Pub Date : 2008-01-01DOI: 10.2116/ANALSCIX.24.X227
Yan-ling Guo, Xiaoyan Zhou, W. Dou, Weisheng Liu, Da‐qi Wang
The crystal structure of [Li(HL)] (H2L = 2,2′-(biphenyl-2,2′-diylbis(oxy))diacetic acid) was studied by X-ray diffraction methods. This complex crystallized in the monoclinic space group P21/c, with a = 13.970(11), b = 7.098(6), c = 16.097(12)A, β = 103.910(9)°, Z = 4, V = 1549(2)A3, and R = 0.0768. The crystal structure shows that the complex units are linked by classical intermolecular hydrogen bonds between an uncoordinated carboxyl of one complex molecule and an oxygen atom from a coordinated carboxyl of the adjacent complex molecule to form a single-helical chain. Two infinite homochiral helices self-assemble into a dimer through a non-classical C-H…π hydrogen bonding interaction.
用x射线衍射法研究了[Li(HL)] (H2L = 2,2′-(联苯-2,2′-二基双(氧))二乙酸)的晶体结构。该配合物在单斜空间群P21/c中结晶，a = 13.970(11)， b = 7.098(6)， c = 16.097(12) a， β = 103.910(9)°，Z = 4, V = 1549(2)A3, R = 0.0768。晶体结构表明，配合物单元由一个配合物分子的非配位羧基与相邻配合物分子的配位羧基氧原子之间的经典分子间氢键连接而成单螺旋链。两个无限的同手性螺旋通过非经典的C-H…π氢键相互作用自组装成二聚体。
{"title":"Crystal Structure of a Lithium Complex with 2,2'-(Biphenyl-2,2'-diylbis(oxy))diacetic Acid","authors":"Yan-ling Guo, Xiaoyan Zhou, W. Dou, Weisheng Liu, Da‐qi Wang","doi":"10.2116/ANALSCIX.24.X227","DOIUrl":"https://doi.org/10.2116/ANALSCIX.24.X227","url":null,"abstract":"The crystal structure of [Li(HL)] (H2L = 2,2′-(biphenyl-2,2′-diylbis(oxy))diacetic acid) was studied by X-ray diffraction methods. This complex crystallized in the monoclinic space group P21/c, with a = 13.970(11), b = 7.098(6), c = 16.097(12)A, β = 103.910(9)°, Z = 4, V = 1549(2)A3, and R = 0.0768. The crystal structure shows that the complex units are linked by classical intermolecular hydrogen bonds between an uncoordinated carboxyl of one complex molecule and an oxygen atom from a coordinated carboxyl of the adjacent complex molecule to form a single-helical chain. Two infinite homochiral helices self-assemble into a dimer through a non-classical C-H…π hydrogen bonding interaction.","PeriodicalId":7796,"journal":{"name":"Analytical Sciences: X-ray Structure Analysis Online","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82752526","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}
Pub Date : 2008-01-01DOI: 10.2116/ANALSCIX.24.X289
Liang Huang, Pinxian Xi, Min Xu, Tonghuan Liu, Z. Zeng
The title compound, C14H24N6O4S, was prepared by the reaction of ethyl N-(3-tossulfonyl)carbamate with metformin. It was crystallized in the triclinic system, space group P1 with a = 6.894(3)A, b = 8.323(4)A, c = 17.184(8)A, α = 84.119(7)°, β = 84.028(6)°, γ = 75.479(6)°, V = 946.4(7)A3, Z = 2, R = 0.0426. The molecules are linked by two kinds of hydrogen-bonds, N-H…N and N-H…O, generating an extended two-dimensional supramolecular network structure in the ab plane.
