The Double‐Faced Nature of Hydrogen Bonding in Hydroxy‐Functionalized Ionic Liquids Shown by Neutron Diffraction and Molecular Dynamics Simulations
作者:Thomas Niemann、Jan Neumann、Peter Stange、Sabrina Gärtner、Tristan G. A. Youngs、Dietmar Paschek、Gregory G. Warr、Rob Atkin、Ralf Ludwig
DOI:10.1002/anie.201904712
日期:2019.9.9
characterize the double-faced nature of hydrogen bonding in hydroxy-functionalized ionic liquids by means of neutron diffraction with isotopic substitution (NDIS), molecular dynamics (MD) simulations, and quantum chemical calculations. NDIS data are fit using the empirical potential structure refinement technique (EPSR) to elucidate the nearest neighbor H⋅⋅⋅O and O⋅⋅⋅O pair distribution functions for hydrogen
我们通过具有同位素取代(NDIS)的中子衍射,分子动力学(MD)模拟和量子化学计算来表征羟基官能化离子液体中氢键的双面性质。使用经验电势结构细化技术(EPSR)拟合NDIS数据,以阐明带正电荷和相同电荷的离子之间氢键的最近邻H⋅⋅⋅O和O⋅⋅⋅O对分布函数。尽管存在排斥性库仑力,但是阳离子-阳离子相互作用比阳离子-阴离子相互作用更强。我们将“双电荷氢键”的氢键几何形状与分子液体(例如水和醇)报道的氢键几何形状进行比较。结合,