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Vanadium(IV and V) Complexes Containing SNO (Dithiocarbonylhydrazone; Thiosemicarbazone) Donor Sets
Author(s) -
Wang Dongren,
Ebel Martin,
Schulzke Carola,
Grüning Cerstin,
Hazari Saroj K. S.,
Rehder Dieter
Publication year - 2001
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/1099-0682(200104)2001:4<935::aid-ejic935>3.0.co;2-j
Subject(s) - chemistry , electron paramagnetic resonance , salicylaldehyde , octahedron , vanadium , crystallography , square pyramid , stereochemistry , coordination complex , medicinal chemistry , crystal structure , inorganic chemistry , metal , organic chemistry , nuclear magnetic resonance , schiff base , physics
The VO 2+ complexes [VOCl( ONS )] ( 3 ) and [VO( ONS )′] ( 4 ), and the VO 3+ complexes [VO(OEt)( ONS )′] ( 5 ) { ONS = ( R )‐salicylaldehyde thiosemicarbazonate(1−) R = 5,6‐C 4 H 4 ( 3a ) or 3‐OMe ( 3b ); ( ONS )′ = ( R )‐salicylaldehyde[benzylmercaptothiocarbonylhydrazonate(2−)], R = H, ( 4a/5a ) or 3‐OMe ( 4b/5b )} have been prepared and characterised by IR, EPR, 1 H‐, and 51 V‐NMR spectroscopy. In ( S )‐ s BuOH, 4a converts to [VO{( S )‐O s Bu}( ONS )′] ( 5c ) and [VO(OH)( ONS )′] (or a condensation product thereof). Solutions of 5c show three 51 V NMR signals, two of which are due to two diastereomers. The EPR spectra of 3 and 4 in THF reveal the presence of octahedral species in solution. The crystal and molecular structures of complexes 3a· OCMe 2 , 5a , and 5b have been obtained, revealing basically a tetragonal pyramid, and coordination of the sulfur function in the thiocarbonyl ( 3 ) or enethiolate mode ( 5 ). The relevance of the compounds to bioinorganic aspects is addressed.