deg2) with a minimum coiresponding to a planar ring conformation with ϕ = 0°.įor 1,1,3,3-tetram ethyl-1,3-disilacyclobutane, the potential function is adequately.The calculated structural parameters are comparedĪ combined X-ray diffraction study of the single crystals (Enraf-Nonius CAD-4 automatic diffractometer, MoKα radiation, graphite monochromator) and polycrystals (DRON-UM1, CuKα radiation, Ni filter) of a new volatile complex of Cu(II) obtained from fluorinated alkoxy-Β-diketone, CF3-CO-CH2-CO-C(CH3)2OCH3, is reported. The compound has a molecular structure the crystals consist of trans-bis(1,1,1-trifluoro-5-methoxy-5-methyl-2,4-hexanedionato)copper(II)Ĭomplexes. The complexes are packed to form through channels ≈5 å in diameter along the c axis, with terminal fluorine atoms facing The structure was refined anisotropically for 2314 independent reflections with I > 2Σ(I) to R = 0.069. The crystal-chemical data of the compound are compared with those of the nonfluorinated analog, trans-bis(2-methoxy-2,6,6-trimethylheptane-3,5-dionato)copper(II). The introduction of CF3 groups into alkoxy-Β-diketone considerably decreases the sublimation temperature of the complex. Measured (diffractometer Enraf-Nonius CAD-4, λMoK The structure was solved by the direct and Fourier methods and refined anisotropically (isotropically for hydrogen atoms) using the full-matrix technique to final factors R CH3CN (Phen = 1,10-phenantroline), comprising a Co(III) dicobaltacarborane cluster anion has been prepared and characterized by single crystal X-ray diffraction.Of the methoxy groups of the neighboring molecules, with Cu.O distances being 2.8 å.Ī novel compound, In both cases, the square planar environment of the Cu atom is completed to bipyramidal by interactions with the oxygen atoms Of chelate nodes in the complexes are almost equal: the Cu-0 distances are 1.92 å and the O-Cu-0 bond angles 92.1‡ (average). , graphite monochromator, θ/2θ-scanning). The structure is formed from 2+ cations, 2− anions, and acetonitrile molecules CH3CN.
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