Abstract A series of hitherto unreported solid salts of penta‐coordinated cations of the general formula [R2SbL3]3+, where R = C6H5, p‐ClC6H4, p‐CH3C6H4, p‐(CH3O)C6H4; L = DMSO, Ph3AsO, Py‐N‐oxide, DMF, α‐, β‐, and γ‐picoline have been prepared in the presence of tetraphenyl‐ and tetrafluoro‐borate counterions. The complexes have been formulated and characterized on the basis of elemental analyses, molar conductances, molecular weights, and solid state IR and solution state 1H NMR spectral data. The physico‐chemical data are consistent with five‐coordinate antimony complexes.
{"title":"Syntheses and Structures of Complex Diorganoantimony(V) Cations of the Type [R2SbL3]3+","authors":"K. Singhal, R. Kant, R. Yadav, P. Pandey, P. Raj","doi":"10.1081/SIM-120030433","DOIUrl":"https://doi.org/10.1081/SIM-120030433","url":null,"abstract":"Abstract A series of hitherto unreported solid salts of penta‐coordinated cations of the general formula [R2SbL3]3+, where R = C6H5, p‐ClC6H4, p‐CH3C6H4, p‐(CH3O)C6H4; L = DMSO, Ph3AsO, Py‐N‐oxide, DMF, α‐, β‐, and γ‐picoline have been prepared in the presence of tetraphenyl‐ and tetrafluoro‐borate counterions. The complexes have been formulated and characterized on the basis of elemental analyses, molar conductances, molecular weights, and solid state IR and solution state 1H NMR spectral data. The physico‐chemical data are consistent with five‐coordinate antimony complexes.","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":"59 1","pages":"459 - 468"},"PeriodicalIF":0.0,"publicationDate":"2004-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89175218","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}
Xuan Shen, Akio Nakashima, K. Sakata, M. Hashimoto
Abstract The reaction of Ge(tmtaa)Cl2 [5,14‐dihydro‐6,8,15,17‐tetramethyldibenzo[b,i][1,4,8,11]tetraazacyclotetradecine (H2tmtaa)] and sodium cyanate or sodium acetate under mild conditions results in mononuclear six‐coordinate tmtaa Ge(IV) complexes, Ge(tmtaa)X2 [X=NCO, (1); X=OCOCH3, (2)], containing Ge–N or Ge–O bonds, respectively. The complexes, (1) and (2), have been characterized by IR spectra, UV spectra, mass spectra, NMR spectra, and elemental analyses, as well as DSC measurements. X‐ray crystal structures of (1) and (2) reveal that the tmtaa ligand of the complexes retains the characteristic saddle‐shaped configuration of H2tmtaa and the complexes have adopted six‐coordinate geometries in which two substituents are in trans positions.
{"title":"Syntheses, Characterization, and Crystal Structures of Two Trans Six‐Coordinate Germanium(IV) Complexes of H2tmtaa (5,14‐Dihydro‐6,8,15,17‐tetramethyldibenzo[b,i][1,4,8,11]‐tetraazacyclotetradecine)","authors":"Xuan Shen, Akio Nakashima, K. Sakata, M. Hashimoto","doi":"10.1081/SIM-120028298","DOIUrl":"https://doi.org/10.1081/SIM-120028298","url":null,"abstract":"Abstract The reaction of Ge(tmtaa)Cl2 [5,14‐dihydro‐6,8,15,17‐tetramethyldibenzo[b,i][1,4,8,11]tetraazacyclotetradecine (H2tmtaa)] and sodium cyanate or sodium acetate under mild conditions results in mononuclear six‐coordinate tmtaa Ge(IV) complexes, Ge(tmtaa)X2 [X=NCO, (1); X=OCOCH3, (2)], containing Ge–N or Ge–O bonds, respectively. The complexes, (1) and (2), have been characterized by IR spectra, UV spectra, mass spectra, NMR spectra, and elemental analyses, as well as DSC measurements. X‐ray crystal structures of (1) and (2) reveal that the tmtaa ligand of the complexes retains the characteristic saddle‐shaped configuration of H2tmtaa and the complexes have adopted six‐coordinate geometries in which two substituents are in trans positions.","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":"69 1","pages":"211 - 222"},"PeriodicalIF":0.0,"publicationDate":"2004-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86901465","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}
S. Tyagi, Nisha Singh, Sukhmahendra Singh, U. Singh
Abstract Mixed‐ligand complexes of Co(II), Ni(II), Cu(II), Zn(II), and Cd(II) with 5‐fluorocytosine (5FC) and guanine (G) have been prepared in aqueous ethanol solution at pH of about 7. The prepared complexes were characterized by various physico‐chemical methods viz. elemental analyses, infrared, UV‐visible, magnetic measurements, and powder x‐ray pattern. On the basis of IR studies, it is suggested that G acts as bidentate ligand coordinating through the N3 and N7 nitrogens whereas 5FC behaves as a monodentate and coordinates to the metal ions through the carbonyl oxygen only. These complexes were subjected to a screening system of Dalton's lymphoma (DL) tumor cells both in vivo and in vitro. Some complexes exhibit significant antitumor activity both in vivo and in vitro.
