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. 2014 Jan 31;70(Pt 2):m71-2.
doi: 10.1107/S1600536814001135. eCollection 2014 Feb 1.

μ-3,3'-Diisopropyl-1,1'-(propane-1,3-di-yl)bis-(1,3-diazinan-2-yl-idene)]bis-[bromido-(η(4)-cyclo-octa-1,5-diene)rhodium(I)

Gajanan Manohar Pawar  1 , Klaus Wurst  2 , Dongren Wang  1 , Michael Buchmeiser  1
Affiliations

μ-3,3'-Diisopropyl-1,1'-(propane-1,3-di-yl)bis-(1,3-diazinan-2-yl-idene)]bis-[bromido-(η(4)-cyclo-octa-1,5-diene)rhodium(I)

Gajanan Manohar Pawar et al. Acta Crystallogr Sect E Struct Rep Online. .

Abstract

The title compound, [Rh2Br2(C8H12)2(C17H32N4)], was obtained by the reaction of 3,3'-(propane-1,3-di-yl)bis-(1-isopropyl-3,4,5,6-tetra-hydro-pyrimidin-1-ium) bromide and [{Rh(cod)Cl}2] (cod is cyclo-octa-1,5-diene) in tetra-hydro-furan. The two Rh(I) atoms each have a distorted square-planar coordination environment, defined by a bidentate cod ligand, a bromide anion and one C atom of the bridging bidentate bis-N-heterocyclcic carbene (NHC) ligand. The average Rh-CNHC distance is 2.038 (7) Å, suggesting that the bond has a major σ contribution with very little back donation. The distances between the cod ligands and the Rh(I) atoms vary between 2.104 (4) and 2.210 (4) Å.

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Figures

Fig. 1.
Fig. 1.
Molecular structure of the title molecule with displacement ellipsoids drawn at the 30% probability level.
See this image and copyright information in PMC

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