Disorder effects in Mn12-acetate at 83 K

被引：39

作者：

Cornia, A

Fabretti, AC

Sessoli, R

Sorace, L

Gatteschi, D

Barra, AL

Daiguebonne, C

Roisnel, T

机构：

[1] Univ Modena & Reggio Emilia, Dipartimento Chim, I-41100 Modena, Italy

[2] Univ Modena & Reggio Emilia, INSTM, I-41100 Modena, Italy

[3] Univ Florence, Dipartimento Chim, I-50019 Sesto Fiorentino, Italy

[4] Univ Florence, INSTM, I-50019 Sesto Fiorentino, Italy

[5] CNRS, Lab Champs Magnet Intenses, F-38042 Grenoble 9, France

[6] INSA CS 14315, GRCM Chim Inorgan Lanthanides, F-35043 Rennes, France

[7] Univ Rennes 1, Chim Solide & Inorgan Mol Lab, CNRS, F-35042 Rennes, France

来源：

ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS | 2002年 / 58卷 / 07期

关键词：

D O I：

10.1107/S0108270102009010

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The structure of hexadeca-mu-acetato-tetraaquadodeca-mu(3) oxo-dodecamanganese bis(acetic acid) tetrahydrate, [Mn12O12 (CH3COO)(16) (H2O)(4)].2CH(3)COOH.4H(2)O, known as Mn-12- acetate, has been determined at 83 (2) K by X-ray diffraction methods. The fourfold (S-4) molecular symmetry is disrupted by a strong hydrogen-bonding interaction with the disordered acetic acid molecule of solvation, which displaces one of the acetate ligands in the cluster. Up to six Mn-12 isomers are potentially present in the crystal lattice, which differ in the number and arrangement of hydrogen-bonded acetic acid molecules. These results considerably improve the structural information available on this molecular nanomagnet, which was first synthesized and characterized by Lis [Acta Cryst. (1980), B36, 2042-2046].

引用

页码：m371 / m373

页数：3

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[1] COMPLETION AND REFINEMENT OF CRYSTAL-STRUCTURES WITH SIR92 [J].