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Die Strukturen zweier 1:2‐Chromkomplexe von o , o ′‐Dihydroxydiaryl‐ trans ‐azo‐Farbstoffmolekeln
Author(s) -
Grieb Rita,
Niggli A.
Publication year - 1965
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.19650480209
Subject(s) - chemistry , crystal structure , molecule , crystallography , pyridinium , bond length , metal , chromium , ion , stereochemistry , medicinal chemistry , organic chemistry
The crystal structure determinations of two pyridinium salts of 1:2‐chromium complexes formed by o , o ′‐dihydroxy‐ trans ‐azo molecules show that the structure of the anions corresponds to the D REW ‐P FITZNER arrangement [2], as postulated by G. S CHETTY [1] for cases where the ligands form five‐ and six‐membered rings with the metal ion. The correct structure formulae are given (cf. formulae I and II); as the refinement of both structures is still going on, further details (such as bond lengths and bond angles) will be published in Z. Krist.