Crystal structure of tricarbon-yl(N-di-phenyl-phosphanyl-N,N'-diisopropyl-P-phenyl-phospho-nous di-amide-κ(2) P,P')cobalt(I) tetra-carbonyl-cobaltate(-I) toluene 0.25-solvate

Laura Dura; Anke Spannenberg; Torsten Beweries

doi:10.1107/S1600536814024908

Crystal structure of tricarbon-yl(N-di-phenyl-phosphanyl-N,N'-diisopropyl-P-phenyl-phospho-nous di-amide-κ(2) P,P')cobalt(I) tetra-carbonyl-cobaltate(-I) toluene 0.25-solvate

Acta Crystallogr Sect E Struct Rep Online. 2014 Nov 19;70(Pt 12):533-5. doi: 10.1107/S1600536814024908. eCollection 2014 Dec 1.

Authors

Laura Dura¹, Anke Spannenberg¹, Torsten Beweries¹

Affiliation

¹ Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock, Germany.

Abstract

The asymmetric unit of the title compound, [Co(C24H30N2P2)(CO)3][Co(CO)4]·0.25C7H8, consists of two crystallographically independent cations with similar conformations, two anions, and one-half of a toluene mol-ecule disordered about an inversion centre. In the cations, a Co/P/N/P four-membered slightly bent metallacycle is the key structural element. The pendant NH group is not coordinated to the Co(I) atom, which displays a distorted trigonal-bipyramidal coordination geometry. Weak inter-ionic hydrogen bonds are observed between the NH groups and a carbonyl group of the tetrahedral [Co(CO)4](-) anions.

Keywords: cobalt; crystal structure; metallacycle; phosphine ligand.