1-CARBONYL-MU-CARBOXYLATO-1-KAPPA-C2-KAPPA-O2-KAPPA-O'-1-ETA(5)-INDENYL-2,2,2-TRIPHENYL-1-(TRIPHENYLPHOSPHINE)IRONTIN

[FeSn(C6H5)3(C9H7)(CO)(CO2){P(C6H5)3}], M(r) = 855.33, monoclinic, P2(1)/n, a = 17.715(5), b = 13.156(4), c = 17.749(5) angstrom, beta = 112.22 (3)degrees, V = 3829.2 angstrom3, Z = 4, D(x) = 1.48 g cm-3, Mo Kalpha (lambda = 0.71073 angstrom), mu = 11.1 cm-1, F(000) = 1736, T = 296 K, 7057 unique reflections, R = 0.027, wR = 0.031 for 5480 observed reflections with I > 3sigma(I). The coordination environment about the Fe atom consists of a triphenylphosphine, the five-membered ring of the indenyl ligand, a carbonyl and a C-bound carboxylate. A triphenyltin unit is bound to the O atoms of the carboxylate group giving a bimetallic complex. The Sn-O bond lengths differ by 0.467 angstrom which is considerably more than the difference observed for the related cyclopentadienyl analog; the steric demands of the bulky indenyl ligand are responsible for this difference. The geometry about the Sn atom is best described as a distorted trigonal bipyramid.