Monomeric Molybdenum and Tungsten Complexes That Contain a Metal–Phosphorus Triple Bond

Abstract

The chloro complex [(N3N)WCl] and the phosphanide LiPPhH react to give the complex [(N3N)WP] with a terminal phosphido (P3−) ligand (shown on the right). The WP bond length in monomeric [(N3N)WP] is 2.162(4) Å, virtually the same as the Ta–P bond length (2.145(7) Å) in [(N3N)Ta = P(cyclohexyl)]. N3N = (Me3SiNCH2CH2)3N.