Abstract
Preparation and properties of new penta-coordinate copper(II) complexes using ligands with OSO sets of donor atoms, viz. N,N,N′,N′-tetramethylthiodiacetamide (TTDA) and N,N′-dimethyl-N,N′-diphenylthiodiacetamide (DTDA), are reported. Spectral and conductivity data show that CuX 2L (X=Cl −, Br −, NO 3 −; L=TTDA and DTDA) are penta-coordinate in both the solid state and solution. These are compared with copper(II) complexes prepared by using other similar tridentate ligands. Spectral data and X-ray structural analysis (reported earlier) indicated a slightly distorted square pyramidal structure for CuCl 2. TTDA.
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