Structures of (2E,5E)-2-(4-cyanobenzylidene)-5-(4-dimethylaminobenzylidene)cyclopentanone and (2E,5E)-2-benzylidene-5-cinnamylidenecyclopentanone
作者:Christopher A. Zoto、John C. MacDonald
DOI:10.1016/j.molstruc.2017.06.032
日期:2017.10
triclinic space group P 1 ¯ with a = 6.8743(2) A, b = 8.8115(2) A, c = 14.9664(4) A, α = 77.135(2)°, β = 81.351(2)°, γ = 80.975(2)°, and Z = 2, and exhibits a planar structure. Compound II crystallizes in the monoclinic space group C 2/ c with a = 33.4281(10) A, b = 11.9668(4) A, c = 7.8031(2) A, β = 92.785(2)°, and Z = 8, and adopts a nonplanar structure in the solid state and calculated structure.
摘要 ( 2E,5E )-2-(4-氰基苯亚甲基)-5-(4-二甲氨基苯亚甲基)环戊酮( I )和( 2E,5E )-2-苯亚甲基-5-肉桂基环戊酮( II )的X射线晶体结构呈现,与使用密度泛函理论计算的气相结构相比,并在 I 和 II 展示的光物理行为的背景下进行讨论。化合物 I 在三斜空间群 P 1 ¯ 中结晶,a = 6.8743(2) A, b = 8.8115(2) A, c = 14.9664(4) A, α = 77.135(2)°, β = 81.351(2) °,γ = 80.975(2)°,Z = 2,呈现平面结构。化合物 II 在单斜空间群 C 2/ c 中结晶,a = 33.4281(10) A,b = 11.9668(4) A,c = 7.8031(2) A,β = 92.785(2)°,Z = 8,并在固态和计算结构中采用非平面结构。