Isocarbonyl complexes of divalent samarium and ytterbium. The molecular structures of [{Ln(Tp(tBu,Me))(THF)(mu-CO)(2)Mo-(eta-C5H4Me)(CO)}(2)] (Ln = Sm, Yb)
Ac. Hillier et al., Isocarbonyl complexes of divalent samarium and ytterbium. The molecular structures of [{Ln(Tp(tBu,Me))(THF)(mu-CO)(2)Mo-(eta-C5H4Me)(CO)}(2)] (Ln = Sm, Yb), J CHEM S DA, (22), 1998, pp. 3871-3874
Citations number
25
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS
The reaction of [Ln(Tp(tBu,Me))I(THF)] (1a Ln = Sm, 1b Ln = Yb) with Na[Mo(
eta-C5H4Me)(CO)(3)] gives good yields of [{Ln(Tp(tBu,Me))(THF)(mu-CO)(2)Mo(
eta-C5H4Me)(CO)(3)}(2)], 2a (Ln = Sm), 2b (Ln = Yb). The low temperature X-
ray crystal structures of 2a and 2b have been determined. The structures co
ntain a 12-membered ring of samarium/ytterbium and molybdenum atoms with is
ocarbonyl groups linking the metal centres. 2a represents the first example
of an isocarbonyl bound to samarium(II). Addition of pyridine results in t
he breakup of the tetramer to give [{Ln(Tp(tBu,Me))(py)(n)(mu-CO)Mo(eta-C5H
4Me)(CO)(2)}(2)].