COORDINATION COMPOUNDS OF TIN(IV) WITH HYDAZEPAM AND PRODUCTS OF ITS CONDENSATION WITH ARYLALDEHYDES
Journal Title: Вісник Одеського національного університету. Хімія - Year 2017, Vol 22, Issue 3
Abstract
Reaction of tin tetrachloride in a 2-propanol solution and 2-(7-bromo-2-oxo-5-phenyl-3H- 1,4-benzodiazepin-1-yl)acetohydrazide (“gidazepam”, hydazepam – HHy) made it possible to obtain for the first time the corresponding tin coordination compound [Sn(HHy)Cl4] (I). A synthetic technique of the template synthesis has been developed and a novel coordination compounds [Sn(HHySl)Cl3] (II), [Sn(HHySlNO2)Cl3] (III), [Sn(HHy2Nf)Cl3] (IV), [Sn(HHy2NfBr)Cl3] (V) in the systems HHy–(HSl, HSlNO2, H2Nf, H2NfBr)–SnCl4–2-propanol, where HSl is 2-hydroxybenz-, HSlNO2 – 2-hydroxy-5-nitrobenz-, H2Nf – 1-hydroxy- 2-naphth-, H2NfBr – 4-bromo-1-hydroxy-2-naphth-aldehydes, have been synthesized. They are crystalline substances readily soluble in DMF and acetonitrile and moderately soluble in ethanol. The composition and structure of the complexes were confirmed by a number of physicochemical methods: elemental analysis, electrical conductivity, mass spectrometry, IR spectroscopy and thermogravimetry. The measurement of the electrical conductivity of solutions of the I−V in DMF has shown that they all are non-electrolytes. It was found by the thermogravimetric method that the thermolysis of complexes I−V proceeds uniformly and is stepwise in nature. The presence of peaks of molecular ions of the corresponding hydrazones in the mass spectra of complexes II−V obtained by template synthesis confirmed the formation of these hydrazones and the participation in coordination to the Sn4+ ion in the reaction course. Tin(IV) coordination polyhedron in all complexes is the octahedron formed by: four chlorine atoms, the nitrogen atom of the hydrazide amino group and the oxygen atom of the ligand carbonyl group in I; three chlorine atoms, azomethine nitrogen atom and two oxygen atoms of the carbonyl and deprotonated hydroxy group of the ligand in II−V.
Authors and Affiliations
G. V. Yalovskiy, I. M. Rakipov, V. I. Pavlovsky
DIFFERENT-LIGAND COMPLEXES OF GERMANIUM(IV) WITH MANDELIC, GALLIC ACIDS AND HETEROCYCLIC AMINES
Optimal synthesis methods of germanium(IV) coordination compounds with mandelic (Н2Mand), gallic (Н4Gal) acids and 1,10-phenantroline (phen), 2,2′-bipyridine (bipy) in water solution were developed. Their composition was...
CONDUCTIVITY OF AMINOMETHANESULPHONIC ACIDS N-DERIVATIVES AQUEOUS SOLUTIONS
Conductometric and pH-metric studies of the electrochemical properties of aqueous solutions (1∙10-4 ÷ 9∙10-3 М) of five aminomethanesulphonic acid N-alkylated derivatives (YAMSA) were carried out in the temperature range...
COMPARATIVE CHARACTERISTICS OF Co(II), Ni (II), Cu(II) COORDINATION COMPOUNDS WITH SOME HYDRAZONES OF PYRUVIC ACID
Сonducted comparative analysis of the coordination compounds of Co2+, Ni2+, Cu2+ with condensation products of 2-(7-bromo-2-oxo-5-phenyl-2,3-dihydro-1H-1,4-benzodiazepin-1-yl) acetohydrazide – Hydazepam (Hydr), nicotinoy...
ТHE RADICAL POLYMERIZATION OF METHYL METHACRYLATE IN THE PRESENCE OF MANGANESE (II) 5-METHYL-5-HEXEN-2,4-DIONATE
presence of unsaturated β-diketonate - manganese (II) 5-methyl-5-hexene-2,4-dionate (Mn(m d)2·2Н2О) were investigated. It is shown that the presence of vinyl fragments in ligand structure leads to a significant decrease...
LONG-TERM DYNAMICS FLUORINE CONTENT IN THE SURFACE WATERS OF THE BASIN KUYALNIK ESTUARY
This article summarizes the original results of a study of fluorine levels in the water of Kuyalnik estuary and its watercourses for the period 2005-2013. We estimated dynamics of annual and seasonal changes of the fluor...