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A non‐oxo methanolate‐bridged divanadium(IV) complex with tris(2‐sulfanidylphenyl)phosphane ligands: synthesis, structural characterization and magnetic investigation
Author(s) -
Wu Hong-Ming,
Chang Ya-Ho,
Su Chia-Lin,
Lee Gene-Hsiang,
Hsu Hua-Fen
Publication year - 2016
Publication title -
acta crystallographica section c
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 17
ISSN - 2053-2296
DOI - 10.1107/s2053229616005222
Subject(s) - tris , chemistry , characterization (materials science) , stereochemistry , combinatorial chemistry , materials science , nanotechnology , biochemistry
Vanadium chemistry is of interest due its biological relevance and medical applications. In particular, the interactions of high‐valent vanadium ions with sulfur‐containing biologically important molecules, such as cysteine and glutathione, might be related to the redox conversion of vanadium in ascidians, the function of amavadin (a vanadium‐containing anion) and the antidiabetic behaviour of vanadium compounds. A mechanistic understanding of these aspects is important. In an effort to investigate high‐valent vanadium–sulfur chemistry, we have synthesized and characterized the non‐oxo divanadium(IV) complex salt tetraphenylphosphonium tri‐μ‐methanolato‐κ 6 O : O ‐bis({tris[2‐sulfanidyl‐3‐(trimethylsilyl)phenyl]phosphane‐κ 4 P , S , S ′, S ′′}vanadium(IV)) methanol disolvate, (C 24 H 20 P)[V IV 2 (μ‐OCH 3 ) 3 (C 27 H 36 PS 3 ) 2 ]·2CH 3 OH. Two V IV metal centres are bridged by three methanolate ligands, giving a C 2‐symmetric V 2 (μ‐OMe) 3 core structure. Each V IV centre adopts a monocapped trigonal antiprismatic geometry, with the P atom situated in the capping position and the three S atoms and three O atoms forming two triangular faces of the trigonal antiprism. The magnetic data indicate a paramagnetic nature of the salt, with an S = 1 spin state.