New class of ruthenium sulfide clusters: Ru(4)S(6)(PPh(3))(4), Ru(5)S(6)(PPh(3))(5), and Ru(6)S(8)(PPh(3))(6).
Reaction of RuCl(2)(PPh(3))(3) with S(2)(-) sources yields a family of phosphine-containing Ru-S clusters which have been characterized crystallographically and by MALDI-MS. Ru(4)S(6)(PPh(3))(4) (Ru-Ru(av) = 2.94 A) has idealized T(d)() symmetry whereas Ru(6)S(8)(PPh(3))(6) (Ru-Ru(av) = 2.82 A) adopts the idealized O(h)() symmetry characteristic of Chevrel clusters. Ru(5)S(6)(PPh(3))(5) is formally derived by the addition of Ru(PPh(3)) to one face of Ru(4)S(6)(PPh(3))(4). In terms of its M-S connectivity, the Ru(5)S(6) cluster resembles a fragment of the FeMo cluster in nitrogenase.
Eckermann
Amanda L
AL
Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.
Wunder
Markus
M
Fenske
Dieter
D
Rauchfuss
Thomas B
TB
Wilson
Scott R
SR