SYNTHESIS AND CHARACTERIZATION OF A PHOSPHAALKYNE-BRIDGED PENTAIRON CARBONYL CLUSTER - CRYSTAL AND MOLECULAR-STRUCTURE OF [(FE3SE2(CO)(8))(MU-PCBU(T))(FE2SE(CO)(6))]
P. Mathur et al., SYNTHESIS AND CHARACTERIZATION OF A PHOSPHAALKYNE-BRIDGED PENTAIRON CARBONYL CLUSTER - CRYSTAL AND MOLECULAR-STRUCTURE OF [(FE3SE2(CO)(8))(MU-PCBU(T))(FE2SE(CO)(6))], Organometallics, 14(6), 1995, pp. 3101-3103
The new cluster [{Fe3Se2(CO)8(})(mu-PCBu(t)){Fe2Se(CO)(6)}] has been i
solated in moderate yield from the photolytic reaction of [Fe-2(CO)(6)
(mu-Se-2] and the phosphaalkyne P=CBUt. Its structure has been establi
shed by single crystal X-ray diffraction methods: monoclinic, P2(1)/c
(No. 14), a = 9.378(1) Angstrom, b = 17.605(3) Angstrom, c = 18.631(2)
Angstrom, beta = 93.00(1)degrees, V = 3071.7 Angstrom(3) Z = 4, R = 7
.6%, R' = 6.5%. The structure consists of a [Fe3Se2(CO)(8)] unit and a
[Fe2Se(CO)(6)(PCBu(t))] unit linked by the phosphorus lone pair elect
rons of the phosphaalkyne.