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Stereochemistry and Circular Dichroism of Chiral Internal Olefin‐Platinum(II) Complexes
Author(s) -
Lazzaroni Raffaello,
Bertozzi Sergio,
Bertucci Carlo,
Salvadori Piero,
Pino Piero
Publication year - 1976
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1002/ijch.197600012
Subject(s) - chemistry , olefin fiber , chirality (physics) , circular dichroism , ethylene , platinum , benzylamine , stereochemistry , metal , sign (mathematics) , crystallography , catalysis , medicinal chemistry , organic chemistry , chiral anomaly , mathematical analysis , nambu–jona lasinio model , physics , mathematics , fermion , quantum mechanics
A series of cis ‐ and trans ‐dichloro(benzylamine) (chiral olefin) platinum(II) complexes, containing (Z) and (E) isomers of the internal chiral olefins R‐CH=CH‐R', has been prepared by ethylene displacement from the corresponding ethylene containing complexes. The particular stereochemical features of the complexes allow one to interpret the CD on the basis of the individual contributions coming from the chiral centres already present in the free olefin and from the chiral centres formed in the complexation of the double bond. Evidence is reported showing that the aforementioned contributions are additive and that the chiral centre(s) bound to the metal dominates the CD at about 400 nm, its chirality type being reflected in the sign and its chirality prevalence in the Δϵ value.