Ym. Issa et al., STRUCTURAL STUDIES OF CU(II) CHELATES WITH SOME ARYLIDENE DERIVATIVESOF BENZILIC HYDRAZIDE, Monatshefte fuer Chemie, 129(1), 1998, pp. 19-29
The Cu(II) chelates of some new arylidene derivatives of benzilic hydr
azide have been synthesized and were characterized by elemental and th
ermal analyses, as well as by IR, UV/Vis, ESR, and X-ray spectroscopy.
The data revealed the formation of tetrahedral 1:1 (L :M) and square
planar 2:1 and 1:2 complexes. In the 1:1 complexes, the organic compou
nds behave as dibasic tridentate ligands towards the Cu(LI) ion, where
as in the 1:2 or 2:1 complexes they behave as monobasic bidentate subs
tituents.