A Molecular Chain of Four Co(II) Ions Stabilized by a Tris-Pyridyl/Bis-beta-Diketonate Ligand

作者：Barrios Leoni A; Aguila David; Roubeau Olivier; Murray Keith S; Aromi Guillem^*

来源：Australian Journal of Chemistry, 2009, 62(9): 1130-1136.

DOI：10.1071/CH09183

The synthesis and characterization of a tris-pyridyl/bis-beta-diketone molecule ( H(2)L) is reported. This compound acts as a hexadentate ligand towards Co(II) to facilitate the assembly of a tetranuclear molecular chain of closely spaced metals with formula [Co(4)L(2)( MeOH)(8)](NO(3))(4) (1), which exhibits a very flat [Co(4)L(2)](4 ) platform, as determined by single-crystal X-ray diffraction crystallography. Complex 1 readily exchanges axial methanol ligands with water molecules. The bulk magnetization of the resulting hydrate, 1a, shows that the metals in the [Co(4)L(2)](4 ) moiety exhibit spin-orbit coupling and antiferromagnetic exchange interactions.

• 出版日期2009