A Mixed-valent Heterometallic [Mn4Co4] Complex from Reductive Rearrangement of a [Mn4] Single-Molecule Magnet

Ana Tesouro Vallina (1) , Lollita Lecren (1) , Yang-Guang Li (1) , Olivier Roubeau (1) , Rodolphe Clérac (1)

1 CRPP - Centre de recherches Paul Pascal

The synthesis, crystal structure and magnetic properties of the mixed-metal aggregate [Mn4Co4(hmp)6(pic)9(H2O)2(OH)]- (ClO4)3·xH2O·yCH3CN (3·xH2O·yCH3CN) are reported. This complex was prepared by the reaction of a [Mn4] single-molecule magnet and a cobalt monomeric complex, [Co(pic)2(H2O)2]·2H2O (1). Complex 3 crystallizes in the triclinic P1¯ space group and con-sists of a cationic [MnII 4CoIII 3CoII] octaheteronuclear complex that possesses a symmetric equilateral triangle-based pyramid core with a cobalt main base and a manganese minor base.

Mots clés: Heteronuclear complexes; Crystal structure; Magnetic properties; Picolinic acid; Hydroxymethylpyridine

Domaines: Matériaux

Ana Tesouro Vallina, Lollita Lecren, Yang-Guang Li, Olivier Roubeau, Rodolphe Clérac. A Mixed-valent Heterometallic [Mn4Co4] Complex from Reductive Rearrangement of a [Mn4] Single-Molecule Magnet. Journal of Inorganic and General Chemistry / Zeitschrift für anorganische und allgemeine Chemie, 2007, 633, pp. 2400-2407. ⟨10.1002/zaac.200700277⟩. ⟨hal-00258433⟩