作者:Joseph P. Michael、David G. Billing、Jan C.A. Boeyens、Laurence Carlton、Louis Denner、Ingrid A. Hindmarch
DOI:10.1016/0022-2860(90)85030-m
日期:1990.10
Abstract The molecular structure of [1,1′-bipyrrolidine]-2,2′-dithione (1) has been determined by single-crystal X-ray crystallography. The compound crystallizes in the orthorhombic system: Pbca, a = 9.314(12), b = 13.213(2), c = 16.321(3) A, V = 2008.4 A3, Z = 8, Dc = 1.33 g cm−3, R = 0.042 for 2583 unique reflections and 140 variable parameters. The dihedral angle between the mean planes of the rings
摘要 [1,1'-联吡咯烷]-2,2'-二硫酮 (1) 的分子结构已通过单晶 X 射线晶体学确定。该化合物在正交晶系中结晶:Pbca, a = 9.314(12), b = 13.213(2), c = 16.321(3) A, V = 2008.4 A3, Z = 8, Dc = 1.33 g cm−3, R = 0.042 对于 2583 个独特的反射和 140 个可变参数。环的平均平面之间的二面角为 104.2(7)°。环本身的构象以原始包络和扭曲形式的归一化线性组合的形式呈现。某些键距在核排斥的屏蔽方面被合理化。NN 键的有理势垒已经从氘代甲苯中的变温核磁共振 (NMR) 测量计算为 73 kJ mol-1。