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The Polarographic Studies of Substituent Effects in Pyridine Complexes of Transition Metals
Author(s) -
Wei HoHsiang,
Tsai ChinWu
Publication year - 1975
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.197500038
Subject(s) - chemistry , substituent , polarography , pyridine , transition metal , medicinal chemistry , stereochemistry , inorganic chemistry , organic chemistry , catalysis
Polarographic reduction half‐wave potentials for the series of inorganic complexes M(RC 5 H 4 N) 2 Cl 2 (M=Co(II), Ni(II), Cu(II), Zn(II), Cd(II); R=H, CH 3 , NH 2 , OH, CONH 3 , CHO, COCH 2 COPh, Cl, Br and CH 2 OH) are reported to show the substituent effects in these complexes. Consequently, the E 1/2 values correlated linearly with Hammett substituent parameters, the slope of the E σ Vs σ plots evidently decreases in order of Co(II), Ni(II), Cu(II), Zn(II) and Cd(II).