Mr. Churchill et al., SYNTHESIS AND CRYSTAL-STRUCTURE OF A DINUCLEAR ORGANOMETALLIC PHOSPHONIUM YLID COMPLEX, )(2)FE-2(CO)(2)(MU-CO)(MU-CHP(C6H5)(3))(-]()][PF6), Journal of chemical crystallography, 26(10), 1996, pp. 683-690
The title compound crystallizes in the centrosymmetric monoclinic spac
e group P2(1)/n with Z=4. The cation consists of two (eta(5)-C5H5)Fe(C
O) units which are linked via a metal-metal bond (Fe(1)-Fe(2)=2.530(1)
Angstrom), a bridging carbonyl ligand (Fe(1)-C(4)=1.912(8) Angstrom,
Fe(2)-C(4)=1.940(9) Angstrom) and a bridging phosphonium ylid ligand (
Fe(1)-C(1)=1.991(6)Angstrom, Fe(2)-C(1)=1.985(6) Angstrom and C(1)-P(1
)=1.781(6) Angstrom).