PROPERTIES AND CHARACTERIZATION OF VARIOUS SPECIES AND ISOMERIC FORMS ISOLATED FROM THE Cu(II)-NCO−-3,4,5-TRIMETHYLPYRAZOLE SYSTEM
作者： M. Hvastijová , J. Kohout , J. Ga[zcirc]o
DOI: 10.1080/00958978208075838
关键词: Esr spectra 、 Chelation 、 Crystallography 、 Chemistry 、 Stereochemistry 、 Characterization (materials science) 、 Ligand field theory 、 Infrared
摘要: Abstract From the Cu(II)-NCO−-3,4,5-trimethylpyrazole (tmpz) system three isomeric compounds of composition Cu(NCO)2.2tmpz and one compound Cu(NCO)2.tmpz were isolated. According to infrared data two 1 : consist Cu(tmpz.NCO)2 complexes, comprising 3,4,5-trimethyl-1-carbamoylpyrazolate anions as chelate ligands, while third represents cyanato complex Cu(NCO)2(tmpz)2. This type isomerism might be designated coligand isomersm. The exhibits terminally bonded well bridging NCO ligands. ligand field spectra indicate that shows a square-planar configuration second differs by axial interactions between basic structure units. Cu(NCO)2(tmpz)2 molecular pseudotetrahedral Cu(NCO)2(tmpz) has also but polymeric structure. g values from ESR strongly support above conclusions.
sci-hub.se 参考文章(17)
M. Quastlerová-Hvastijová, J. Kohout, J. Gažo, F. Valach, Cyanato-copper(II) complexes with organic ligands—XIII[1]: Isomerism with dicyanato-bis(2,4-lutidine)-copper(II) Journal of Inorganic and Nuclear Chemistry. ,vol. 38, pp. 705- 709 ,(1976) , 10.1016/0022-1902(76)80341-7
P. C. Chia, D. P. Freyberg, G. M. Mockler, E. Sinn, Synthesis and Properties of Bis[N-R-(5-chloro-α-phenyl-2-hydroxybenzylidene)aminato]copper(II) Complexes and Crystal and Molecular Structures of the Derivatives with R = N-butyl and R = Isobutyl (two Structural Isomers) Inorganic Chemistry. ,vol. 16, pp. 254- 264 ,(1977) , 10.1021/IC50168A008
J. Kohout, M. Liska, M. Hvastijova, Physical properties and structure of potassium tricyanatocuprate(II) Inorganica Chimica Acta. ,vol. 25, pp. L71- L73 ,(1977) , 10.1016/S0020-1693(00)95650-0
J. Reedijk, Pyrazoles and imidazoles as ligands. Part V : Infrared and Raman spectra of 3(5)-methylpyrazole coordinated to metal(II) ions Recueil des Travaux Chimiques des Pays-Bas. ,vol. 90, pp. 117- 136 ,(2010) , 10.1002/RECL.19710900202
J. Kohout, M. Hvastijová, J. Gažo, Cyanato--copper(II) complexes with nitrogen organic ligands: preparation, properties and structure Coordination Chemistry Reviews. ,vol. 27, pp. 141- 172 ,(1978) , 10.1016/S0010-8545(00)80357-4
Jiří Kohout, Mária Kabešová, Mária Hvastijová, Ján Gažo, Infrared study of the mutual influence of ligands in copper(II) pseudohalide complexes of the type Cu(NCX) 2 L 2 with mono- and dimethylpyridines Collection of Czechoslovak Chemical Communications. ,vol. 43, pp. 379- 386 ,(1978) , 10.1135/CCCC19780379
B.J. Hathaway, D.E. Billing, The electronic properties and stereochemistry of mono-nuclear complexes of the copper(II) ion Coordination Chemistry Reviews. ,vol. 5, pp. 143- 207 ,(1970) , 10.1016/S0010-8545(00)80135-6
Fedor Valach, Jiří Kohout, Michal Dunaj-Jurčo, Mária Hvastijová, Ján Gažo, Formation of a new ligand by addition of 3,5-dimethylpyrazole to the cyanate group in a copper(II) complex: crystal and molecular structure of α-bis(1-carbamoyl-3,5-dimethylpyrazolato)copper(II) and the physical properties of two isomeric forms J. Chem. Soc., Dalton Trans.. pp. 1867- 1871 ,(1979) , 10.1039/DT9790001867
Jiří Kohout, Fedor Valach, Mária Hvastijová, Michal Dunaj-Jurčo, Ján Gažo, X-Ray and infrared evidence of new ligand formation by addition of 3,5-dimethylpyrazole of the cynate group in a copper(II) complex J. Chem. Soc., Chem. Commun.. ,vol. 0, pp. 903- 904 ,(1976) , 10.1039/C39760000903
I. M. Procter, B. J. Hathaway, P. Nicholls, The electronic properties and stereochemistry of the copper(II) ion. Part I. Bis(ethylenediamine)copper(II) complexes Journal of the Chemical Society A: Inorganic, Physical, Theoretical. pp. 1678- 1684 ,(1968) , 10.1039/J19680001678