Collect. Czech. Chem. Commun. 2010, 75, 1051-1060
Published online 2010-10-05 08:04:13

Metal complexes of an amine bisphenol with a thiophene side-arm

Eero Salminena, Reijo Sillanpääb and Ari Lehtonena,*

a Laboratory of Materials Chemistry and Chemical Analysis, Department of Chemistry, University of Turku, FI-20014 Turku, Finland
b Laboratory of Inorganic Chemistry, Department of Chemistry, University of Jyväskylä, FI-40351 Jyväskylä, Finland


Dioxomolybdenum(VI) and oxotungsten(VI) complexes with a new amine bisphenol ligand (H2L) are reported. The ligand which carries a neutral nitrogen atom, two phenolic oxygen atoms and a thiophene side-arm was synthesized by a simple one-pot Mannich reaction. Further reaction with [MoO2(acac)2] yielded a monomeric molybdenum complex [MoO2(L)(MeOH)] (2a) or a dimeric complex [Mo2O2(μ-O)2(L)2] (2b), depending on the reaction conditions. The reaction with a tungsten trisglycolate [W(eg)3] led to the formation of a monomeric compound [WO(eg)(L)] (3). In these complexes, the potentially tetradentate amine bisphenolate dianion coordinates as a tridentate O,N,O donor while the sulfur side-arm donor remains intact. The solid-state structure of 2a was investigated by X-ray crystallography.

Keywords: Tungsten; Molybdenum; Phenolate ligands.

References: 30 live references.