WCl6, 1, reacted with two equivalents of HC (O) NR2 (R= Me, Et) in CH2Cl2 to afford the W (VI) oxo-derivatives WOCl4 (OCHNR2)(R= Me, 2a; R= Et, 2b) as main products. The hexachlorotungstate (V) salts [{OC–N (Me) CH2CH2CH2} 2 (μ-H)][WCl6], 3, and [PhNHC (Me) N (Ph) C (O) Me][WCl6], 4, were isolated in moderate yields from the 1: 2 molar reactions of 1 with N-methyl-2-pyrrolidone (in CH2Cl2) and acetanilide (in CDCl3), ...
