Halogen bond (XB) is a highly directional and specific interaction driven by the σ-hole, a positively charged region on the hind side of X along the R−X bond axis that is caused by an anisotropy of electron d...
Professor Franziska Zimmermann's team at the University of Tübingen in Germany published a paper in the journal J. Med. Chem., introducing the unique advantages of CF2X (X= Cl, Br or I) groups as halogen bond donors. This discovery provides ...
hydrogen bondHalogen bonding is the attractive interaction of an electrophilic region of a halogen with a nucleophile. Its geometry, energy, and dominantly electrostatic nature resemble that of the hydrogen bond. Halogen bond strength critically depends on the electron deficiency of the halogen. ...
Halogen bonds are strong, specific, and directional interactions that give rise to well-defined structures. Halogen bond strengths range from 5-180 kJ/mol. The strength of XB allows it to compete with HB, which are a little bit weaker in strength. Halogen bonds tend to form at 180° angle...
Halogen bonds are a highly directional class of intermolecular interactions widely employed in chemistry and chemical biology. This linear interaction is commonly viewed to be analogous to the hydrogen bond because hydrogen bonding models also intuitivel
网络卤键;分子间卤键 网络释义 1. 卤键 zh.wikipedia.org|基于 1 个网页 2. 分子间卤键 分子间卤键,... ... ) intermolecular bonding energy 分子间键能 )halogen bond分子间卤键) intermolecular linkage 分子间键 ... www.dictall.com|基于 1 个网页...
A halogen bond represents a closed shell interaction between the electron deficient σ-hole opposite a covalently bonded halogen atom, particularly in heavier halogens such as iodine and an electron rich ‘halogen bond acceptor’ such as a pyridine lone pair [62]. ...
As elucidated by computational and experimental studies, the allyl glycosyl sulfones (as donors) form halogen bond complexes with perfluoroalkyl iodides, which—merely by visible light irradiation—fragment via radical intermediates to give the electrophilic glycosyl iodides. In situ trapping by various ...
Halogen bondThe use of a bidentate halogen bond donor to catalyse Povarov reactions of imines derived from aryladehydes and anilines is reported. Dienophiles used in these reactions included 2,3ヾihydrofuran, N﹙inylyrrolidone and N〤bz﹑rotected 2,3ヾihydropyrrole. Very high isolated ...
a Schematic view of the herein explored halogen bond donor tftib and the acceptors NPh3, PPh3, AsPh3, SbPh3, and BiPh3. Structures of the halogen-bonded molecular assemblies in the cocrystals: b (tftib)(PPh3), c (tftib)(AsPh3), and d (tftib)(SbPh3) Full size image Results ...