Publishing House SB RAS:

Publishing House SB RAS:

Address of the Publishing House SB RAS:
Morskoy pr. 2, 630090 Novosibirsk, Russia



Advanced Search

Journal of Structural Chemistry

2010 year, number 3

crystal structures of ruthenium(III) Cis and trans trifluoroacetylАcetonate

N. B. Morozova, N. V. Kuratieva, K. V. Zherikova, T. N. Cheremisina
Keywords: ruthenium(III), trifluoroacetylacetone, cis and trans, synthesis, single crystal X-ray diffraction analysis
Pages: 605-609

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, dx = 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, dx = 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 Ru-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.