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Two Schiff base ligands derived from 1,2-diaminocyclohexane

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Abstract

The crystal structures of the free ligands 2,2'-[(1,2-cyclohexanediyl)bis(nitrilomethylidyne)]bisphenol, C20H22N2O2, (I), and 2,2'-[(1,2-cyclohexanediyl)bis(nitriloethylidyne)]bisphenol C22H26N2O2, (II), have been determined. In both molecules the N-O distances are indicative of intramolecular hydrogen bonding. In compound (I), the two aromatic rings are inclined at an angle of 56.5 (1)degrees and the O ... O separation is 6.082 (3) Angstrom; in compound (II) the corresponding values are 83.15 (8)degrees and 5.544 (5) Angstrom. Thus, it is evident that the methyl groups in (II) have a very significant effect upon the overall conformation

Topics: QD
Publisher: MUNKSGAARD INT PUBL LTD
OAI identifier: oai:wrap.warwick.ac.uk:18833
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