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Ligand Substitution Reaction of Bis(ethylenediamine)glycinatocobalt(III) Complex with Ethylenediamine Catalyzed by the Photo‐excited Tris(2,2′‐bipyridine)ruthenium(II) Complex
Author(s) -
Ishikawa Masahiko,
Okamoto Kenichi,
Hidaka Jinsai,
Einaga Hisahiko
Publication year - 1985
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19850680725
Subject(s) - chemistry , ethylenediamine , ruthenium , ligand (biochemistry) , tris , substitution reaction , excited state , aqueous solution , bipyridine , medicinal chemistry , photochemistry , inorganic chemistry , catalysis , organic chemistry , crystal structure , biochemistry , physics , receptor , nuclear physics
Substitution reaction with ethylenediamine of coordinated glycinate ligand in bis(ethylenediamine)‐glycinatocobalt(III) complex has been studied in the presence of photo‐excited tris(2,2′‐bipyridine)ruthenium(II) complex in alkaline aqueous solution (buffered around pH 12) containing 1.0 M chloride ion at 25°C. VIS absorption and CD spectra were used for the racemate and the optically active isomers of the Co(III) complexes, respectively. The reaction was catalyzed by the excited Ru(II) complex to give tris(ethylenediamine)cobalt(III) complex. Mechanism of the ligand‐substitution reaction and role of the excited Ru(II) complex were discussed.