| Autor: |
Zhao, Liang, Niel, Virginie, Thompson, Laurence K., Xu, Zhiqiang, Milway, Victoria A., Harvey, Rosemary G., Miller, David O., Wilson, Claire, Leech, Michael, Howard, Judith A. K., Heath, Sarah L. |
| Zdroj: |
Dalton Transactions; 2004, Vol. 2004 Issue: 9 p1446-1455, 10p |
| Abstrakt: |
Polynuclear manganeseii, cobaltiiiii, ironiiiii and nickelii complexes of a group of flexible polydentate dihydrazone ligands, based on pyridine-2,6-dipicolinic A, oxalic B and malonic C subunits are described. Structural details are reported for the linear dinuclear complexes Ni22poap2H2O2NO34·2CH3OH·2.5H2O 1, Mn2pttpNO32CH3OH2H2O2NO32·H2O 2 and Mn2mapttp2NO32H2O2NO32·10H2O 3, a square tetranuclear complex Co4pttp4Br6·9H2O 4, a tetranuclear tetrahedral complex Ni4pttp6BF46F2·14H2O 7, and a mixed spin state tetranuclear Niii complex 2pyoap2Ni4CH3OH4·1.5CH3OH 10, with a diamond-like arrangement of metal ions. The paramagnetic metal centers are well separated in each case, leading to weak antiferromagnetic coupling or non-existent spin exchange. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
