STRUCTURE OF bis-(1,1,1-TRIFLUORO-2-(METHYLIMINO)PENTANOATO-4)COPPER(II). THERMAL PROPERTIES OF N-METHYLSUBSTITUTED COPPER(II) ОІ-IMINOKETONATES
E. S. Vikulova1, S. I. Dorovskikh1, A. D. Shushanyan2, N. V. Kuratieva2, P. A. Stabnikov1, L. N. Zelenina2, N. B. Morozova2
1Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2Novosibirsk National Research State University, Novosibirsk, Russia
Keywords: синтез, ОІ-иминокетонаты меди(II), рентгеноструктурный анализ, термогравиометрия, дифференциально-сканирующая калориметрия, synthesis, copper(II) ОІ-iminoketonates, single crystal X-ray diffraction analysis, thermogravimetry, differential scanning calorimetry
Abstract
The single crystal X-ray diffraction (XRD) method was used to determine the structure of the [Cu(mi-tfac)2] (mi-tfac = MeC(O)CHC(NMe)CF3) complex at the temperature of 150 K. The crystallographic data are as follows: space group Pnna , a = 11.8798(16) Å, b = 12.0315(16) Å, c = 10.6259(14) Å, V = 1518.8(4) Å3, Z = 4, R = 0.0288. The structure is molecular, the coordination environment of copper in the molecule adopts a distorted tetrahedral geometry. The Cu-O and Cu-N distances are 1.9182(13) Å and 1.9610(16) Å respectively, the OCuN chelate angle is 94.18(5)°. The thermal properties of the compounds [Cu(mi-tfac)2] and [Cu(RC(O)CHC(NMe)R)2] (R = Me, t Bu) in the condensed phase have been studied by the methods of thermogravimetry and differential scanning calorimetry. The thermodynamic characteristics of the melting processes have been determined.
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