alpha-Tris(2,4-pentanedionato-kappa(2)O,O')cobalt(III) at 240, 210, 180, 150 and 110 K
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Updated: Jul 13, 2026

Cellular Lipid Extraction for Targeted Stable Isotope Dilution Liquid Chromatography-Mass Spectrometry Analysis
Published on: November 17, 2011
Lars S von Chrzanowski1, Martin Lutz, Anthony L Spek
1Bijvoet Center for Biomolecular Research, Crystal and Structural Chemistry, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands. l.vonchrzanowdki@chem.uu.nl
Abstract:
The crystal structure of the title compound, [Co(C(5)H(7)O(2))(3)], has been investigated by a multi-temperature measurement. In contrast to the isomorphous Al compound, the title compound exists in the studied temperature range as its monoclinic alpha polymorph (space group P2(1)/c) and does not undergo a phase transition. Rigid-body TLS analyses have been performed and the anisotropic thermal expansion tensor alpha(ij) has been determined. The cell axes show a linear expansion behavior with respect to the temperature, but the slope is significantly different. A possible explanation are the different strengths of different intermolecular C-H...O contacts, which run in different crystallographic directions.
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