Adducts of niobium(V) and tantalum(V) halides. XIV. Structure and relative stability of the adducts with some phosphoryl compounds |
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| Authors: | Christian M P Favez Henri Rollier Andr E Merbach |
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| Institution: | Christian M. P. Favez,Henri Rollier,André E. Merbach |
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| Abstract: | The adducts of niobium(V) and tantalum(V) halides with some phosphoryl compounds have been studied in chloroform solution by 1H- and 19F-FT-NMR. spectroscopy. These octahedral adducts of general formula MX5 · L (M = Nb, Ta; X = F, Cl, Br; L = phosphoryl ligand) are monomeric and neutral. Their relative stability constants have been determined at ?60°. The stabilities are controlled by electronic effects of substituents on the phosphoryl group. |
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