Synthese und Kristallstruktur des Phosphaniminatokomplexes [MoCl₄(NPPh₃)(Pyridin)] · CH₂Cl₂/ Synthesis and Crystal Structure of the Phosphaneiminato Complex [MoCl₄(NPPh₃)(pyridine)] · CH₂Cl₂

Abstract

<jats:title>Abstract</jats:title><jats:p>[MoCl<jats:sub>4</jats:sub>(NPPh<jats:sub>3</jats:sub>)(pyridine)] · CH<jats:sub>2</jats:sub>Cl<jats:sub>2</jats:sub> is formed by the reaction of the cyclothiazeno complex [MoCl<jats:sub>3</jats:sub>(N<jats:sub>3</jats:sub>S<jats:sub>2</jats:sub>) · (pyridine)] with triphenylphosphane in CH<jats:sub>2</jats:sub>Cl<jats:sub>2</jats:sub> solution. It forms red, moisture sensitive needles. [MoCl<jats:sub>4</jats:sub>(NPPh<jats:sub>3</jats:sub>)(C<jats:sub>5</jats:sub>H<jats:sub>5</jats:sub>N)] · CH<jats:sub>2</jats:sub>Cl<jats:sub>2</jats:sub> crystallizes monoclinically in the space group P2<jats:sub>1</jats:sub>/n with four formula units per unit cell (1934 independent observed reflexions. R = 0.057). The cell dimensions are a = 1165, b = 1473, c = 1696 pm; β = 107.82°. The Mo atom is coordinated by four chlorine atoms, by the N atom of the (NPPh<jats:sub>3</jats:sub><jats:sup>-</jats:sup>) ligand, and in trans-position to it by the N atom of the pyridine molecule. The Mo= N = PPh<jats:sub>3</jats:sub> group has a nearly linear MoNP axis (176.6°) with bond lengths of MoN = 172 pm and PN = 165 pm.</jats:p>