497845-98-4Relevant academic research and scientific papers
η1-Pbasal Coordination of P4X3 (X = S, Se) Molecules toward 16e Ruthenium Fragments
Vaira, Massimo Di,Rios, Isaac de los,Mani, Fabrizio,Peruzzini, Maurizio,Stoppioni, Piero
, p. 293 - 300 (2007/10/03)
Ruthenium(II) pentamethylcyclopentadienyl complexes [Ru(η5-C5Me5)Cl(L-L)] [L-L = 1,2-bis(diphenylphosphanyl)ethane, dppe (1), bis(diphenylphosphanyl)methane, dppm, cis-1,2-bis(diphenylphosphanyl)ethylene, dppet, and (1-diphenylarsanyl-2-diphenylphosphanyl)ethane, dpadppe] treated with a stoichiometric amount of P4X3 (X = S, Se) in THF have yielded the compounds [Ru(η5-C5Me5)(L-L)(P4X3)]BPh4 (X = S, Se). In the P4Se3 derivatives the heptatomic cage is bound to the metal through a basal phosphorus atom. The P4S3 derivatives have been obtained as pairs of coordination isomers, with the cage linked either through the apical or through one of the basal P atoms, the latter form predominating (95 percent abundance), irrespective of the L-L ligand. The monometal complex [Ru(η5-C5Me5)(dppe)(η1-Pbasal-P4Se3)]BPh4 reacts with 1 to afford the dimetal compound [{Ru(η5-C5Me5)(dppe)}2(μ,η1:1-Pbasal-Papical-P4Se3)](BPh4)2, where the cage exhibits both modes of bonding. The compounds have been characterized by NMR spectra (1H, 13C and 31P) and elemental analyses. A theoretical analysis of the bonding properties of the two coordination isomer types is also presented.
