Abstract

Complexes of Nickel - Nicotinate with some acid amides are synthesized aiming to vary the composition and the individual properties of the compounds obtained through coordination of the nicotinate group to aceta mide, carbomide, thiocarbomide and nicotinamide. The coordination of the organic ligands, the environment of the central ion and thermal behavior of the synthesized compounds are elucidated by vibrational spectroscopy and thermal analysis. The comparative consideration of the relative intensities and the spatial structures of Nickel - Nicotinate, and the complexes synthesized shows that the new coordination compounds differ from each other and the original components as they have individual crystal lattices. Electronic spectra of the diffuse reflection of the synthesized compounds have shown that coordination compounds of divalent Nickel have an octahedral geometry. It is experimentally verified that the compounds synthesized can be used as cotton growth stimu lators.

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