[Mn12O12(O2CMe)12(NO3)4(H2O)4]: facile synthesis of a new type of Mn12 complex.
The title dodecanuclear Mn complex, namely dodeca-μ(2)-acetato-κ(24)O:O'-tetraaquatetra-μ(2)-nitrato-κ(8)O:O'-tetra-μ(4)-oxido-octa-μ(3)-oxido-tetramanganese(IV)octamanganese(III) nitromethane tetrasolvate, [Mn(12)(CH(3)COO)(12)(NO(3))(4)O(12)(H(2)O)(4)]·4CH(3)NO(2), was synthesized by the reaction of Mn(2+) and Ce(4+) sources in nitromethane with an excess of acetic acid. This compound is distinct from the previously known single-molecule magnet [Mn(12)O(12)(O(2)CMe)(16)(H(2)O)(4)], synthesized by Lis [Acta Cryst. (1980), B36, 2042-2044]. It is the first Mn(12)-type molecule containing nitrate ligands to be directly synthesized without the use of a preformed cluster. Additionally, this molecule is distinct from all other known Mn(12) complexes due to intermolecular hydrogen bonds between the nitrate and water ligands, which give rise to a three-dimensional network. The complex is compared to other known Mn(12) molecules in terms of its structural parameters and symmetry.
Department of Chemistry, College of Liberal Arts and Sciences, University of Florida, PO Box 117200, Gainesville, FL 32611, USA.
Annaliese E
AE
Thuijs
Department of Chemistry, College of Liberal Arts and Sciences, University of Florida, PO Box 117200, Gainesville, FL 32611, USA.
George
G
Christou
Department of Chemistry, College of Liberal Arts and Sciences, University of Florida, PO Box 117200, Gainesville, FL 32611, USA.
Khalil A
KA
Abboud
Mn12 molecule; cluster chemistry; crystal structure; in situ formation; manganese clusters; single-molecule magnets; three-dimensional network