(η4-1,5-Cyclooctadiene)[(R)-(+)-5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-bis(diphenylphosphanyl)-1,1′-binaphthyl-κ2P,P′]rhodium(I) tetrafluoroborate 0.72-pentane 0.56-methanol solvate

Abstract

The title compound, [Rh(C8H12)(C44H20P2)]BF4·0.72C5H12·0.56·CH4O, crystallizes in the Sohncke space group P21. The RhI centre is coordinated by a H8-BINAP 5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-bis(diphenylphosphanyl)-1,1′-binaphthyl ligand and by a bidentate η2,η2-coordinated cod (cycloocta-1,5-diene) ligand. The asymmetric unit contains one cation, one anion and cocrystallized pentane [occupancy 0.720 (4)] and methanol [2 × 0.280 (4) occupancy] molecules. The rhodium(I) complex [Rh(H8-BINAP)(cod)]BF4 has been applied as a precatalyst in the asymmetric intramolecular [2+2+2] cycloaddition of enediynes, affording excellent enantiomeric excesses [Shibata et al. (2007). J. Org. Chem. 72, 6521–6525].

Keywords

• crystal structure
• rhodium complex
• hydrogenation