Trindane−Ruthenium Sandwich Complexes: An NMR and X-ray Crystallographic Study of [(trindane)RuCl2]2, (trindane)RuCl2[P(OMe)3], and [(trindane)2Ru][BF4]2

Trindane and [(p-cymene)RuCl2]2 react in the melt to yield [(trindane)RuCl2]2 (4), the NMR spectra of which reveal the presence of [{(trindane)Ru}2(μ-Cl)3]Cl (6) in solution. The X-ray crystal structure of 4 reveals that two of the cyclopentene rings adopt endo envelope conformations, while the third five-membered ring is folded in an exo fashion to avoid a terminal chlorine in the other half of the dimer. Bridge cleavage with trimethyl …