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Steric Effects on Base Adduct Formation and Crystal Structures of Diastereomers of a Nickel(II) Schiff Base Complex
Author(s) -
Jäger ErnstG.,
Schuhmann Kerstin,
Görls Helmar
Publication year - 1997
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19971301114
Subject(s) - chemistry , steric effects , adduct , schiff base , diastereomer , crystal structure , nickel , ligand (biochemistry) , medicinal chemistry , titration , base (topology) , stereochemistry , polymer chemistry , crystallography , organic chemistry , receptor , mathematical analysis , biochemistry , mathematics
Reaction of the ligand meso ‐H 2 L, derived from cis ‐diaminocyclohexane and ethyl cyano(ethoxymethylene)acetate, with nickel(II) acetate gives meso ‐NiL. Spectrophotometric titration of RR ‐NiL and meso ‐NiL with various nitrogen bases reveals a strong influence of the steric hindrance of the diaminocyclohexanediyl bridge in meso ‐NiL on the base adduct stability. The structures of RR ‐NiL and meso ‐NIL have been established by X‐ray diffraction.