{"title":"Synthesis, Structural, and Antitumor Studies of Some 5‐Fluorocytosine and Guanine Complexes","authors":"S. Tyagi, Nisha Singh, Sukhmahendra Singh, U. Singh","doi":"10.1081/SIM-120030442","DOIUrl":"https://doi.org/10.1081/SIM-120030442","url":null,"abstract":"Abstract Mixed‐ligand complexes of Co(II), Ni(II), Cu(II), Zn(II), and Cd(II) with 5‐fluorocytosine (5FC) and guanine (G) have been prepared in aqueous ethanol solution at pH of about 7. The prepared complexes were characterized by various physico‐chemical methods viz. elemental analyses, infrared, UV‐visible, magnetic measurements, and powder x‐ray pattern. On the basis of IR studies, it is suggested that G acts as bidentate ligand coordinating through the N3 and N7 nitrogens whereas 5FC behaves as a monodentate and coordinates to the metal ions through the carbonyl oxygen only. These complexes were subjected to a screening system of Dalton's lymphoma (DL) tumor cells both in vivo and in vitro. Some complexes exhibit significant antitumor activity both in vivo and in vitro.","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":"3 1","pages":"573 - 591"},"PeriodicalIF":0.0,"publicationDate":"2004-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83531033","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}
Abstract Metal complexes of the types [M(HSB‐Cl)2benen] and [M(HSB‐Br)2benen] where M = Mn(II), Co(II), Ni(II), Cu(II), and Cd(II); HSB‐Cl = 5‐chlorosalicylidene‐p‐anisidine, HSB‐Br = 5‐bromosalicylidene‐p‐anisidine and benen = bis(benzylidene)ethylenediamine have been prepared and characterized on the basis of elemental analyses, magnetic susceptibility measurements, electronic and infrared spectra. An octahedral structure has been assigned to all of the prepared complexes. The complexes show higher antimicrobial activity against the Fasarium oxysporum (fungi), Salmonella typhi (bacteria), Saccharomyces cerevisiae (yeast), Lasiodiplodia theobromae (fungi) as compared to the ligands, metal salt, and control.
{"title":"Studies on Some Transition Metal Complexes with Bidentate Schiff Bases","authors":"P. P. Dholakiya, M. Patel","doi":"10.1081/SIM-120028307","DOIUrl":"https://doi.org/10.1081/SIM-120028307","url":null,"abstract":"Abstract Metal complexes of the types [M(HSB‐Cl)2benen] and [M(HSB‐Br)2benen] where M = Mn(II), Co(II), Ni(II), Cu(II), and Cd(II); HSB‐Cl = 5‐chlorosalicylidene‐p‐anisidine, HSB‐Br = 5‐bromosalicylidene‐p‐anisidine and benen = bis(benzylidene)ethylenediamine have been prepared and characterized on the basis of elemental analyses, magnetic susceptibility measurements, electronic and infrared spectra. An octahedral structure has been assigned to all of the prepared complexes. The complexes show higher antimicrobial activity against the Fasarium oxysporum (fungi), Salmonella typhi (bacteria), Saccharomyces cerevisiae (yeast), Lasiodiplodia theobromae (fungi) as compared to the ligands, metal salt, and control.","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":"1 1","pages":"371 - 382"},"PeriodicalIF":0.0,"publicationDate":"2004-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72964702","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}
Benlai Wu, Hong‐quan Zhang, Hong‐yun Zhang, Qing-An Wu, H. Hou, Yu Zhu, Xiang‐yu Wang
Abstract The polymeric complex [Ni(bpdc)(H2O)2] n (bpdc, 2,2′‐bipyridyl‐3,3′‐dicarboxylate dianion) which consist of [Ni(bpdc)(H2O)2] units was synthesized using a hydrothermal method. Its crystal structure was determined by x‐ray crystal diffraction as 1‐D chain‐like polymer. In [Ni(bpdc)(H2O)2] n , each bpdc bridges a Ni(II) pair in a unique tetradentate fashion through its two pyridine nitrogen atoms and two oxygen atoms of two carboxyl groups. Each Ni(II) cation has a slightly distorted octahedral coordination environment where the equatorial plane includes the two nitrogen atoms of one bpdc ligand and two oxygen atoms of another bpdc anion, while the axial positions are occupied by two oxygen atoms of two coordinated water molecules. In the polymeric complex the complicated hydrogen‐bonding network and π–π stacking interaction play an important role for its thermostability.
