Crystal structures of ruthenium(III) cis- and trans-trifluoroacetylacetonate |
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| Authors: | N. B. Morozova N. V. Kuratieva K. V. Zherikova T. N. Cheremisina |
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| Affiliation: | 1. A. V. Nikolaev Institute of Inorganic Chemistry, Siberian Division, Russian Academy of Sciences, Novosibirsk, Russia
2. Novosibirsk State University of Architecture and Civil Engineering, Novosibirsk, Russia
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| Abstract: | Single crystal X-ray diffraction analysis is used to determine the structures of ruthenium(III) cis and trans trifluoroacetylacetonate at a temperature of 150 K. The crystallographic data for cis-C15H12F9O6Ru are: a = 8.6562(3) Å, b = 12.6941(3) Å, c= 17.8776(5) Å, β = 93.129(1)°, P21/n space group, V = 1961.51(10) Å3, Z = 4, d x =1.897 g/cm3, R = 0.0565. For trans C15H12F9O6Ru they are: a = 13.4060(3) Å, b = 14.5946(3) Å, c = 20.1316(4) Å, Pcab space group, V = 3938.85(14) Å3, Z = 8, d x = 1.890 g/cm3, R = 0.0840. Both structures are molecular and built of neutral molecules; the metal atom coordinates six atoms of oxygen of three ligands of β-diketone. The R—O distances in cis Ru(tfac)3 lie between 1.99 Å and 2.03 Å; in trans Ru(tfac)3, 1.99 Å and 2.02 Å. The molecules in the crystal are bonded only by van der Waals interactions; in the structures of the cis and trans forms, the six shortest Ru…Ru distances lie within the limits of 7.601-8.656 Å and 7.326–7.714 Å respectively. |
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