Exploitation of the Menshutkin Reaction for the Controlled Assembly of Halogen Bonded Architectures Incorporating 1,2-Diiodotetrafluorobenzene and 1,3,5-Triiodotrifluorobenzene
作者:Michael C. Pfrunder、Aaron S. Micallef、Llewellyn Rintoul、Dennis P. Arnold、Karl J. P. Davy、John McMurtrie
DOI:10.1021/cg201017r
日期:2012.2.1
pseudo-trigonal X-bonded nets displaying Borremean entanglement), propagating with charge-assisted C–I···Cl– halogen bonds. The method was found to be versatile, and substitution of DABCO with triethylamine (TEA) gave (TEA-CH2Cl)3[(1,2-DITFB)Cl3]·4(H2O) (mixed halogen bond hydrogen bond network with 2D supramolecular connectivity) and TEA-CH2Cl[(1,3,5-TITFB)Cl] (tightly packed planar trigonal nets). The co-crystals
1,4-二氮杂双环[2.2.2]辛烷(DABCO)与1,2-二碘四氟苯(1,2-DITFB),[(1,2-DITFB)2 DABCO]和1形成明确共晶3,5-三碘代三氟苯,[(1,3,5-TITFB)2 DABCO]。两种系统均显示出超乎预期的超分子连通性,这激发了人们在替代结晶溶剂中寻找多晶型物的需求。在二氯甲烷溶液中,发现发生Menshutkin反应,通过溶剂与DABCO之间的反应生成氯离子和季铵阳离子。控制氯离子的原位产生促进了新的卤素键合网络DABCO-CH 2 Cl [(1,2-DITFB)Cl](之字形X键合链)和(DABCO-CH 2 Cl)3的结晶[(1,3,5- TITFB)2氯3 ]·氯仿3(2D伪-trigonal X键合的网显示Borremean缠结),具有电荷辅助C-1···氯传播-卤键。发现该方法通用,用三乙胺(TEA)取代DABCO得到(TEA-CH 2 Cl)3