D. Miguel et al., The influence of nitrosyl and allyl ligands on the formation of metal-metal bonds in bimetallic complexes containing S2CPCy3 bridges, INORG CHIM, 307(1-2), 2000, pp. 20-25
The reactions of the anion [X(CO)(2)Mo(mu-S2CPCy3)Mo(CO)(3)](-) (X = NO, et
a(3)-C3H5) with Ph2PCl afforded the products [(ON)(CO)(2)Mo(mu-PPh2)(mu-S2C
PCy3)Mo(CO)(3)] (3) and [(eta(3)-C3H5)(CO)Mo(mu-PPh2)(mu-S2CPCy3)Mo(CO)(3)]
(4), respectively. The chemical shifts of the resulting mu-PPh2 ligands in
the P-31{H-1} NMR spectra indicate that the two molybdenum atoms are not b
onded in 3, but are directly bonded in 4. The selenido-bridged binuclear co
mplexes [X(CO)(2)Mo(mu-SePh)(mu-S2CPCy3)M(CO)(3)] (X = NO, M = Mo, 5a; M =
W, 5b; X = eta(3)-C3H5, M = Mo, 6a; M = W, 6b) were synthesized by the reac
tions of the corresponding anions [X(CO)(2)Mo(mu-S2CPCy3)MCO)(3)](-) with P
hSeI. The influence of the nitrosyl and allyl ligands on the formation of m
etal-metal and metal-carbon bonds in bimetallic complexes containing both S
2CPCy3 and PPh2 bridges is discussed. (C) 2000 Elsevier Science S.A. All ri
ghts reserved.