Conţinutul numărului revistei |
Articolul precedent |
Articolul urmator |
153 0 |
SM ISO690:2012 SAMUSI, Nina, TSAPKOV, Victor I., KRAVCHENKO, V.. Cobalt, Nickel, and Copper Coordination Compounds with Benzoin Isonicotinoylhydrazone. In: Russian Journal of General Chemistry, 1997, vol. 67, pp. 1929-1934. ISSN 1070-3632. |
EXPORT metadate: Google Scholar Crossref CERIF DataCite Dublin Core |
Russian Journal of General Chemistry | ||||||
Volumul 67 / 1997 / ISSN 1070-3632 /ISSNe 1608-3350 | ||||||
|
||||||
Pag. 1929-1934 | ||||||
|
||||||
Rezumat | ||||||
Isonicotinic acid hydrazide in ethanol enters into a condensation reaction with benzoin in the presence of cobalt, nickel, and copper chlorides to give benzoin isonicotinoylhydrazone (HL), which forms coordination the compounds MLCl·2 H2O (M = Co, Ni, and Cu) with these metal ions. In the presence of amines (A = C5H5N, 3- and 4-CH3C5H4N) this reaction yields complexes MA2LCl, whereas replacement of chlorides by acetates results in formation of ML2·n H2O (n = 0, 2). The complexes synthesized have a pseudooctahedral structure of the coordination polyhedra. The Schiff's base HL behaves in these complexes as a tridentate monobasic O,N,O ligand. Thermolysis of the compounds involves the stages of dehydration, deamination, and exhaustive thermal decomposition. Kinetic parameters for the first stage of the pyrolysis of the complexes have been calculated. |
||||||
|