Acta Crystallographica Section C

Crystal Structure Communications

Volume 63, Part 3 (March 2007)

metal-organic compounds

 

-Tris(2,4-pentanedionato-²O,O')aluminium(III) at 240, 210, 180, 150 and 110 K: a new phase at 110 K

L. S. von Chrzanowski, M. Lutz and A. L. Spek

Abstract: The crystal structure of the title compound, [Al(C₅H₇O₂)₃], has been investigated by a multi-temperature measurement to provide information on thermal vibrations and disorder in the structure. At 110 K, the structure of a new polymorph could be determined. A disorder-order phase transition takes place between 150 and 110 K and is klassengleich. The unit-cell volume increases by a factor of three and the diffraction pattern shows weak supercell reflections.

Formula: [Al(C₅H₇O₂)₃] at 240, 210, 180, 150 and 110 K

	Structure factor file (CIF format) (189.7 kbytes) [ doi:10.1107/S0108270107005707/av3070Iasup2.hkl ] Contains datablock Ia
	Structure factor file (CIF format) (187.4 kbytes) [ doi:10.1107/S0108270107005707/av3070Ibsup3.hkl ] Contains datablock Ib
	Structure factor file (CIF format) (186.3 kbytes) [ doi:10.1107/S0108270107005707/av3070Icsup4.hkl ] Contains datablock Ic
	Structure factor file (CIF format) (184.9 kbytes) [ doi:10.1107/S0108270107005707/av3070Idsup5.hkl ] Contains datablock Id
	Structure factor file (CIF format) (549.2 kbytes) [ doi:10.1107/S0108270107005707/av3070Iesup6.hkl ] Contains datablock Ie

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