|
|||||
|
|
Synthesis and structural studies on di-oxovanadium(V) complexes of N(4)-substituted pyrazole based thiosemicarbazones |
|
| Authors: | Arijit Hazra Anil Kumar Barik Sachindranath Pal Samik Gupta Somnath Roy Ray J. Butcher Shie-Ming Peng G.H. Lee Susanta Kumar Kar |
| Affiliation: | 1. Department of Chemistry, University College of Science, 92, Acharya Prafulla Chandra Road, Calcutta 700 009, West Bengal, India;2. Department of Chemistry, St. Paul’s C.M. College, 33/1, Raja Rammohan Roy Sarani, Calcutta 700 009, India;3. Department of Chemistry, Sree Chaitanya College, Habra, North 24 Parganas, West Bengal, India;4. Department of Chemistry, Howard University, 2400 Sixth Street, N.W., Washington, DC 200 59, USA;5. Department of Chemistry, National Taiwan University, Taipei 106, Taiwan, ROC |
| Abstract: | Three mononuclear cis-dioxovanadium(V) complexes of tridentate thiosemicarbazones derived from 5-methyl-3-formylpyrazole (MPA) and N(4)-methyl/ethyl/dimethyl thiosemicarbazide have been synthesized and characterized. Single crystal X-ray analyses were performed with [VO2L1] (1), [VO2L2] (2) and [VO2L3] (3), where L1, L2 and L3 denote the [1 + 1] thiosemicarbazone mono-anions derived from MPA and N(4)-substituted methyl/ethyl/dimethyl thiosemicarbazide respectively. In all the complexes the vanadium atom is in a distorted square pyramidal geometry with a N2SO2 chromophore. The interesting finding in the work is that in complexes 1 and 2, the thioimine nitrogen unusually participates in coordination whereas in 3 it is the azomethine nitrogen (quite usual) which is involved in the coordination process. |
| Keywords: | Vanadium(V) Spectral properties Crystal structure Co-crystals 5-Methyl-3-formyl-N(4)-methyl/ethyl/dimethyl thiosemicarbazones |
| 本文献已被 ScienceDirect 等数据库收录！ | |