Crystal structure of a dinuclear ruthenium(II) complex with a bent CO22- bridge.

ABSTRACT: The mol-ecular and crystal structures of a CO22--bridged dinuclear ruthenium complex is reported, namely, ?-carbonito-?2C:O-bis-[bis(2,2'-bi-pyridine-?2N,N')carbon-ylruthenium(II)] bis-(hexa-fluorido-phosphate)-aceto-nitrile-diethyl ether (1/1/0.5), [Ru2(CO)2(C10H8N2)4(?:?2-C:O-CO2)](PF6)2·CH3CN·0.5C4H10O. The complex cation in the title compound consists of two {Ru(CO)(bpy)2}2+ units (bpy = 2,2'-bi-pyridine) singly bridged by a ?:?2-C:O carbonite anion, resulting in an unsymmetrical dinuclear structure. Some of the inter-atomic C?O distances involving the carbonyl ligands are shorter than the sum of the van der Waals radii. There are intra-molecular C-H?O and aromatic ?-? contacts in the cationic complex. In the crystal, the cations are linked by pairs of C-H?F hydrogen bonds in addition to weak C-H?F inter-actions between the solvent mol-ecules and PF6- counter-anions. The equatorial F atoms of one of the PF6- anions are disordered over two sets of sites with an occupancy ratio of 0.908?(7):0.092?(7) while the central O atom of the diethyl ether solvent mol-ecule is disordered over an inversion centre.

SUBMITTER: Takase T 

PROVIDER: S-EPMC6072990 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature