[Mn（IMI）6]（ClO4）2的合成、晶体结构及感度

利用咪唑的水溶液和高氯酸锰水溶液反应制备高氯酸六咪唑合锰(II),培养出该配合物的单晶.用元素分析、红外光谱、DSC、TG-DTG和X射线单晶衍射等方法对该化合物进行了表征.结果表明,该晶体属于单斜晶系,空间群为P2(1)/n,晶胞参数a=11.721(2) nm, b=7.2191(13) nm, c=16.402(3) nm, β=90.064(3)°,V=1387.9(4) nm~3; Dc=1.585 g/cm~3; Z=2;F(000)=678, μ=0.160 mm, R_1=0.036 7, ωR2_=0.137 2.该化合物的分子式为Mn(IMI)_6](ClO_4) _2,是由6个咪唑分子直接与二价锰离子配位、与高氯酸根离子结合形成的配合物.热分析结果表明,在10 K/min的升温速率下,该配合物的热分解过程由1个吸热峰和1个放热峰组成,剩余残渣量在9.9%左右.感度测试结果表明,该配合物为不敏感型的含能配合物.

Synthesis, Crystal Structure and Sensitivity of [Mn(IMI)_6](ClO_4)_2

An energetic compound Mn(IMI)_6](ClO_4) _2 (IMI:imidazolium) was synthesized by reaction of imidazolium with Mn(ClO_4) _2 in aqueous solution. Single crystal of Mn(IMI) _6](ClO_4) _2 was obtained. The compound was characterized by elemental analysis, TG-DTG and single crystal X-ray diffraction analysis. The results show that the crystal belongs to a monoclinic system with P2(1)/n space group and cell parameters of a=11.721(2) nm, b=7.2191(13) nm, c=16.402(3) nm, β=90.064(3)°,V=1387.9(4) nm~3; Dc=1.585 g/cm~3; Z=2; F(000)= 678, μ=0.160 mm, R_1=0.036 7, ωR_2=0.137 2. The title compound Mn(IMI) _6](ClO_4) _2 formed by Mn(IMI) _6]~(2+) and (ClO_4)~- belongs to an ionic compound. The central Mn(II) ion is six-coordinated with six imidazole molecules. At a heating rate of 10 K/min, the thermal decomposition process of the title compound consists of one endothermic peak and one exothermic peak with 9.9% residues. The mechanic sensitivity test results show that this compound is an insensitive energetic compound.