title: Insight into the Reaction of a Dinuclear Phosphinidene Complex with Nitriles.
abstract: The phosphinidene complex [Cp*P{W(CO)5}2] (1; Cp*=C5 Me5 ) reacted with malononitrile to give the 1,2-dihydro-1,3,2-diazaphosphinine derivative 2. The reaction of 1 with 1,4-benzodinitrile gave [1,4-{{W(CO)5}2 P-N=C(Cp*)}2 (C6 H4)] (3), the first example of a cumulene-like aminophosphinidene complex. The reaction of 1 with aniline gave the aminophosphinidene complex [(Ph)N(H)P{W(CO)5}2] (4). To compare the reactivity of benzonitrile and aniline with 1, the phosphinidene complex 1 was reacted with three different isomers of aminobenzonitrile (2-, 3-, and 4-aminobenzonitrile). These reactions gave an insight into the reaction pathway of 1 with benzonitrile derivatives. Compounds 5, 6 a, 6 b, and 7, which are derivatives of 1,2-dihydro-1,3,2-diazaphosphinine or benzo-2H-1,2-azaphospholes, were, as well as all other products, characterized by mass spectrometry, NMR and IR spectroscopy, and X-ray structure analysis.
authors.affiliation: Institut für Anorganische Chemie der Universität Regensburg, 93040, Regensburg, Germany.
authors.forename: Michael
authors.initials: M
authors.lastname: Seidl
authors.affiliation: Institut für Anorganische Chemie der Universität Regensburg, 93040, Regensburg, Germany.
authors.forename: Rudolf
authors.initials: R
authors.lastname: Weinzierl
authors.affiliation: Institute of Chemistry, St. Petersburg State University, 7/9 Universitetskaya nab., 199034, St. Petersburg, Russia.
authors.forename: Alexey Y
authors.initials: AY
authors.lastname: Timoshkin
authors.affiliation: Institut für Anorganische Chemie der Universität Regensburg, 93040, Regensburg, Germany. manfred.scheer@ur.de.
authors.forename: Manfred
authors.initials: M
authors.lastname: Scheer
keywords: heterocycles; nitriles; phosphinidenes; phosphorus