title: alpha-Tris(2,4-pentanedionato-kappa(2)O,O')aluminum(III) at 240, 210, 180, 150 and 110 K: a new delta phase at 110 K.
abstract: The crystal structure of the title compound, [Al(C(5)H(7)O(2))(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 delta 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.
authors.affiliation: Bijvoet Center for Biomolecular Research, Crystal and Structural Chemistry, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands. l.vonchrzanowski@chem.uu.nl
authors.forename: Lars S
authors.initials: LS
authors.lastname: von Chrzanowski
authors.forename: Martin
authors.initials: M
authors.lastname: Lutz
authors.forename: Anthony L
authors.initials: AL
authors.lastname: Spek
mesh_terms: D000535:Aluminum / Q000737:chemistry; D003460:Crystallization; D018360:Crystallography, X-Ray; D008958:Models, Molecular; D009942:Organometallic Compounds / Q000737:chemistry*; D013696:Temperature
chemical_list: D009942:Organometallic Compounds; C519326:alpha-tris(2,4-pentanedionato-kappa(2)O,O')aluminum(III); D000535:Aluminum