以甲双胍为原料，N-(3-磺酰基)氨基甲酸乙酯为原料，合成了标题化合物C14H24N6O4S。在三斜晶系P1中，空间群a = 6.894(3) a, b = 8.323(4) a, c = 17.184(8) a， α = 84.119(7)°，β = 84.028(6)°，γ = 75.479(6)°，V = 946.4(7)A3, Z = 2, R = 0.0426。分子由两种氢键N- h…N和N- h…O连接，在ab平面上形成扩展的二维超分子网络结构。
{"title":"Crystal Structure of Metformin·ethyl N-(3-tossulfonyl)carbamate","authors":"Liang Huang, Pinxian Xi, Min Xu, Tonghuan Liu, Z. Zeng","doi":"10.2116/ANALSCIX.24.X289","DOIUrl":"https://doi.org/10.2116/ANALSCIX.24.X289","url":null,"abstract":"The title compound, C14H24N6O4S, was prepared by the reaction of ethyl N-(3-tossulfonyl)carbamate with metformin. It was crystallized in the triclinic system, space group P1 with a = 6.894(3)A, b = 8.323(4)A, c = 17.184(8)A, α = 84.119(7)°, β = 84.028(6)°, γ = 75.479(6)°, V = 946.4(7)A3, Z = 2, R = 0.0426. The molecules are linked by two kinds of hydrogen-bonds, N-H…N and N-H…O, generating an extended two-dimensional supramolecular network structure in the ab plane.","PeriodicalId":7796,"journal":{"name":"Analytical Sciences: X-ray Structure Analysis Online","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84622511","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}
Mn[2-NMe2-α-SiMeC6H4]2 (I) is triclinic, P1. The unit-cell dimensions at 203 K are a=9.318(2)A, b=10.781(3)A, c=13.453(3)A, α=88.87(3)°, β=88.34(3)°, γ=76.91(2)°, V=1315.8(6)A3, Dx =1.181 g/cm3, and Z = 2. The final R value is 0.072 for 3442 measured reflections with I > 2σ(I). The structure is synthesized by the reaction of MnCl2 with 2-dimethylamino-R-trimethylsilylbenzyl-Li. The central Mn(II) metal has four coordination sites by forming a distorted tetrahedron.
Mn[2- nme2 -α-SiMeC6H4]2 (I)是三斜的，P1。203 K时的晶胞尺寸为a=9.318(2) a, b=10.781(3) a, c=13.453(3) a， α=88.87(3)°，β=88.34(3)°，γ=76.91(2)°，V=1315.8(6)A3, Dx =1.181 g/cm3, Z = 2。对于I > 2σ(I)的3442个实测反射，最终R值为0.072。该结构由MnCl2与2-二甲氨基- r -三甲基硅基苄基li反应合成。中心金属Mn(II)通过形成一个扭曲的四面体具有四个配位位点。
{"title":"Synthesis and Structural Characterization of Bis[2-dimethylamino-α-trimethylsilylbenzyl]Mn(II)","authors":"Hongbo Tong, Dian-sheng Liu","doi":"10.2116/ANALSCIX.24.X67","DOIUrl":"https://doi.org/10.2116/ANALSCIX.24.X67","url":null,"abstract":"Mn[2-NMe2-α-SiMeC6H4]2 (I) is triclinic, P1. The unit-cell dimensions at 203 K are a=9.318(2)A, b=10.781(3)A, c=13.453(3)A, α=88.87(3)°, β=88.34(3)°, γ=76.91(2)°, V=1315.8(6)A3, Dx =1.181 g/cm3, and Z = 2. The final R value is 0.072 for 3442 measured reflections with I > 2σ(I). The structure is synthesized by the reaction of MnCl2 with 2-dimethylamino-R-trimethylsilylbenzyl-Li. The central Mn(II) metal has four coordination sites by forming a distorted tetrahedron.","PeriodicalId":7796,"journal":{"name":"Analytical Sciences: X-ray Structure Analysis Online","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82947900","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 mononuclear complex [Fe(HL-Br)Cl(py)2]·C2H5OC2H5, [H3L-Br = 6-hydroxy-2-(5-bromo-2-hydroxyphenyl)-5-(5-bromosalicylideneamino)benzoxazole] was synthesized and characterized by single-crystal X-ray analysis. The compound crystallizes in the triclinic system, spaces group P1 and Z = 2 with cell parameters a = 9.0436(9)A, b = 14.284(4)A, c = 15.320(3)A, α = 64.002(14)°, β = 81.430(11)°, γ = 80.642(15)°, V = 1748.4(6)A3. The ligand (HL-Br)2- acts as a tridentate form, and the iron(III) has octahedral geometry. The crystal packing is stabilized by two types of inter molecular π-π stacking interactions.