摘要采用水热法合成了由[Ni(bpdc)(H2O)2]单元组成的聚合物配合物[Ni(bpdc)(H2O)2] n (bpdc, 2,2′‐联吡啶基‐3,3′‐二羧酸二碘离子)。通过x射线晶体衍射测定其晶体结构为1 - D类链状聚合物。在[Ni(bpdc)(H2O)2] n中，每个bpdc通过其两个吡啶氮原子和两个羧基的两个氧原子以独特的四齿方式桥接Ni(II)对。每个Ni(II)阳离子具有轻微扭曲的八面体配位环境，其中赤道面包括一个bpdc配体的两个氮原子和另一个bpdc阴离子的两个氧原子，而轴向位置由两个配位水分子的两个氧原子占据。在聚合物配合物中，复杂的氢键网络和π -π堆积相互作用对其热稳定性起着重要作用。
{"title":"Hydrothermal Synthesis, Crystal Structure, and Properties of Nickel(II) Coordination Polymer with 2,2′‐Bipyridyl‐3,3′‐dicarboxylate","authors":"Benlai Wu, Hong‐quan Zhang, Hong‐yun Zhang, Qing-An Wu, H. Hou, Yu Zhu, Xiang‐yu Wang","doi":"10.1081/SIM-120028303","DOIUrl":"https://doi.org/10.1081/SIM-120028303","url":null,"abstract":"Abstract The polymeric complex [Ni(bpdc)(H2O)2] n (bpdc, 2,2′‐bipyridyl‐3,3′‐dicarboxylate dianion) which consist of [Ni(bpdc)(H2O)2] units was synthesized using a hydrothermal method. Its crystal structure was determined by x‐ray crystal diffraction as 1‐D chain‐like polymer. In [Ni(bpdc)(H2O)2] n , each bpdc bridges a Ni(II) pair in a unique tetradentate fashion through its two pyridine nitrogen atoms and two oxygen atoms of two carboxyl groups. Each Ni(II) cation has a slightly distorted octahedral coordination environment where the equatorial plane includes the two nitrogen atoms of one bpdc ligand and two oxygen atoms of another bpdc anion, while the axial positions are occupied by two oxygen atoms of two coordinated water molecules. In the polymeric complex the complicated hydrogen‐bonding network and π–π stacking interaction play an important role for its thermostability.","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":"150 1","pages":"313 - 321"},"PeriodicalIF":0.0,"publicationDate":"2004-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77375223","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}
Abstract Metal hydrazine pyridine‐2,n‐dicarboxylate hydrates [M(L)N2H4 · xH2O, where L = pyridine‐2,n‐dicarboxylate dianion and x = 1–3] of cobalt, nickel, zinc, and cadmium with quinolinic (n = 3), isocinchomeronic (n = 5), and dipicolinic (n = 6), and nickel and cadmium with lutidinic (n = 4) acids have been prepared and characterized by analytical, spectroscopic, thermal, and x‐ray powder diffraction studies. Electronic spectra and magnetic susceptibility measurements indicate that all the cobalt and nickel complexes are high‐spin octahedral in nature. The IR data document the existence of bidentate bridging hydrazine [ν(N–N) = 990–965 cm−1] and tridentate pyridinedicarboxylates in all the complexes. On heating they lose their hydrated water molecules in one or two steps. The anhydrous compounds undergo exothermic dehydrazination between 200 and 330 °C followed by decomposition of the organic component to give either the corresponding metal oxide or a mixture of metal oxide and metal carbonate as the final residue. The coordination of water has been substantiated by thermal analyses.
