Structures and/or magnetic properties of three ID ladder-type manganic and cadmium compounds with open-chain diazine Schiff-base ligands
- Yue, Yan-Feng
- Gao, En-Qing
- Fang, Chen-He
- Xu, Sheng
- Yan, Chun-Hua
DOIAbstract
Three new coordination polymers [MnL1(dca)(2)](n) (1) (L-1 = 1-(2-pyridyl)-4-(2-pyrazinyl)-4-amino-1-methyl-2,3-diaza-1,3-butadiene, dca = N(CN)(2)(-)), [CdL2 (dca)(2)](n) (2) (L-2 = 1-(2-pyridyl)- 4-(2-pyrazinyl)-4-amino-2,3-diaza-1,3-butadiene) and [CdL1(dca)(2)](n) (3) have been synthesized, structurally and/or magnetically characterized. In these isostructural compounds, metal ions of octahedral geometry are bridged by double mu(1,5)-mode dca ions and further interlinked into a 1D ladder-type chain by two single mu(1,5)-mode dca ions with the Schiff-base ligands acting only as bidentate ligands. Variable temperature magnetic studies have shown that the coupling interaction between Mn(II) centers of the ladder-type Mn-dca chains is weakl...
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