Add time:07/19/2019         Source:sciencedirect.com

The present paper describes the synthesis and spectral properties of Rh(III) and Pd(II) coordination compounds with N-(pyridine-2-yl)morpholine-4-carbothioamide (PMCTA). The compounds have the general composition [RhL2Cl2]Cl · C2H5OH (1), [PdL2]Cl2 (2), [PdL2](ClO4)2 · 2C3H6O (2a), [PdLCl2] · 2H2O (3). All complexes were characterized by elemental analysis, IR, 1H NMR, 13C NMR, XPS and UV–Vis spectra. It has been shown that PMCTA behaves as a bidentate (N,S)-ligand, forming six membered metallocycles and coordinating to the metal ion through the carbothioamide sulfur atom and the pyridine nitrogen atom. The UV–Vis spectra suggest that the Pd(II) complexes are square planar, while the Rh(III) complex has an octahedral geometry. The molecular structure of the Pd(II) complex with PMCTA (M:L = 1:2) was determined by single-crystal X-ray diffraction.

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