{"title":"Preparation, Characterization, and Thermal Reactivity of Divalent Transition Metal Hydrazine Pyridine‐2,n‐dicarboxylates (n = 3, 4, 5, and 6)","authors":"K. Saravanan, S. Govindarajan, D. Chellappa","doi":"10.1081/SIM-120028306","DOIUrl":"https://doi.org/10.1081/SIM-120028306","url":null,"abstract":"Abstract Metal hydrazine pyridine‐2,n‐dicarboxylate hydrates [M(L)N2H4 · xH2O, where L = pyridine‐2,n‐dicarboxylate dianion and x = 1–3] of cobalt, nickel, zinc, and cadmium with quinolinic (n = 3), isocinchomeronic (n = 5), and dipicolinic (n = 6), and nickel and cadmium with lutidinic (n = 4) acids have been prepared and characterized by analytical, spectroscopic, thermal, and x‐ray powder diffraction studies. Electronic spectra and magnetic susceptibility measurements indicate that all the cobalt and nickel complexes are high‐spin octahedral in nature. The IR data document the existence of bidentate bridging hydrazine [ν(N–N) = 990–965 cm−1] and tridentate pyridinedicarboxylates in all the complexes. On heating they lose their hydrated water molecules in one or two steps. The anhydrous compounds undergo exothermic dehydrazination between 200 and 330 °C followed by decomposition of the organic component to give either the corresponding metal oxide or a mixture of metal oxide and metal carbonate as the final residue. The coordination of water has been substantiated by thermal analyses.","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":"13 1","pages":"353 - 369"},"PeriodicalIF":0.0,"publicationDate":"2004-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75579172","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}
Abstract Six new mixed‐ligands complexes of oxovanadium(IV) of the general composition [VO(L1)(L2)(H2O)], where L1H = 4‐butyryl‐3‐methyl‐1‐phenyl‐2‐pyrazoline‐5‐one (bmppH), L2H = acetoacetanilide (aaH), o‐acetoacetotoluidide (o‐aatdH), o‐acetoacetanisidide (o‐aansH), methylacetoacetate (macacH), ethylacetoacetate (eacacH) or dibenzoylmethane (dbmH), have been synthesized by the interaction of these ligands with vanadyl sulfate pentahydrate. The complexes have been characterized and structures have been proposed for these complexes. The 3D molecular modeling and analysis have been carried out for one of the representative compounds.
{"title":"Oxovanadium(IV) Complexes Involving O,O‐Donor Environment of Bioinorganic and Medicinal Relevance","authors":"R. Maurya, H. Singh","doi":"10.1081/SIM-120028301","DOIUrl":"https://doi.org/10.1081/SIM-120028301","url":null,"abstract":"Abstract Six new mixed‐ligands complexes of oxovanadium(IV) of the general composition [VO(L1)(L2)(H2O)], where L1H = 4‐butyryl‐3‐methyl‐1‐phenyl‐2‐pyrazoline‐5‐one (bmppH), L2H = acetoacetanilide (aaH), o‐acetoacetotoluidide (o‐aatdH), o‐acetoacetanisidide (o‐aansH), methylacetoacetate (macacH), ethylacetoacetate (eacacH) or dibenzoylmethane (dbmH), have been synthesized by the interaction of these ligands with vanadyl sulfate pentahydrate. The complexes have been characterized and structures have been proposed for these complexes. The 3D molecular modeling and analysis have been carried out for one of the representative compounds.","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":"37 1","pages":"269 - 290"},"PeriodicalIF":0.0,"publicationDate":"2004-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74776262","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}
Abstract Mn(II), Fe(II), Co(II), Ni(II), Cu(II), and Zn(II) complexes of the type Na2[ML2] · 2H2O of the title ligand, monosodium 4‐(2‐pyridylazo)resorcinol, NaHL, have been synthesized and characterized by various physico‐chemical (elemental analyses, solubility, electrolytic conductances, and magnetic susceptibility measurements) and spectral (UV‐Visible, IR, ESR, and powder x‐ray diffraction) techniques for structure determination and tested for their antifungal activity. The 1:2 (M:L) complexes showed octahedral geometry around M(II), significant antifungal activity against Curvularia species and Collectotrichum capsici and moderate activity against the fungi Alternaria brassicicola, Alternaria brassicae, Alternaria solanae, Curvularia lunata, Helminthosporium oryzae, Aspergillus niger, Aspergillus flavus, and Fusarium udum.
