作者:Lisa M. Kirchner、Nathan P. Bowling、Eric Bosch
DOI:10.1007/s10870-015-0616-9
日期:2015.12
The X-ray structure of a series of 1,4-diethynylbenzene bridged pyridyl polyfluoroiodo- and polyfluorobromophenyls designed to form self-complementary dimers in the solid state are reported. The compound 2-[[4-[(3-bromotetrafluorophenyl)ethynyl]phenyl]ethynyl]pyridine, 1, crystalized in the triclinic space group P-1 with unit cell parameters a = 6.3332(4) (Å), b = 7.4288(4) (Å), c = 17.8897(10) (Å) and α = 91.0980(10)°, β = 90.8580(10)° and γ = 94.3830(10)°. The asymmetric unit contains a unique molecule as a self-complementary halogen bonded dimer. Compounds 2, 3-[[4-[(2-bromotetrafluorophenyl)ethynyl]phenyl]ethynyl]pyridine and 3, 3-[[4-[(2-iodotetrafluorophenyl)ethynyl]phenyl]ethynyl]pyridine both crystalized in the triclinic space group P-1 and are isostructural with unit cell parameters a = 6.1324(13) (Å), b = 11.264(2) (Å), c = 13.064(3) (Å), α = 66.646(3)°, β = 89.736(3)°, γ = 87.726(3)° for 2 and a = 6.1671(5) (Å), b = 11. 2571(9) (Å), c = 13.3083(11) (Å), α = 66.2870(10)°, β = 88.1990(10)°, γ = 87.3820(10)° for 3. In both structures the molecules assemble as essentially planar self-complementary halogen bonded dimers. In contrast 3-[[4-[(2-bromo-4,5-difluorophenyl)ethynyl]phenyl]ethynyl]pyridine, 4, crystalized in the monoclinic space group P21/c with unit cell parameters a = 18.7881(7) (Å), b = 3.83820(10) (Å), c = 22.9321(9) (Å), α = γ = 90°, β = 102.6180(10)° and featured a C–H···N hydrogen bonded dimer. The formation of self-complementary halogen bonded dimers with a series of 1,4-diethynylbenzene bridged pyridyl polyfluoroiodo- and polyfluorobromophenyls is reported.
报告了一系列 1,4-二乙炔基苯桥接吡啶基多氟碘基和多氟溴苯基的 X 射线结构,其设计目的是在固态下形成自互补二聚体。化合物 2-[[4-[(3-溴四氟苯基)乙炔基]苯基]乙炔基]吡啶 1 结晶于三linic 空间群 P-1,单胞参数 a = 6.3332(4) (Å), b = 7.4288(4) (Å), c = 17.8897(10) (Å) 和 α = 91.0980(10)°, β = 90.8580(10)° 和 γ = 94.3830(10)°.不对称单元包含一个独特的分子,是自互补的卤键二聚体。化合物 2,3-[[4-[(2-溴四氟苯基)乙炔基]苯基]乙炔基]吡啶和化合物 3,3-[[4-[(2-碘四氟苯基)乙炔基]苯基]乙炔基]吡啶都在三linic 空间群 P-1 中晶体化,且结构相同,单胞参数 a = 6.1324(13) (Å), b = 11.264(2) (Å), c = 13.064(3) (Å), α = 66.646(3)°, β = 89.736(3)°, γ = 87.726(3)° for 2 and a = 6.1671(5) (Å), b = 11.2571(9) (Å), c = 13.3083(11) (Å), α = 66.2870(10)°, β = 88.1990(10)°, γ = 87.3820(10)° 。在这两种结构中,分子基本上以平面自互补卤键二聚体的形式组装。相反,3-[[4-[(2-溴-4,5-二氟苯基)乙炔基]苯基]乙炔基]吡啶 4 结晶于单斜空间群 P21/c,单胞参数 a = 18.7881(7)(埃),b = 3.83820(10)(埃),c = 22.9321(9)(埃),α = γ = 90°,β = 102.6180(10)°,并以 C-H-N 氢键二聚体为特征。报告了一系列 1,4-二乙炔基苯桥接吡啶基多氟碘苯和多氟溴苯形成的自互补卤键二聚体。