合成了单核配合物[Fe(HL-Br)Cl(py)2]·C2H5OC2H5， [H3L-Br = 6-羟基-2-(5-溴-2-羟基苯基)-5-(5-溴水杨基氨基)苯并恶唑]，并用单晶x射线分析对其进行了表征。该化合物在三斜晶系中结晶，空间群P1和Z = 2，晶胞参数a = 9.0436(9) a, b = 14.284(4) a, c = 15.320(3) a， α = 64.002(14)°，β = 81.430(11)°，γ = 80.642(15)°，V = 1748.4(6)A3。配体(HL-Br)2-为三齿体，铁(III)为八面体。两种类型的分子间π-π堆叠相互作用稳定了晶体堆积。
{"title":"Synthesis and Crystal Structure of Mononuclear Iron(III) Complex of 6-Hydroxy-2-(5-bromo-2-hydroxyphenyl)-5-(5-bromosalicylideneamino)-benzoxazole","authors":"Masahiro Muto, Masayuki Koikawa, T. Tokii","doi":"10.2116/ANALSCIX.24.X47","DOIUrl":"https://doi.org/10.2116/ANALSCIX.24.X47","url":null,"abstract":"The mononuclear complex [Fe(HL-Br)Cl(py)2]·C2H5OC2H5, [H3L-Br = 6-hydroxy-2-(5-bromo-2-hydroxyphenyl)-5-(5-bromosalicylideneamino)benzoxazole] was synthesized and characterized by single-crystal X-ray analysis. The compound crystallizes in the triclinic system, spaces group P1 and Z = 2 with cell parameters a = 9.0436(9)A, b = 14.284(4)A, c = 15.320(3)A, α = 64.002(14)°, β = 81.430(11)°, γ = 80.642(15)°, V = 1748.4(6)A3. The ligand (HL-Br)2- acts as a tridentate form, and the iron(III) has octahedral geometry. The crystal packing is stabilized by two types of inter molecular π-π stacking interactions.","PeriodicalId":7796,"journal":{"name":"Analytical Sciences: X-ray Structure Analysis Online","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83336836","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}
Pub Date : 2008-01-01DOI: 10.2116/ANALSCIX.24.X191
H. Phetmung, Anon Samsao
{"title":"Synthesis and Crystal Structure of a Three-dimensional Copper(I) Complex with Ethylenethiourea and 4,4'-Bipyridine","authors":"H. Phetmung, Anon Samsao","doi":"10.2116/ANALSCIX.24.X191","DOIUrl":"https://doi.org/10.2116/ANALSCIX.24.X191","url":null,"abstract":"","PeriodicalId":7796,"journal":{"name":"Analytical Sciences: X-ray Structure Analysis Online","volume":"189 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83489268","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}
Pub Date : 2008-01-01DOI: 10.2116/ANALSCIX.24.X217
B. B. Baldaniya, M. Jotani
In the molecular structure, the central pyrimidine ring is significantly puckered, assuming an intermediate conformation between a screw boat and boat form. In the solid state, the short intramolecular C-H…S, intermolecular C-H…O and π-π stacking interactions contribute to the crystal packing.
