CRYSTAL STRUCTURE OF BIS(4–BENZOYL–3–METHYL–1–PHENYL–4,5–DIHYDRO–1H–PYRAZOL–5–ONATO)–(ETHANOL)–DIOXOURANE(VI) ETHANOL SOLVATE
Yu. M. Chumakov1, P. A. Petrenko1, F. G. Julea2, V. I. Tsapkov2, A. P. Gulea2
1Institute of Applied Physics, Academy of Sciences of Moldova, Chisinau, Moldova
2Moldova State University, Chisinau, Moldova
Keywords: X-ray crystallographic analysis, dioxourane complexes, 4-benzoyl-3-methyl-1-phenyl-4,5-dihydro-1H-pyrazol-5-one
Abstract
The crystal structure of bis(4-benzoyl-3-methyl-1-phenyl-4,5-dihydro-1
H-pyrazol-5-onato)-(ethanol)-dioxourane(VI) ethanol solvate [UO
2L
2(C
2H
5OH)]×C
2H
5OH (I), where HL is 4-benzoyl-3-methyl-1-phenyl-4,5-dihydro-1
H-pyrazol-5-one, is determined. The asymmetric part on the unit cell of the crystal structure of I contains the complex of uranyl ion with two bidentately coordinated L‾ ions and coordinated molecule of ethanol. In the outer coordination sphere of the central atom, the solvated ethanol molecule is located. The coordination polyhedron of the uranium atom in complex I is a pentagonal bipyramid. Its equatorial plane is composed of oxygen atoms of HL and ethanol. In the axial positions of the metal coordination polyhedron the oxygen atoms are located. In the crystal, the complexes of the studied compound are linked together via hydrogen bonds of the outer-sphere ethanol molecule in chains along the [100] direction. Between the chains in the crystal, the van der Waals interaction occurs.
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