Authors: T.G. Cherkasova, E.V. Cherkasova, I.V. Isakova, E.S. Tatarinova, V.A. Sannikova

Title of the article: Coordination compounds of metals with nicotinic asid and it's derivatires

Year: 2020, Issue: 1, Pages: 76-84

Branch of knowledge: 05.17.04 Technology of organic substances

Index UDK: 54-386:[546. 16.28.47.48.49.562.732.742.] 547-327

DOI: 10.26730/1999-4125-2020-1-76-84

Abstract: Dual complex compounds are widely used in various branches of the national economy. The purpose of the present study presented in the article was to develop conditions and carry out syntheses in aqueous solutions of double complex salts of lanthanides (III) with nicotine acid and an inert complex anion [Cr (NCS)₆]^3-; Hexafluorosilicates of Co (II), Ni (II), Cu (II), Zn (II) with nicotine amide; In alcohol solutions - complexes of Co (II), Ni (II) with nicetamide and study of structure and thermal behavior of obtained compounds by methods of IR spectroscopy and X-ray structural analysis (PCA). Methods of coordination of ligands were determined by IR spectroscopy, since each has several donor centers. By X-ray structural analysis of single crystals obtained by slow isothermal evaporation of solutions of synthesized substances in air, crystal structures of complexes were studied. According to the results of the study, the structure of complex compounds is determined, a network of hydrogen bonds is formed in the structures. The article also provides data on the thermal behavior of complexes when heated in air and in an inert atmosphere. Reversible and irreversible heat-sensitive properties of the complexes have been found.

Key words: complex compounds metals nicotinic asid nicotinamide nicetamide IR spectrum monocrystal

Receiving date: 28.04.2020

Publication date: 11.06.2020

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