{"title":"Crystal Structure of Ethyl (2Z)-2-(4-acetyloxybenzylidene)-7-methyl-3-oxo-5-phenyl-2,3-dihydro-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate","authors":"B. B. Baldaniya, M. Jotani","doi":"10.2116/ANALSCIX.24.X217","DOIUrl":"https://doi.org/10.2116/ANALSCIX.24.X217","url":null,"abstract":"In the molecular structure, the central pyrimidine ring is significantly puckered, assuming an intermediate conformation between a screw boat and boat form. In the solid state, the short intramolecular C-H…S, intermolecular C-H…O and π-π stacking interactions contribute to the crystal packing.","PeriodicalId":7796,"journal":{"name":"Analytical Sciences: X-ray Structure Analysis Online","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76775677","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}
K. Hansongnern, Luksamee Sahavisit, C. Pakawatchai
The complex [Ru(Clazpy)2Cl2] (Clazpy = 5-chloro-2-(phenylazo)pyridine) was synthesized and characterized by X-ray diffraction analysis. The geometry around ruthenium(II) was distorted octahedral with coordinating from two chloro ligands and four N-donor atoms of two Clazpy units. The chloros are cis while the N(pyridine) atoms are trans. The Ru-N(pyridine) distance (2.037(2)A) is slightly short compared to those in other ruthenium(II) complexes with azoimine ligands.
{"title":"Crystal Structure of cis-Bis(5-chloro-2-(phenylazo)pyridine)-dichlororuthenium(II)","authors":"K. Hansongnern, Luksamee Sahavisit, C. Pakawatchai","doi":"10.2116/ANALSCIX.24.X57","DOIUrl":"https://doi.org/10.2116/ANALSCIX.24.X57","url":null,"abstract":"The complex [Ru(Clazpy)2Cl2] (Clazpy = 5-chloro-2-(phenylazo)pyridine) was synthesized and characterized by X-ray diffraction analysis. The geometry around ruthenium(II) was distorted octahedral with coordinating from two chloro ligands and four N-donor atoms of two Clazpy units. The chloros are cis while the N(pyridine) atoms are trans. The Ru-N(pyridine) distance (2.037(2)A) is slightly short compared to those in other ruthenium(II) complexes with azoimine ligands.","PeriodicalId":7796,"journal":{"name":"Analytical Sciences: X-ray Structure Analysis Online","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76949095","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}
M. C. Lozada, R. Enríquez, B. Ortíz, M. Soriano-garcia
C25H28N2O6·0.50(C6H6) is monoclinic, C2/c. The unit-cell dimensions at 293 K are a = 13.968(2), b = 25.185(3), c = 15.050(2)A, β = 102.272(2)°, V = 5173.4(12)A3, Dx = 1.262 g/cm3, and Z = 8. The R value is R = 0.0766 for 1463 reflections. There is an intermolecular hydrogen bond with an N1…N1 distance of 2.851(7)A. The pyrazole ring adopts a distorted envelope conformation. The molecules in the crystal are packed at the normal van der Waals distances.
C25H28N2O6·0.50(C6H6)为单斜晶，C2/c。293 K时的单位胞尺寸为a = 13.968(2)， b = 25.185(3)， c = 15.050(2) a， β = 102.272(2)°，V = 5173.4(12)A3, Dx = 1.262 g/cm3, Z = 8。1463次反射的R值为R = 0.0766。分子间存在一个N1…N1距离为2.851(7)A的氢键。吡唑环采用扭曲包络构象。晶体中的分子以正常的范德华距离排列。
{"title":"Heterocyclic Derivatives of Curcumin: Crystal Structure of 3,5-Bis[β-(4-acetoxy-3-methoxyphenyl)ethyl]pyrazole Benzene Solvate","authors":"M. C. Lozada, R. Enríquez, B. Ortíz, M. Soriano-garcia","doi":"10.2116/ANALSCIX.24.X1","DOIUrl":"https://doi.org/10.2116/ANALSCIX.24.X1","url":null,"abstract":"C25H28N2O6·0.50(C6H6) is monoclinic, C2/c. The unit-cell dimensions at 293 K are a = 13.968(2), b = 25.185(3), c = 15.050(2)A, β = 102.272(2)°, V = 5173.4(12)A3, Dx = 1.262 g/cm3, and Z = 8. The R value is R = 0.0766 for 1463 reflections. There is an intermolecular hydrogen bond with an N1…N1 distance of 2.851(7)A. The pyrazole ring adopts a distorted envelope conformation. The molecules in the crystal are packed at the normal van der Waals distances.","PeriodicalId":7796,"journal":{"name":"Analytical Sciences: X-ray Structure Analysis Online","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76227649","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}
Pub Date : 2008-01-01DOI: 10.2116/ANALSCIX.24.X239
S. Gnoatto, J. Guillon, V. Pires, A. Dassonville-Klimpt, S. Nascimento, S. Massip, C. Jarry, G. Gosmann, P. Sonnet
The X-ray crystal structure of the antileishmanial 3-O-acetyloleanolic acid was established. It crystallizes in the orthorhombic space group P212121. The absolute configuration was determined by calculating the F(+)/F(-) ratios of Bijvoet pairs. Solid-state data could be used to clarify the mechanism of action implicating this antileishmanial hemisynthetic compound.
