Abstract
Two volatile hafnium(IV) complexes with acetylacetone and trifluoroacetylacetone (HL) have been prepared and their structures have been studied at −30°C. Crystal data for C20H28HfO8: a = 21.5493(4) Å, b = 8.36720(10) Å, c = 13.9905(3) Å; β = 116.5550(10)°, space group C2/c, Z = 4, d calc = 1.692 g/cm3, R = 0.015. Crystal data for C20H16F12HfO8: a = 8.1039(12) Å, b = 11.4499(14) Å, c = 15.790(2) Å; α = 99.341(4)°, β = 103.175(4)°, γ = 108.185(4)°, space group P−1, Z = 2, d calc = 2.003 g/cm3, R = 0.074. Both structures are molecular and comprise isolated complex molecules HfL4. The hafnium atom is coordinated with eight oxygen atoms of four β-diketonate ligands, Hf-O distances varying from 2.153 Å to 2.191 Å. The molecules make van der Waals contacts in the structures.
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Translated from Zhurnal Strukturnoi Khimii, Vol. 46, No. 6, pp.1081–1088, November–December, 2005.
Original Russian Text Copyright © 2005 by K. V. Zherikova, N. B. Morozova, N. V. Kuratieva, I. A. Baidina, and I. K. Igumenov
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Zherikova, K.V., Morozova, N.B., Kuratieva, N.V. et al. Synthesis and structural investigation of hafnium(IV) complexes with acetylacetone and trifluoroacetylacetone. J Struct Chem 46, 1039–1046 (2005). https://doi.org/10.1007/s10947-006-0239-2
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DOI: https://doi.org/10.1007/s10947-006-0239-2