634908-10-4Relevant academic research and scientific papers
Syntheses, spectroscopy and fluxional behavior of the η3-crotyl, C3H4(CH3), pyrolidinyldithiocarbamate molybdenum complexes
Yih, Kuang-Hway,Lee, Gene-Hsiang,Huang, Shou-Ling,Wang, Yu
, p. 271 - 278 (2008/10/08)
The endo- and exo-complexes [Mo{η3-C3H4(CH3)}(η 2-S2CNC4H8)(CO)(η 2-diphos)] (diphos: dppm={bis(diphenylphosphino)methane} (2); dppe={1,2-bis(diphenylphosphino)ethane} (3) are prepared by reacting the 16-electron complex [Mo{η3-C3H4(CH3)}(η 2-S2CNC4H8)(CO)2] (1) with diphos in refluxing acetonitrile. The orientations of endo and exo are defined in such a way that the open face of the allyl group and carbonyl group are in the same direction in the former and in the opposite direction in the latter. The variable temperature 1H NMR was used to confirm that there was no allyl rotation behavior of endo?exo interconversion of 2 before the thermal decomposition. X-ray crystal structure of exo-2 has been employed to elucidate the exo orientation and the methyl moiety of the allyl ligand is found to orient away from the dppm ligand.
