Title

Homogeneous catalysts with a mechanical (Machine-like) action

RIS ID

31822

Publication Details

Swiegers, G. F., Wallace, G. G., Chen, J., Brimblecombe, R., Spiccia, L., Huang, J., MuellerWesterhoff, U. & Dismukes, C. (2009). Homogeneous catalysts with a mechanical (Machine-like) action. Chemistry: A European Journal, 15 (19), 4746-4759.

Abstract

Molecular machines? The factors involved in and the fundamental nature of a “mechanical” action within molecular catalysis is explored in detail. Such mechanical homogeneous catalysts are rare but not unknown (see graphic). The spatial and temporal nature of their catalytic action is considered. Potential implications for mimicry of enzymes are discussed.

Chemical reactions may be controlled by either: 1) the minimum threshold energy that must be overcome during collisions between reactant molecules/atoms (the activation energy, Ea), or: 2) the rate at which reactant collisions occur (the collision frequency, A)—for reactions with low Ea. Reactions of type 2 are governed by the physical, mechanical interaction of the reactants. Such mechanical processes are unusual, but not unknown in molecular catalysts. In this work we examine the machine-like nature of the action in various abiological mechanicalcatalysts and consider the implications for mimicry of biological catalysts.

Grant Number

ARC/FF0669110

Please refer to publisher version or contact your library.

Share

COinS
 

Link to publisher version (DOI)

http://dx.doi.org/10.1002/chem.200802396