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Coordination compounds of some d metals with nitrophenylhydrazone oxopyridine (pyrimidine) derivatives: Crystal and molecular structure of C10H9N5O6 |
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| Authors: | O V Kovalchukova A V Churakov S B Strashnova Al-Tahan Rana Abdulillah Abbas V S Sergienko D N Kuznetsov K I Kobrakov |
| Institution: | 1207. People’s Friendship University of Russia, ul. Miklukho-Maklaya 6, Moscow, 117198, Russia 2207. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991, Russia 3207. Institute of Technology, Baghdad, Iraq 4207. Kosygin Moscow State Textile University, ul. Malaya Kaluzhskaya 1, Moscow, 119071, Russia |
| Abstract: | Twelve new d-metal complexes with 5-(4-nitrophenyl)hydrazo]pyrimidine-2,4,6-trione (HL1) and 4-methyl-5-4-nitrophenylhydrazo]-2,6-dioxo-1,2,5,6-tetrahydropyridine-3-carbonitryl (HL2) have been synthesized and separated out in the crystalline state. The crystal and molecular structures of HL1 have been solved by X-ray diffraction analysis. The organic molecule exists in the crystalline state as a planar hydrazo tautomer stabilized by intramolecular hydrogen bonds. Metal coordination is bidentate chelate. The acid-base equilibria and complexation of the ligands in solutions have been studied, and the complexation constants have been found. |
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