A heptanuclear Fe(II)-Fe(III)6 system with twelve unpaired electrons
A heptanuclear Fe(II)-Fe(III)6 system with twelve unpaired electrons
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DOI：
10.1016/s1387-7003(00)00160-x
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发表时间：
2000-11-01
影响因子：
3.8
通讯作者：
Renz, F
中科院分区：
文献类型：
--
作者：
Gembicky, M;Boca, R;Renz, F
1，7-二氨基-4-氮杂庚烷与水杨醛通过Schiff碱缩合反应合成了五齿配体（LH_2）-L-5 = saldptn = N，N ′-二（1-羟基-2-亚苄基）-1，7-二氨基-4-氮杂庚烷。它与Fe（III）的络合反应生成高自旋（S = 5/2）配合物[Fe-III（L-5）Cl]。该前体与[Fe（CN）（6）]（4-）结合，得到蓝色七核配合物[Fe-II{（CN）Fe-III（L-5）}（6）]Cl-2。磁化率测量和穆斯堡尔谱证明该体系属于具有12个未成对电子（S = 6）的高自旋分子。(C)2000 Elsevier Science S.A. All rights reserved.
The pentadentate ligand (LH2)-L-5 = saldptn = N,N'-bis(1-hydroxy-2-benzyliden)-1,7-diamino-4-azaheptane has been prepared by a Schiff base condensation between 1,7-diamino-4-azaheptane and the corresponding salicyaldehyde. Its complexation with Fe(III) gave the high-spin (S = 5/2) complex of [Fe-III(L-5)Cl]. This precursor was combined with [Fe(CN)(6)](4-) and a blue heptanuclear complex [Fe-II{(CN)Fe-III(L-5)}(6)]Cl-2 resulted. This system belongs to the class of high-spin molecules possessing twelve unpaired electrons (S = 6) as proven by the magnetic susceptibility measurements and Mossbauer spectra. (C) 2000 Elsevier Science S.A. All rights reserved.