Mixed Charge-Ordering State of MMX-Type Quasi-One-Dimensional Iodide-Bridged Platinum Complexes with Binary Counterions
Mixed Charge-Ordering State of MMX-Type Quasi-One-Dimensional Iodide-Bridged Platinum Complexes with Binary Counterions
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MMX型准一维碘桥铂配合物与二元抗衡离子的混合电荷有序态
DOI：
10.1021/ja807901p
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发表时间：
2008
影响因子：
15
通讯作者：
and H. Okamoto
中科院分区：
文献类型：
--
作者：
H. Iguchi;S. Takaishi;T. Kajiwara;H. Miyasaka;M. Yamashita;H. Omamoto;and H. Okamoto
通过引入两种不同的反阳离子，在准一维碘桥双核铂配合物(MMX链)中发展了一种新的电荷有序(CO)态。从晶体结构分析可知，K2(H3NCH2CHMeCH2NH3)[Pt2(POP)4I]·4H2O(POP=P_2H_2O_52−)具有交替电荷极化和电荷密度波结构特征。因此，这种新的CO态被命名为ACP+CDW态。值得注意的是，该结构是三维有序的，这一点在X射线振荡照片中观察到的强超晶格反射中得到了证实。用偏振拉曼光谱和31P MAS核磁共振谱分别研究了Pt2单元和四个不同价态的P原子。这些结果与晶体结构分析相一致，支持ACP+CDW状态的存在。
A new charge-ordering (CO) state in quasi-1D iodide-bridged dinuclear Pt complexes (MMX-chains) was developed by introducing two different kinds of countercations. From crystal structure analysis, K2(H3NCH2CHMeCH2NH3)[Pt2(pop)4I]·4H2O (pop = P2H2O52−) had structural features of both ACP (alternating charge-polarization) and CDW (charge-density-wave) states. Therefore, this new CO state was named ACP+CDW state. Remarkably, the structure was three dimensionally ordered, which was verified by the strong superlattice reflections observed in an X-ray oscillation photograph. Using polarized Raman and31P MAS NMR spectroscopies, it was shown that there were two different Pt2units and four inequivalent P atoms, respectively. These results agreed with the crystal structure analysis and supported the presence of the ACP+CDW state.