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在室温和液氮温度下研究了(n-C_(16)H_(33)NH_3)_2MX_4(简称C_(16)MX)及其相应化合物n-C_(16)H_(33)NH_3X(简称C_(16)X)于4000～50cm~(-1)范围的红外光谱。结果表明,它们都形成N-H…X型氢键,氢键强度是C_(16)X大于C_(16)MX。后者氢键的强度是按Cl>Br>I的顺序递减。C_(16)MX的光谱性质可按金属离子性质分为Cu~(2+)(Cu~(2+)、Cd~(2+)、Mn~(2+))和Zn~(2+)(Zn~(2+)、Co~(2+))两组,阴离子配位多面体的形状对其光谱性质有明显影响。还比较了室温与低温下的远红外光谱,证明了M—X键是离子键。
(N-C_ (16) H_ (33) NH_3) _2MX_4 (C_ (16) MX) and its corresponding compound n_C_ (16) H_ (33) NH_3X 16) X) Infrared spectrum in the range of 4000 ~ 50cm ~ (-1). The results show that both of them form N-H ... X-type hydrogen bonds, and the hydrogen bond strength is that C 16 X is greater than C 16 MX. The strength of the latter hydrogen bonds is decreasing in the order Cl> Br> I. The spectral properties of C_ (16) MX can be divided into Cu ~ (2 +) (Cu2 +, Cd2 +, Mn2 +) and Zn2 + (Zn ~ (2 +), Co ~ (2+)) groups. The shape of the anionic coordination polyhedra has a significant effect on the spectral properties. The far-infrared spectra at room and low temperatures were also compared, confirming that the M-X bond is an ionic bond.