Hypervalent bond of main-group metal and its electric conductivity

在我们对主要族金属卤络合物的研究中，我们发现了有趣的电学性质，即电子电导和离子电导。研究了钙钛矿型AsnBr3(ACs，CH3NH3)晶体的电子电导，并用X-射线衍射仪、^1^1^9Sn核磁共振和^81^1BrNQR等方法对其进行了研究。在CH3NH3SnBr3的低温相中，证实了锡-溴及其反式锡-溴键之间的特征反式效应。另一方面，在氟化物KSbF4、KSn2F5和RbPbF3中发现了离子导电性。通过^1@S9@E1F、^1^1^9Sn、^8@S7@E1Rb核磁共振和X射线衍射以及Rietveld分析对这些晶体进行了研究，并根据中心金属的结构和超价性质讨论了这些电学性质。

In our study of the halocomplexes of main group metals, we have found interesting electric properties, i.e., electronic conductivity and ionic conductivity. Electronic conductivity was found for perovskites AsnBr_3 (A Cs, CH_3NH_3) and these crystals were studied by means of X-ray diffraction, ^1^1^9Sn NMR and ^81^1Br NQR.At the low temperature phase of CH^3NH^3SnBr_3, the anionic sub-lattice deformed considerably and its conductivity decreased to an order of an insulator. A characteristic trans effect between bonds, Sn-Br and its trans Sn-Br, was confirmed at the low temperature phases of CH_3NH_3SnBr_3.Ionic conductivity, on the other hand, was found for fluorides such as KSbF_4, KSn_2F_5, and RbPbF_3. These crystals were investigated by means of ^1@S9@E1F, ^1^1^9Sn, ^8@S7@E1Rb NMR and X-ray diffraction followed by a Rietveld analysis.These electric properties were discussed on the basis of the structure and the hypervalent nature of the central metals.