{"title":"Synthesis, Characterization, Spectral Studies, and Antifungal Activity of Mn(II), Fe(II), Co(II), Ni(II), Cu(II), and Zn(II) Complexes with Monosodium 4‐(2‐Pyridylazo)resorcinol","authors":"G. Pandey, K. Narang","doi":"10.1081/SIM-120028302","DOIUrl":"https://doi.org/10.1081/SIM-120028302","url":null,"abstract":"Abstract Mn(II), Fe(II), Co(II), Ni(II), Cu(II), and Zn(II) complexes of the type Na2[ML2] · 2H2O of the title ligand, monosodium 4‐(2‐pyridylazo)resorcinol, NaHL, have been synthesized and characterized by various physico‐chemical (elemental analyses, solubility, electrolytic conductances, and magnetic susceptibility measurements) and spectral (UV‐Visible, IR, ESR, and powder x‐ray diffraction) techniques for structure determination and tested for their antifungal activity. The 1:2 (M:L) complexes showed octahedral geometry around M(II), significant antifungal activity against Curvularia species and Collectotrichum capsici and moderate activity against the fungi Alternaria brassicicola, Alternaria brassicae, Alternaria solanae, Curvularia lunata, Helminthosporium oryzae, Aspergillus niger, Aspergillus flavus, and Fusarium udum.","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":"26 1","pages":"291 - 311"},"PeriodicalIF":0.0,"publicationDate":"2004-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78376651","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}
Abstract Sodium perborate, a true peroxo salt, generates peracetic acid on standing in glacial acetic acid; the oxidations of N‐methylaniline and N,N‐dimethylaniline with fresh solutions of perborate are second order, but the specific oxidation rate of N‐methylaniline increases with [perborate]0. Sodium percarbonate, a dry carrier of hydrogen peroxide, does not generate peracetic acid in glacial acetic acid on aging, and the oxidations of the anilines are clean second order. On dissolution, perborate affords hydrogen peroxide and a borate, and the latter assists the oxidation of N‐methylaniline but not N,N‐dimethylaniline.
{"title":"Kinetic Evidence of Perborate Oxidation of N‐Methylaniline in Acetic Acid as Borate Assisted Hydrogen Peroxide Oxidation","authors":"C. Karunakaran, R. Kamalam","doi":"10.1081/SIM-120030439","DOIUrl":"https://doi.org/10.1081/SIM-120030439","url":null,"abstract":"Abstract Sodium perborate, a true peroxo salt, generates peracetic acid on standing in glacial acetic acid; the oxidations of N‐methylaniline and N,N‐dimethylaniline with fresh solutions of perborate are second order, but the specific oxidation rate of N‐methylaniline increases with [perborate]0. Sodium percarbonate, a dry carrier of hydrogen peroxide, does not generate peracetic acid in glacial acetic acid on aging, and the oxidations of the anilines are clean second order. On dissolution, perborate affords hydrogen peroxide and a borate, and the latter assists the oxidation of N‐methylaniline but not N,N‐dimethylaniline.","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":"507 1","pages":"541 - 551"},"PeriodicalIF":0.0,"publicationDate":"2004-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77841992","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}
Abstract Nickel(II) complexes of the Schiff base 2,3‐dimethyl‐4‐formyl‐(benzhydrazide)‐1‐phenyl‐3‐pyrazolin‐5‐one (L) with the formulae [Ni(L)2 (ClO4)]ClO4, [Ni(L)2(NO3)](NO3), and [Ni(L)2X2] (X = Cl, Br, or I) have been synthesized and characterized by elemental analyses, electrical conductance in nonaqueous solvents, infrared and electronic spectra as well as magnetic susceptibility measurements. In these complexes, L acts as a neutral bidentate ligand coordinating through the azomethine nitrogen and the carbonyl oxygen of the pyrazolone ring. In the perchlorate and nitrate complexes one of the anions is coordinated to the metal ion in a bidentate fashion while in the halide complexes both the anions are coordinated. An octahedral geometry is assigned around the nickel(II) ion in all these complexes.
{"title":"Complexes of Nickel(II) with 2,3‐Dimethyl‐4‐formyl(benzhydrazide)‐1‐phenyl‐3‐pyrazolin‐5‐one","authors":"K. Raju, P. Radhakrishnan","doi":"10.1081/SIM-120030430","DOIUrl":"https://doi.org/10.1081/SIM-120030430","url":null,"abstract":"Abstract Nickel(II) complexes of the Schiff base 2,3‐dimethyl‐4‐formyl‐(benzhydrazide)‐1‐phenyl‐3‐pyrazolin‐5‐one (L) with the formulae [Ni(L)2 (ClO4)]ClO4, [Ni(L)2(NO3)](NO3), and [Ni(L)2X2] (X = Cl, Br, or I) have been synthesized and characterized by elemental analyses, electrical conductance in nonaqueous solvents, infrared and electronic spectra as well as magnetic susceptibility measurements. In these complexes, L acts as a neutral bidentate ligand coordinating through the azomethine nitrogen and the carbonyl oxygen of the pyrazolone ring. In the perchlorate and nitrate complexes one of the anions is coordinated to the metal ion in a bidentate fashion while in the halide complexes both the anions are coordinated. An octahedral geometry is assigned around the nickel(II) ion in all these complexes.","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":"17 1","pages":"417 - 428"},"PeriodicalIF":0.0,"publicationDate":"2004-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86934410","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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