1-氨基-1-肼基-2,2-二硝基乙烯(AHDNE)的合成、 晶体结构和理论计算

利用1,1-二氨基-2,2-二硝基乙烯(FOX-7)和水合肼在水体系中合成了1-氨基-1-肼基-2,2-二硝基乙烯(AHDNE), 并在甲醇溶液中培养出可用于X射线衍射的单晶. 晶体属正交晶系, 空间群为Pnma, 晶胞参数为: a＝0.6283(4) nm, b＝0.7713(5) nm, c＝1.2280(8) nm, a＝b＝g＝90°, V＝0.5950(7) nm3, Dc＝1.821 g/cm3, μ＝0.171 mm－1, F(000)＝336, Z＝4, R1＝0.0489, wR2＝0.1456. 选取标题化合物的一个结构单元作为初始模型, 运用Gaussian 03程序, 在6-311＋G(d)的基组水平上, 用HF, MP2以及B3LYP三种计算方法对标题化合物进行了几何全优化, 并对其成键情况及自然键轨道(NBO)进行了分析.

Preparation, Crystal Structure and Theoretical Calculation of 1-Amino-1-hydrazino-2,2-dinitroethene

1-Amino-1-hydrazino-2,2-dinitroethene (AHDNE) was synthesized by mixing hydrazine hydrate and FOX-7 in water. Single crystals suitable for X-ray measurement were obtained by slow evaporation of the solvent methanol at room temperature, which belong to an orthorhombic system with space group Pnma and cell parameters of a＝0.6283(4) nm, b＝0.7713(5) nm, c＝1.2280(8) nm, α＝β＝γ＝90°, V＝0.5950(7) nm3, Dc＝1.821 g/cm3, μ＝0.171 mm－1, F(000)＝336, Z＝4, R1＝0.0489, and wR2＝0.1456. The theoretical investigation of the title compound as a structural unit was carried out by HF/6-311＋G(d), MP2/6-311＋G(d) and B3LYP/6-311＋G(d) methods, and the atomic charges and natural bond orbital were analyzed.