Synthesis and photochemical and magnetic properties of Cr, Mn, Fe, and Co complexes based on the 1-{(1′,3′,3′-trimethylspiro[2H-1-benzopyran-2,2′-indolin]-8-yl)methyl}pyridinium cation
Synthesis and photochemical and magnetic properties of Cr, Mn, Fe, and Co complexes based on the 1-{(1′,3′,3′-trimethylspiro[2H-1-benzopyran-2,2′-indolin]-8-yl)methyl}pyridinium cation
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基于1-{(1′,3′,3′-三甲基螺环[2H-1-苯并吡喃-2,2′-吲哚啉]-8-的Cr、Mn、Fe和Co配合物的合成及其光化学和磁性能基)甲基}吡啶鎓阳离子
DOI：
10.1007/s11172-008-0188-3
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发表时间：
2008
影响因子：
1.7
通讯作者：
R. Morgunov
中科院分区：
文献类型：
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作者：
N. Sanina;S. Aldoshin;G. Shilov;E. V. Kurganova;E. A. Yurieva;N. A. Voloshin;V. Minkin;V. Nadtochenko;R. Morgunov
基于本研究中制备的SP+阳离子在苯并吡喃部分的脂肪链中含有吡啶环的螺吡喃盐SP+Br−（1），首次合成了组成为（SP）3 M（C2 O 4）3·4 H2O（M = Cr（2），Mn（3），Fe（4），and Co（5））的顺磁性（三）吡喃酸盐。根据X-射线衍射数据，SP+阳离子在起始盐1中是紧密堆积的，从而阻碍了光致变色转变。顺磁4的自旋为5/2，这对应于处于高自旋状态的FeIII原子，系统的自旋在UV照射下保持不变。在络合物3中，从铁磁性到反铁磁性的相关性的交叉后，观察到的有机螺吡喃阳离子的无机阳离子的替代。
Paramagnetic (tris)oxalates with the composition (SP)3M(C2O4)3·4H2O (M = Cr (2), Mn (3), Fe (4), and Co (5)) were synthesized for the first time based on the spiropyran salt SP+Br−(1) with the SP+cation containing the pyridine ring in the aliphatic chain of the benzopyran moiety, which was also prepared in the present study. According to X-ray diffraction data, the SP+cations in the starting salt1are close-packed thus hindering photochromic transformations. The spin for paramagnet4is 5/2, which corresponds to the FeIIIatom in the high-spin state, the spin of the system remaining unchanged under UV irradiation. In complex3, a crossover from ferromagnetic to antiferromagnetic correlations was observed after the replacement of the inorganic cation with the organic spiropyran cation.
光致变色螺吡喃耦合的二维铁混价配合物的铁磁性及其光诱导效应
DOI：
--
发表时间：
2005
期刊：
Synthetic Metals (印刷中)
影响因子：
--
作者：
I.Kashima;M.Okubo;Y.Ono;M.Itoi;N.Kida;M.Hikita;M.Enomoto;N.Kojima
通讯作者：
N.Kojima