Halocuprates(I) crystallising with the Ph3PNPPh3 + cation: preparation and structural characterisation of (Ph3PNPPh3)2[Cu4Br6] and (Ph3PNPPh3)[CuBrCl]
Artikel i vetenskaplig tidskrift, 2002

Two halocuprates(I) crystallising with the Ph3PNPPh3+ cation, (Ph3PNPPh3)(2)[Cu4Br6] (1) and (Ph3PNPPh3)[CuBrCl] (2), have been prepared and characterised by means of crystal-structure determination. The anion in 1 is a tetranuclear species composed of vertex-sharing copper(I)-bromide triangles. It may, alternatively, be described in terms of an octahedron of bromide ions containing a tetrahedron of copper(l) ions, There are two possible orientations of the copper(l) tetrahedron which results in partial occupancy of the crystallographic copper(l) sites. The anion in 2 is also disordered with bromide and chloride occupying the halide sites to differing degrees, resulting in the composition [CuBr1.46Cl0.54](-). In both compounds the Ph3PNPPh3+ cation exhibits an intramolecular claw-like conformation with offset face-to-face orientation of two phenyl rings but the orientation of the cation claws with respect to the anion differs considerably between the two compounds.

chlorocuprate(I)

bis(triphenylphosphoranylidene)ammonium

halide

bromocuprate(I)

copper(I)

crystal packing

Författare

Catrin Hasselgren

Institutionen för oorganisk kemi

Susan Elisabeth Jagner

Institutionen för oorganisk kemi

Chalmers, Institutionen för material- och ytkemi, Oorganisk kemi

Inorganica Chimica Acta

0020-1693 (ISSN)

Vol. 336 137-141

Ämneskategorier

Kemi

DOI

10.1016/S0020-1693(02)00848-4