建立了抗利什曼3- o -乙酰齐墩果酸的x射线晶体结构。在正交空间群P212121中结晶。通过计算Bijvoet对的F(+)/F(-)比率确定了绝对构型。固体数据可以用来阐明作用机制暗示这种抗利什曼半合成化合物。
{"title":"Crystal Structure of 3-O-Acetyloleanolic Acid","authors":"S. Gnoatto, J. Guillon, V. Pires, A. Dassonville-Klimpt, S. Nascimento, S. Massip, C. Jarry, G. Gosmann, P. Sonnet","doi":"10.2116/ANALSCIX.24.X239","DOIUrl":"https://doi.org/10.2116/ANALSCIX.24.X239","url":null,"abstract":"The X-ray crystal structure of the antileishmanial 3-O-acetyloleanolic acid was established. It crystallizes in the orthorhombic space group P212121. The absolute configuration was determined by calculating the F(+)/F(-) ratios of Bijvoet pairs. Solid-state data could be used to clarify the mechanism of action implicating this antileishmanial hemisynthetic compound.","PeriodicalId":7796,"journal":{"name":"Analytical Sciences: X-ray Structure Analysis Online","volume":"67 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84875992","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}
Pub Date : 2008-01-01DOI: 10.2116/ANALSCIX.24.X101
S. Nirmala, E. Kamala, L. Sudha, E. Ramesh, R. Raghunathan
The title compound (C22H18N2O4) crystallizes in monoclinic space group P21/n with one-half molecule in the asymmetric unit. The complete molecule is generated by inversion symmetry. The structure was solved by direct methods and refined by full-matrix least-squares procedures to a final R = 0.046 and wR = 0.1187 using 2766 reflections. The piperazine and the cyclo-pentane rings adopt chair and envelope conformations, respectively. The molecular packing is stabilized by C-H…O and π…π interactions in addition to van der Walls forces.
{"title":"Crystal Structure of 1,4-Dimethyl 2.5[2′-dispiroindane-1,3-dione]piperazine","authors":"S. Nirmala, E. Kamala, L. Sudha, E. Ramesh, R. Raghunathan","doi":"10.2116/ANALSCIX.24.X101","DOIUrl":"https://doi.org/10.2116/ANALSCIX.24.X101","url":null,"abstract":"The title compound (C22H18N2O4) crystallizes in monoclinic space group P21/n with one-half molecule in the asymmetric unit. The complete molecule is generated by inversion symmetry. The structure was solved by direct methods and refined by full-matrix least-squares procedures to a final R = 0.046 and wR = 0.1187 using 2766 reflections. The piperazine and the cyclo-pentane rings adopt chair and envelope conformations, respectively. The molecular packing is stabilized by C-H…O and π…π interactions in addition to van der Walls forces.","PeriodicalId":7796,"journal":{"name":"Analytical Sciences: X-ray Structure Analysis Online","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87029857","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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