Synthesis and Characterization of Ruthenium Complexes Assembled with 1,1-Diphenyl-2-Propyn-1-Ol and o-Carborane Dichalcogenolato Ligands

Two novel complexes, ( p -cymene)Ru( E 2 C 2 B 10 H 9 )(Ph 2 C(OH)CCH 2 ), designated as I ( E  = S) and II ( E  = Se), are successfully synthesized and characterized using NMR, IR, MS, and elemental analysis techniques. X-ray structural analysis is performed on complex I , which crystallizes in monoclinic system, space group P 2 1 / c with a  = 11.6648(12) Å, b  = 16.9404(17) Å, c  = 15.6876(17) Å, β = 101.7490(10), C 27 H 36 B 10 ORuS 2 , M r  = 649.85, V  = 3035.0(5) Å 3 , D c  = 1.422 g/cm 3 , Z  = 4, F (000) = 1328, µ(Mo K α ) = 0.677 mm –1 , R  = 0.0505 and ω R  = 0.0793 for 3206 observed reflections ( I  > 2σ( I )). Structural analysis indicates the coordination of C=C bonds, formation of C–S bonds, and B-substitution at B3 within the o -carborane cage, resulting in the formation of a Ru–B bond. Furthermore, the ruthenium atom coordinated to p -cymene complies with the 18-electron rule.