Synthesis and structural investigation of hafnium(IV) complexes with acetylacetone and trifluoroacetylacetone

被引：0
|
作者：
K. V. Zherikova
N. B. Morozova
N. V. Kuratieva
I. A. Baidina
I. K. Igumenov
机构：
[1] Russian Academy of Sciences,A. V. Nikolaev Institute of Inorganic Chemistry, Siberian Division
来源：
Journal of Structural Chemistry | 2005年 / 46卷
关键词：
hafnium(IV) β-diketonates; synthesis; crystal structure; mononuclear complex;
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摘要：
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, dcalc = 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, dcalc = 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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页码：1039 / 1046
页数：7
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