Effect of N-substitution in multinuclear complexes allows interplay between magnetic states and multistability investigated by Mössbauer spectroscopy
Effect of N-substitution in multinuclear complexes allows interplay between magnetic states and multistability investigated by Mössbauer spectroscopy
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多核配合物中 N 取代的影响允许磁态与穆斯堡尔谱研究的多稳定性之间的相互作用
DOI：
10.1007/s10751-006-9394-2
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发表时间：
2007
影响因子：
--
通讯作者：
F. Werner
中科院分区：
文献类型：
--
作者：
F. Renz;D. Hill;P. Kerep;M. Klein;R. Müller;F. Werner
通过水杨醛与1，7-二氨基-4-氮杂庚烷的Schiff碱缩合反应，合成了一系列五齿配体N-X-5LH 2（X = H，甲基，苄基）= N-X-saldptn（4-X-N，N′-双（1-羟基-2-亚苄基）-1，7-二氨基-4-氮杂庚烷）。与Fe（III）络合生成一系列高自旋（S = 5/2）配合物[Fe III（N-X-5L）Cl]。这些前体与[Mo（CN）8]4−结合，得到一系列蓝色非无核簇合物[MoIV{（CN）FeIII（N-X-5L）}8] Cl 4。这种星形的非无核化合物在室温下是高自旋系统。冷却到10 K时，一些铁（III）中心切换到低自旋状态，如穆斯堡尔谱所证明的，即多个电子跃迁。部分化合物进行高自旋到高自旋的转变。在光照下，种群略有改变。
A series of pentadentate ligands N–X–5LH2 (X = H, Methyl, Benzyl) = N–X–saldptn (4-X-N,N′-bis(1-hydroxy-2-benzylidene)-1,7-diamino-4-azaheptane) has been prepared by a Schiff base condensation between 1,7-diamino-4-X-azaheptane and salicylaldehyde. Complexation with Fe(III) yields a series of high-spin (S = 5/2) complexes of [FeIII(N–X–5L)Cl]. Such precursors were combined with [Mo(CN)8]4− and a series of blue nonanuclear cluster compounds [MoIV{(CN)FeIII(N–X–5L)}8]Cl4 resulted. Such star-shaped nonanuclear compounds are high-spin systems at room temperature. On cooling to 10 K some of the iron(III) centers switched to the low-spin state as proven by Mössbauer spectra, i.e. multiple electronic transitions. Parts of the compounds perform a high-spin to high-spin transition. Under light irradiation the populations are altered slightly.
穆斯堡尔光谱观察到七核和非核复杂化合物中前所未有的多重电子自旋跃迁
影响因子：
2.6
作者：
Franz Renz;Patrick Kerep
通讯作者：
Patrick Kerep