| μ-草酰二胺Cu(Ⅱ)-Fe(Ⅱ)双核配合物的合成与磁性 |
| THE SYNTHESES AND MAGNETIC PROPERTIES OF μ-OXAMIDO HETEROBINUCLEAR COPPER(Ⅱ)-IRON(Ⅱ) COMPLEXES |
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| 摘要: 合成和表征了两种含草酰胺桥的新型异双核配合物［Cu(oxae)Fe(tmen)2］SO4(a)和［Cu(oxpn)Fe(tmen)2］SO4(b)。变温磁化率(4～300K)测量和磁分析表明两个Cu(Ⅱ)-Fe(Ⅱ)双核配合物中金属离子间有中等强度的反铁磁超交换作用。 |
| 关键词: 草酰胺桥 异双核配合物 Cu(Ⅱ)-Fe(Ⅱ) 磁性 |
| 基金项目: |
| Abstract: Two new μ-oxamido heterobinuclear complexes ［Cu(oxae)Fe(tmen)2］SO4(a) and ［Cu(oxpn)Fe(tmen)2］SO4(b) have been synthesized and characterized, where tmen stands for N,N,N′,N′-tetramethylenediamine; oxae and oxpn represent N,N′-bis(2-aminoethyl)oxamido dianion and N,N′-bis(3-aminopropyl)oxamido dianion, respectively. The temperature dependent-mangnetic susceptibilities of two complexes have been studied over the range 4～300 K, and the exchange integral J is found to be -75.69 cm-1 for (a) and -18.58 cm-1 for (b), on the basis of spin Hamiltonian H=-2JS1·S2-DS2Z1. The results are commensurate with moderately strong antiferromagnetic superexchange interactions between the metal ions. |
| Keywords: oxamido-bridge heterobinuclear complex copper(Ⅱ)-iron(Ⅱ) magnetism |
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| 李延团,焉翠蔚,韩庆奎,廖代正.μ-草酰二胺Cu(Ⅱ)-Fe(Ⅱ)双核配合物的合成与磁性[J].无机化学学报,1998,14(4):478-481. |
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