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Kinetics of anation reactions of a water-soluble Rh(III)-porphyrin

✍ Scribed by M. Krishnamurthy

Publisher
Elsevier Science
Year
1977
Tongue
English
Weight
369 KB
Volume
25
Category
Article
ISSN
0020-1693

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✦ Synopsis

Synthesis and characterization of sodium tetra-psulfonatophenylporphinatorhodium(III) (Rh(Ill)-TPPS) is reported. Equilibrium constants for the reactions Rh(III)TPPS + SCN = [Rh(III)TPPS-(SCN)], and Rh(III/TPPS + CN = [Rh(III)TPPS-(CN)] have been determined to be 39M-' and 1880-M-' respectively. Rates and activation parameters of these anation reactions have also been determined.

Possible mechanisms are discussed.

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these coordination compounds. Deviating from the photochemistry of the regular (coplanar) metalloporphyrins, the out-of-plane structure and the kinetic lability of the SAT complexes facilitate the photodissociation as well as the separation of the primary products of the photoinduced LMCT reaction,