904893-06-7Relevant academic research and scientific papers
Raceimization of chiral tetrahedral organotransition-metal clusters: A novel fluxional process
Jaouen, Gérard,Marinetti, Angela,Saillard, Jean-Yves,Sayer, Brian G.,McGlinchey, Michael J.
, p. 225 - 227 (2008/10/08)
The intrinsically chiral tetrahedral organotransition-metal clusters PhC ≡ CCO2CHMe2[(C5H5)Ni - M], where M is Co(CO)3 (1), (C5H5)Mo(CO)2 (2), or Mn(CO)4 (3), have been prepared. The low symmetry of these molecules allows the detection and analysis of a new fluxionaf process, viz., the formal rotation of the M - M and C - G bond vectors. Using high-field NMR spectroscopy, ΔG* for 2 is 20.5 ± 0.5 kcal/mol. The fluxionality and high reactivity of these molecules toward addition of an Fe(CO)3 moiety are rationalized in terms of Wade's rules for electron-deficient clusters.
