Affordable Access

Publisher Website

Kinetics of aquation of tris(methylmalonato)chromate(III) anion in acidic solutions

Authors
Journal
Journal of Inorganic and Nuclear Chemistry
0022-1902
Publisher
Elsevier
Publication Date
Volume
34
Issue
1
Identifiers
DOI: 10.1016/0022-1902(72)80382-8

Abstract

Abstract The aquation of tris(methylmalonato)chromate(III) anion was studied at 25–40° in 0·10–1·0 F HClO 4 (μ = 0·20−1·0, NaClO 4). The observed pseudo-first order rate constant k obs was found to be dependent on the hydrogen-ion concentration over the entire range of [H +]: k obs = k′[H +] + k″ . At 25° k′ = 5·88 × 10 −41mole −1sec −1 , and k″ = 0·967 × 10 −4sec −1 . Over the temperature range E a = 22·0kcal/mol, and log PZ = 16·5. The product of aquation was found to be trans-[Cr(Mmal) 2(H 2O) 2] − (Mmal = methylmalonate), and a mechanism in which a dissociation of the protonated intermediate, [Cr(Mmal) 2(HMmal)] 2−, followed by a fast attack of two water molecules in opposite directions is proposed.

There are no comments yet on this publication. Be the first to share your thoughts.

Statistics

Seen <100 times
0 Comments

More articles like this

Kinetics of aquation of tris(malonato)chromate(III...

on Journal of Inorganic and Nucle... Jan 01, 1968

Kinetics of aquation oftris(bromomalonato)chromate...

on Inorganica Chimica Acta Jan 01, 1978

Kinetics of aquation ofcis- andtrans- diaquabis(me...

on Journal of Inorganic and Nucle... Jan 01, 1973

Kinetics of aquation of tris(malonato)cobaltate(II...

on Journal of Inorganic and Nucle... Jan 01, 1974
More articles like this..