Wilt disease (also well known as Panama disease) \u0000in banana plantation.","PeriodicalId":64440,"journal":{"name":"结晶过程及技术期刊(英文)","volume":"38 1","pages":"69-73"},"PeriodicalIF":0.0,"publicationDate":"2013-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70941714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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