A Hydrolysis-Resistant Terminal ME Bond (M = Nb; E = S, Se: M = Ta; E = S) in a Chalcogenido-Substituted Mixed-Metal Polyoxoanion
作者:Emil Radkov、Ying-Jie Lu、Robert H. Beer
DOI:10.1021/ic951053y
日期:1996.1.1
New examples of terminal group 5 chalcogenido-substituted polytungstates with the Keggin [PW(11)O(39)ME](4-) (M = Nb, Ta; E = S, Se) (pictured) and Lindquist [W5O18NbSe](3-) structures have been prepared by oxo/chalcogenido ligand substitution reactions. The compounds and their reactions with H2O in nonaqueous solution were characterized by IR and O-17, P-31, W-183,and Se-77 NMR spectroscopy. The terminal group 5 metal-chalcogenido bond, found previously to be very susceptible to hydrolysis, is hydrolysis resistant for the Keggin ion series (M = Nb; E = S, Se: M = Ta; E = S).
Wardle, Robert W. M.; Mahler, Charles H.; Chau, Chung-Nin, Inorganic Chemistry, 1988, vol. 27, # 16, p. 2790 - 2795
作者:Wardle, Robert W. M.、Mahler, Charles H.、Chau, Chung-Nin、Ibers, James A.