Crystal structure of [(1,2,3,4,11,12-?)-anthracene]tris-(tri-methyl-stann-yl)cobalt(III).

ABSTRACT: The asymmetric unit of the title structure, [Co(?(6)-C14H10){Sn(CH3)3}3], contains two independent mol-ecules. Each anthracene ligand is ?(6)-coordinating to a Co(III) cation and is nearly planar [fold angles of 5.4?(3) and 9.7?(3)°], as would be expected for its behaving almost entirely as a donor to a high-oxidation-state metal center. The slight fold in each anthracene ligand gives rise to slightly longer Co-C bond lengths to the ring junction carbon atoms than to the other four. Each Co(III) cation is further coordinated by three Sn(CH3)3 ligands, giving each mol-ecule a three-legged piano-stool geometry. In each of the two independent mol-ecules, the trio of SnMe3 ligands are modeled as disordered over two positions, rotated by approximately 30%, such that the C atoms nearly overlap. In one mol-ecule, the disorder ratio refined to 0.9365?(8):0.0635?(8), while that for the other refined to 0.9686?(8):0.0314?(8). The mol-ecules are well separated, and thus no significant inter-molecular inter-actions are observed. The compound is of inter-est as the first structure report of an ?(6)-anthracene cobalt(III) complex.

SUBMITTER: Brennessel WW 

PROVIDER: S-EPMC4257331 | biostudies-literature | 2014 Nov

REPOSITORIES: biostudies-literature