Clearly, one can think of conservation of bond order that includes ionic and covalent contributions to both D–X and XA bonds, for not only X = H/Cl/Li investigated here but also any atom involved in intermolecular bonding. 展开 DOI: 10.1039/c4cp02585g 被引量: 18 年份: 2014 ...
Halogen bonding (XB) is a type of noncovalent interaction between a halogen atom X in one molecule and a negative site in another. X can be chlorine, bromine or iodine. The strength of the interaction increases in the order Cl<Br<I. After a brief review of experimental evidence relating ...
In subsequent years, numerous other FDHs have been discovered, some of which have been found to selectively halogenate l-tryptophan at either the 5-, 6-, or 7-position, demonstrating the significant power of these enzymes for regioselective halogenation (Fig. 1B) (Keller et al., 2000; Sei...
Electronegativity is a measure of the attraction of an atom for bonding electrons in molecules compared to that of other atoms. The electronegativity values devised by Linus Pauling, an American chemist, are dimensionless quantities that range from slightly less than one for the alkali metals to a...
Metal-catalyzed nitrogen-atom transfer methods for the oxidation of aliphatic C–H bonds. Acc. Chem. Res. 45, 911–922 (2012). CAS PubMed PubMed Central Google Scholar Paradine, S. M. & White, M. C. Iron-catalyzed intramolecular allylic C–H amination. J. Am. Chem. Soc. 134, ...
PROBLEM TO BE SOLVED: To control the amount of a neutralizing agent to be added by improving neutralization effects and to prevent the corrosion of a reactor by a method in which an organic compound having a halogen atom and/or a sulfur atom is treated with hot water, dehalogenated and/or...
A total number of 15 different 3,4-diarylthiophenes were synthesized, which bear a chlorine atom in ortho-position of one of the aryl substituents. One ary... IS And,P Bach - Chemistry - A European Journal 被引量: 0发表: 2014年 The Reaction of the [CpFe(CO)2]− Anion with ...
A new kind of cationic superatom compounds (M-F)(+) (M = OLi4, NLi5, CLi6, BLi7, and Al14) with low vertical electron affinities (VEA) has been designed based on the distinctive electronic structure of superalkaline-earth atom. The stability of the studied superatom architectures is ...
The structures of all amino acids (except glycine) are asymmetrically arranged around the α-carbon atom, with their D- and L-isomers being mirror images of each other. Emil Fischer arbitrarily assigned the carboxy group on top, the R group on bottom, and the amine group on the left for ...
for their activity, either heme-dependent or vanadium-dependent. Heme-dependent haloperoxidases, e.g., the chloroperoxidase fromC.fumago, oxidize X–ions in presence of H2O2to form the corresponding hypohalous acids (HXO, an oxyacid containing a halogen atom), which diffuse outside of the ...