Syntheses, crystal structures and chromotropic properties of Nickel(II) mixed ligand complexes containing N-methyl-1,4-diazacycloheptane and various β-diketonates
Syntheses, crystal structures and chromotropic properties of Nickel(II) mixed ligand complexes containing N-methyl-1,4-diazacycloheptane and various β-diketonates
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含N-甲基-1,4-二氮杂环庚烷和各种β-二酮的镍(II)混合配体配合物的合成、晶体结构和变色性能
DOI：
10.1016/j.poly.2006.11.003
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发表时间：
2007
期刊：
影响因子：
2.6
通讯作者：
Y. Fukuda
中科院分区：
文献类型：
--
作者：
F. Murata;Machiko Arakawa;A. Nakao;K. Satoh;Y. Fukuda
新获得了六种配合物Ni(medach)(dike)X，其中medach= n -甲基-1,4-二氮杂环庚烷，dike= β-二酮酸如苯甲酰丙酮酸（bzac），二苯甲酰甲烷酸（dibm）， X=BPh4-， NO3-或dike: Ni(medach)(bzac)(NO3) (1a), Ni(medach)(dibm)(NO3) (2a), Ni(medach)(BPh4) (1b), Ni(medach)(dibm)(BPh4) (2b), Ni(medach)(bzac)2(1c), Ni(medach)(bzac)2（2c）。确定了配合物1a、2a、1b和2c的x射线单晶结构，并澄清了先前报道的配合物Ni(medach)(acac)(NO3) （3a）和Ni(medach)(acac)BPh4(3b) （acac=acetylacetonate）的结构。在四苯基硼酸盐和硝酸盐配合物的情况下，由于供体和受体的相互作用，在有机溶剂中观察到两种类型的溶剂致变色。这些光谱行为将与溶剂的复杂几何形状和供体和受体性质有关，并与含有线性二胺的相应配合物如N，N,N ',N ' -四亚甲基乙二胺（tmen）， Ni(tmen)(dike)X的配合物进行比较。
Six complexes, Ni(medach)(dike)X, have been newly obtained, where medach=N-methyl-1,4-diazacycloheptane, dike=a β-diketonate such as benzoylacetonate (bzac), dibenzoylmethanate (dibm), X=BPh4-, NO3- or dike: Ni(medach)(bzac)(NO3) (1a), Ni(medach)(dibm)(NO3) (2a), Ni(medach)(bzac)(BPh4) (1b), Ni(medach)(dibm)(BPh4) (2b), Ni(medach)(bzac)2(1c), Ni(medach)(dibm)2(2c). X-ray single crystal structures of the complexes 1a, 2a, 1b and 2c have been determined and the structures of the complexes Ni(medach)(acac)(NO3) (3a) and Ni(medach)(acac)BPh4(3b) (acac=acetylacetonate), reported previously, have also been clarified. In the cases of the tetraphenylborate and the nitrate complexes, two types of solvatochromism due to the donor and the acceptor interactions were observed in organic solvents. These spectral behaviors will be discussed in relation to the complex geometry and the donor and acceptor properties of the solvents, and also compared to those of the corresponding complexes containing a linear diamine such as N,N,N′,N′-tetramethylethylenediamine (tmen), Ni(tmen)(dike)X.