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Correlation Between Polarographic Half‐Wave Potentials and Electronic Spectra of Cis‐Trans Complexes of Chromium (III) and Rhodium (III)
Author(s) -
Wei HoHsiang,
Li TingTung
Publication year - 1977
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.197700025
Subject(s) - chemistry , polarography , rhodium , chromium , linear correlation , spectral line , cis–trans isomerism , molecular electronic transition , analytical chemistry (journal) , stereochemistry , molecule , quantum mechanics , organic chemistry , statistics , physics , mathematics , catalysis
A linear correlation between half‐wave potential (E 1/2 ) for the process M(III)→M(II) and the first d‐d transition band (v) of the types cis and trans ‐[M( en ) 2 X 2 ] n+ (M=Cr(III) and Rh(III), X=ONO − , NCS − , F − , Cl − , Br − , I − , H 2 O, DMF, DMSO, n =1, 3) was found. The plots of the difference in half‐wave potential (ΔE 1/2 ) against the difference in the first d‐d transition hand (Δv) for the cis and trans isomer are straight lines. The equations, E 1/2 =β/nαF+K 1 and Δ E 1/2 =(β/NαF)Δ were derived, and used to describe the linear correlations between polarographic behavior and electronic spectrum.