Results 291 to 300 of about 84,584 (328)
Some of the next articles are maybe not open access.
Halogen bonding anion recognition
Chemical Communications, 2016The development of solution-based anion receptor molecules which exploit halogen bonding interactions is an emerging area of research. ThisFeature Articlereviews recent advances which have been made in this rapidly developing field, surveying the use of iodoperfluoroarene, haloimidazolium and halotriazole/triazolium halogen-bond-donor motifs in anion ...
Asha, Brown, Paul D, Beer
openaire +2 more sources
Halogen-bonded halogen(I) ion complexes
2023Halogen bonding occurs between a positive region of a polarized halogen (X), most commonly with an iodine or bromine atom. The polarization, caused by an electron withdrawing group (R), induces electron deficiency onto the halogen atom, creating an electropositive region known as a σ-hole.
Ward, Jas S. +4 more
openaire +2 more sources
Halogen Bond Catalyzed Bromocarbocyclization
Angewandte Chemie International Edition, 2018AbstractA halogen bond catalyzed bromo‐carbocyclization of N‐cinnamyl sulfonamides and O‐cinnamyl phenyl ethers has been developed. N‐methyl 4‐iodopyridinium triflate is used as the halogen‐bonding organocatalyst and the reaction is highly chemoselective.
Yuk‐Cheung Chan, Ying‐Yeung Yeung
openaire +2 more sources
Asymmetric bifurcated halogen bonds
Physical Chemistry Chemical Physics, 2015Depending on the relative orientation of the halogen-bond donor and acceptor, this bifurcated interaction may be classified as ‘σ-hole – lone pair’ or ‘σ-hole – π’ bonding.
Novák, Martin +2 more
openaire +2 more sources
2014
Because of its expected applicability for modulation of molecular recognition phenomena in chemistry and biology, halogen bonding has lately attracted rapidly increasing interest. As most of these processes proceed in solution, the understanding of the influence of solvents on the interaction is of utmost importance.
Anna-Carin C. Carlsson +2 more
openaire +2 more sources
Because of its expected applicability for modulation of molecular recognition phenomena in chemistry and biology, halogen bonding has lately attracted rapidly increasing interest. As most of these processes proceed in solution, the understanding of the influence of solvents on the interaction is of utmost importance.
Anna-Carin C. Carlsson +2 more
openaire +2 more sources
Halogen transfer through halogen bonds in halogen-bound ammonia homodimers
Physical Chemistry Chemical Physics, 2016Halogen bond complexes as intermediates in halogen transfer reactions betweenN-haloamines and ammonia.
Juan, Crugeiras, Ana, Ríos
openaire +2 more sources
2014
Halogens are atypical elements in biology, but are common as substituents in ligands, including thyroid hormones and inhibitors, which bind specifically to proteins and nucleic acids. The short-range, stabilizing interactions of halogens - now seen as relatively common in biology - conform generally to halogen bonds characterized in small molecule ...
openaire +2 more sources
Halogens are atypical elements in biology, but are common as substituents in ligands, including thyroid hormones and inhibitors, which bind specifically to proteins and nucleic acids. The short-range, stabilizing interactions of halogens - now seen as relatively common in biology - conform generally to halogen bonds characterized in small molecule ...
openaire +2 more sources
Halogen bonding: Recent advances
Current Opinion in Solid State and Materials Science, 2009Halogen bonding (XB), as a directional interaction between covalently bound halogen atoms (XB donor) and Lewis bases (A, XB acceptor), has been recently intensively investigated as a powerful tool in crystal engineering. After a short review on the origin and general features of halogen bonding, current developments towards (i) the elaboration of three-
openaire +1 more source
Chemical & Engineering News Archive, 2012
Halogen bonding, akin to hydrogen bonding, is a noncovalent interaction between a positive region on a halogen atom and a negative site, such as a lone pair on a nitrogen or oxygen. Following on the heels of a new definition for hydrogen bonding, an International Union of Pure & Applied Chemistry (IUPAC) committee has now proposed a definition for ...
openaire +1 more source
Halogen bonding, akin to hydrogen bonding, is a noncovalent interaction between a positive region on a halogen atom and a negative site, such as a lone pair on a nitrogen or oxygen. Following on the heels of a new definition for hydrogen bonding, an International Union of Pure & Applied Chemistry (IUPAC) committee has now proposed a definition for ...
openaire +1 more source
Science, 2017
Surface Chemistry Even though halogen atoms are highly electronegative, a noncovalent bond can form between an electron donor and a halogen atom in a covalent bond. Such interactions are facilitated by the formation of electron-depleted regions in the halogen's covalent bond, a situation least likely for fluorine atoms. Han et al.
openaire +1 more source
Surface Chemistry Even though halogen atoms are highly electronegative, a noncovalent bond can form between an electron donor and a halogen atom in a covalent bond. Such interactions are facilitated by the formation of electron-depleted regions in the halogen's covalent bond, a situation least likely for fluorine atoms. Han et al.
openaire +1 more source