Structure of aluminum(III) dipivaloylmethanate AlOCH

Stabnikov, P.; Smolentsev, A.; Pervukhina, N.; Koshcheeva, O.; Komissarova, L.; Borisov, S.
February 2011
Journal of Structural Chemistry;Feb2011, Vol. 52 Issue 1, p118
Academic Journal
The structure of aluminum(III) tris-dipivaloylmethanate (Bruker Nonius X8 Apex diffractometer with a 4K CCD detector, λMo K, graphite monochromator, T = 150(2) K) is determined, and the synthetic procedure for its preparation is suggested. Crystal data are: C2/ c space group, a = 28.1587(12) Å, b = 18.5170(7) Å, c = 21.5332(8) Å, β = 97.573(1)°, V = 11129.8(8) Å, Z = 12, d = 1.033 g/cm, R = 6.93. The complex has a molecular structure; the aluminum atom is octahedrally surrounded by six oxygen atoms of three chelating ligands; Al-O distances are 1.860(2)-1.873(2)0A; O-Al-O angles fall within 88.08(9)-91.96(10)° and 177.93(9)-179.83(14)°. The known crystal packings of metal tris-dipivaloylmethanates are analyzed. Three types of the arrangement of the molecules in the crystals denoted as α, β, and γ are identified.


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