作者:Toni Mäkelä、Elina Kalenius、Kari Rissanen
DOI:10.1021/acs.inorgchem.5b01577
日期:2015.9.21
hydrogen-bonding acceptor ability of the anions. The receptor shows a remarkable positive cooperativity toward halide anions Cl–, Br–, and I– when complexed with Na+, K+, or Rb+. The solid-state binding modes of R1 with alkali and ammonium halides or oxyanions were confirmed by the X-ray structures of R1 with KF, KCl, KBr, KI, RbCl, NH4Cl, NH4Br, KAcO, K2CO3, and K2SO4. They clearly present two different
一个简单的18冠6基双脲受体R 1可以从市售原料中分三步合成。在1 H NMR溶液中,固态通过单晶X射线衍射和在气相中通过质谱研究了受体对阴离子,阳离子和离子对的行为。在4:1 CDCl 3 /二甲基亚砜溶液中,遵循阴离子氢键受体能力的趋势,卤化物阴离子的受体结合偏好为I –