title: Bis[μ-1,2-bis-(diphenyl-phosphino)methane-κP:P']bis-[(η-ethene)nickel(0)] toluene disolvate.
abstract: In the title compound, [Ni(2)(C(2)H(4))(2)(C(25)H(22)P(2))(2)]·2C(7)H(8), each Ni atom is coordinated in a trigonal-planar geometry by two P atoms of the bridging 1,2-bis-(diphenyl-phosphino)methane (dppm) ligands and by the centroid of the double bond of an ethene ligand. An eight-membered ring comprising the two Ni atoms, four P atoms and the CH(2) groups of the two dppm ligands is thus formed. The methyl group in one of the solvent toluene mol-ecules is disordered over two positions with equal occupancies.
authors.affiliation: Friedrich-Schiller-Universität Jena, Institut für Anorganische und Analytische Chemie, August-Bebel-Strasse 2, D-07743 Jena, Germany.
authors.forename: Jens
authors.initials: J
authors.lastname: Langer
authors.forename: Reinhald
authors.initials: R
authors.lastname: Fischer
authors.forename: Helmar
authors.initials: H
authors.lastname: Görls
authors.forename: Dirk
authors.initials: D
authors.lastname: Walther