The chemistry of niobium and tantalum dithiocarbamato-complexes. Part 5. The kinetics and mechanism of the hydrazine-forming reactions between [{M(S<sub>2</sub>CNEt<sub>2</sub>)<sub>3</sub>}<sub>2</sub>(µ-N<sub>2</sub>)](M = Nb or Ta) and acid: rate-limiting protonation
作者:Richard A. Henderson、Susan H. Morgan、Alan N. Stephens
DOI:10.1039/dt9900001101
日期:——
cases the multistep mechanism involves rate-limiting protonation of the bridging dinitrogen atoms, and in one case (M = Ta) the monoprotonated species [Ta(S2CNEt2)3}2(µ-N2H)]+ was detected spectrophotometrically. The cleavage of the metal–nitrogen bond occurs after the addition of at least two protons. The factors influencing the rates of protonation of bridging and end-on co-ordinated dinitrogen molecules