Acta Crystallographica Section C

Volume 65, Part 11 (November 2009)

metal-organic compounds

 

Di--oxido-bis{bis[N,N'-bis(2-pyridylmethyl)ethane-1,2-diamine]manganese(III,IV)} tris(perchlorate) hexahydrate: clarification of an order-disorder phase transition

A. Nielsen, C. J. McKenzie and A. D. Bond

Abstract: The title compound, [Mn₂O₂(C₁₄H₁₈N₄)₂](ClO₄)₃·6H₂O, contains a mixed-valent Mn^III/Mn^IV complex. In accordance with a previous report [Collins, Hodgson, Michelsen & Towle (1987). J. Chem. Soc. Chem. Commun. pp. 1659-1660], the structure at 295 K is best described in the space group C2/c, with the complex exhibiting twofold rotational symmetry, and with half site occupancy for one perchlorate anion and several solvent water molecules. At 180 K, the structure is ordered in the subgroup P2₁/n and is clearly shown to be a hexahydrate, rather than the previously reported trihydrate. The origin of the order-disorder phase transition lies in the thermal motion of the perchlorate anions.

Formula: [Mn₂O₂(C₁₄H₁₈N₄)₂](ClO₄)₃·6H₂O at 180 and 295 K

	Structure factor file (CIF format) (420.7 kbytes) [ doi:10.1107/S0108270109042127/sf3119I_180Ksup2.hkl ] Contains datablock I_180K
	Structure factor file (CIF format) (216.9 kbytes) [ doi:10.1107/S0108270109042127/sf3119I_295Ksup3.hkl ] Contains datablock I_295K

To open or display or play some files, you may need to set your browser up to use the appropriate software. See the full list of file types for an explanation of the different file types and their related mime types and, where available links to sites from where the appropriate software may be obtained.

The download button will force most browsers to prompt for a file name to store the data on your hard disk.

Where possible, images are represented by thumbnails.

Copyright © International Union of Crystallography
IUCr Webmaster