The Nonanuclear [Mo(IV){(CN)Fe(III)(3-ethoxy-saldptn)}8]Cl4 Complex Compound Exhibits Multiple Spin Transitions Observed by Mössbauer Spectroscopy
The Nonanuclear [Mo(IV){(CN)Fe(III)(3-ethoxy-saldptn)}8]Cl4 Complex Compound Exhibits Multiple Spin Transitions Observed by Mössbauer Spectroscopy
复制标题
穆斯堡尔谱观察到非核 [Mo(IV){(CN)Fe(III)(3-ethoxy-saldptn)}8]Cl4 配合物表现出多重自旋跃迁
DOI：
10.1023/b:hype.0000043256.98660.81
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发表时间：
2004
影响因子：
--
通讯作者：
P. Kerep
中科院分区：
文献类型：
--
作者：
F. Renz;P. Kerep
以1,7-二氨基-4-氮杂庚烷和相应的3-乙氧基-水杨醛为原料，采用席夫碱缩合法制备了五齿配体3-EO-5LH2= 3-乙氧基-水杨醛= N,N ' -二（3-乙氧基-1-羟基-2-苄基）-1,7-二氨基-4-氮杂庚烷。3-EO-5LH2是5LH2的立体延伸。它与Fe（III）络合得到高自旋（S=5/2）配合物[Fe(III)(3-EO-5L)Cl]。该前体与[Mo(CN)8]4 -结合，得到一个蓝色的无核簇[Mo(IV){(CN)Fe(III)(3-EO-5L)}8]Cl4。这种星形非核化合物是室温下的高自旋体系。在冷却至10 K时，一些铁（III）中心切换到低自旋状态，如Mössbauer光谱所证明的那样，即多重电子跃迁。
The pentadentate ligand 3-EO-5LH2= 3-ethoxy-saldptn = N,N′-bis(3-ethoxy-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 3-ethoxy-salicyaldehyde. 3-EO-5LH2 is a sterical extention to 5LH2. Its complexation with Fe(III) gave the high-spin (S=5/2) complex of [Fe(III)(3-EO-5L)Cl]. This precursor was combined with [Mo(CN)8]4− and a blue nonanuclear cluster [Mo(IV){(CN)Fe(III)(3-EO-5L)}8]Cl4 resulted. This starshaped nonanuclear compound is a high-spin system at room temperature. On cooling to 10 K some of the eight iron(III) centers switched to the low-spin state as proven by Mössbauer spectra, i.e. multiple electronic transitions.