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Crystal and Molecular Structure of Two Tetradentate

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Crystal and Molecular Structure of Two Tetradentate

“Oxime-and-Amide” Ligands

Igor O. Fritsky

;a

, Aldona Karaczyn

b

, Henryk Kozłowski

;b

, Tadeusz Głowiak

b

, Elena V. Prisyazhnaya

a

aDepartment of Chemistry, Shevchenko University, Kiev 252033, Ukraine

bFaculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50383 Wrocław, Poland Z. Naturforsch.54 b,456–460 (1999); received November 25, 1998

Tetradentate Ligands, X-Ray Data

Syntheses and X-ray structure analyses of two new tetradentate ligands with “oxime-and- amide” donor systems (N,N'-bis(2-hydroiminopropionyl)-1,2-diaminoethane and N,N'-bis(2- hydroxyiminopropionyl)-1,4-diaminobutane) were performed. The overall conformation of both ligands is distinctly different from that reported earlier for N,N'-bis(2-hydroxyimino- propionyl)-1,2-diaminopropane. The number of methylene groups critically influences the lig- and geometry and may have distinct impact on the co-ordinating ability of the ligands.

Reprint requests to Dr. I. O. Fritsky, e-mail: kokozay@chem.kiev.ua, or Prof. H. Kozlowski, e-mail: henrykoz@wchuwr.chem.uni.wroc.pl

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