【摘要】 题目所指化合物晶体属单斜晶系,空间群P2₁/a,晶胞参数a=10.256,b=14.809,c=7.171,B=103.4°晶胞中分子数Z=4,晶体密度Dc=1.62gcm^-3。由直接法和傅里叶（Fourier）综合解得粗结构,经块对角矩阵最小二乘修正,偏离因子R为0.047。N→Si配位键键长为2.062,三个五员环近乎120°角相交,扭角分别为18.64°,19,34°和18.45°。环上的C（12）,C（22）,C（32）均偏离环的同一侧,三个环呈风扇形,两个氯原子与三个氧原子呈交叉构象。更多还原

【Abstract】 We have studied the molecular structure of some of the compounds known as silatrane which show various biological activity and given the discussions in detail in the previous papers. The title compound synthesized by triethanolamine and dichloromethyl triethoxyl silane belongs to the space group p21/A, with a=10.256, b=14.809, c=7.171A, β=103.4°. The high electronegativity of the dichloromethyl group results in a shorter N-Si bond distance (2.062A). Its electronegativity lies between Cl- and ClCH2-.更多还原