Greenacre, Victoria, Hector, Andrew L., Levason, William, Reid, Gillian, Smith, Danielle E. and Sutcliffe, Laura (2019) Complexes of WOCl4 and WSCl4 with neutral N- and O- donor ligands: synthesis, spectroscopy and structures. Polyhedron, 162, 14-19. (doi:10.1016/j.poly.2019.01.044).
Abstract
The complexes [WOCl4(L)] and [WSCl4(L)] (L = OPPh3, OPMe3, pyridine, 2,2’-bipyridyl), [{WOCl4}2(µ-L-L)] and [{WSCl4}2(µ-L-L)] (L-L = Ph2P(O)(CH2)nP(O)Ph2 (n = 1, 2)) have been prepared from WOCl4 or WSCl4 and the ligands in anhydrous CH2Cl2 solution, and characterised by microanalysis, IR and NMR (1H, 31P{1H}) spectroscopy. X-Ray crystal structures are reported for [WOCl4(OPPh3)], [{WOCl4}2(µ-Ph2P(O)(CH2)P(O)Ph2)] and [{WSCl4}2(µ-Ph2P(O)(CH2)2P(O)Ph2)]. All, except those of 2,2’-bipyridyl, are six-coordinate with the neutral donor trans to W=O or W=S. Spectroscopic data suggest that the [WOCl4(2,2’-bipy)] and [WSCl4(2,2’-bipy)] are seven-coordinate. Comparison of the structural and spectroscopic data for the two series of complexes indicate little difference in Lewis acidity between the two tungsten(VI) moieties. Decomposition of [WOCl4(OPMe3)] in solution gave the cyclic trimer [W3O3(µ-O)3Cl6(OPMe3)3], the structure of which revealed a six-membered W3O3 ring core with very asymmetric oxido-bridges. The structure of the tungsten(V) complex [WOCl3(2,2’-bipy)] is also reported.
More information
Identifiers
Catalogue record
Export record
Altmetrics
Contributors
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.