Results 191 to 200 of about 12,869 (241)

Halogen bond-induced electrophilic aromatic halogenations

Organic & Biomolecular Chemistry, 2021
This review highlights the recent development of halogen bond-induced activations of N -halosuccinimides and N , N -dihalodimethylhydantoins in electrophilic aromatic halogenations.
Wanutcha Lorpaiboon, Pakorn Bovonsombat
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Halogen⋯Halogen Interactions: Nature, Directionality and Applications

Chemistry – An Asian Journal, 2023
AbstractHalogen⋯halogen interaction is a highly debated and important topic in crystal engineering and supramolecular chemistry. There are controversies about the nature and geometry of these interactions. F, Cl, Br and I are the four halogens involved in these interactions. Very often the lighter and the heavier halogens behave differently. The nature
Binoy K. Saha, Ragima V. P. Veluthaparambath, Vibha Krishna G.   +2 more
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Synthon crossover between halogen⋯π and halogen⋯halogen interaction

CrystEngComm, 2014
The synthon crossover between the halogen⋯π interaction and halogen bonding in a series of N-(4-halophenyl)-2-naphthamide and N-(4-halophenyl)quinoline-2-carboxamide has been investigated by different methods. The results indicate that the heteroatom substitution in the aromatic ring leads to a change in the iodine bonding acceptor site from the iodine
Hamid Reza Khavasi, Alireza Ghanbarpour, Alireza Azhdari Tehrani   +2 more
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Absence of halogen...halogen interactions in chlorotrimethylsilane polymorphs

Acta Crystallographica Section B Structural Science, 2006
The structures of in situ pressure-frozen chlorotrimethylsilane crystals, (CH3)3SiCl, have been determined at 0.23, 0.30 and 0.58 GPa. The molecular arrangements in the low-temperature and high-pressure phases are two-dimensionally isostructural, but different in the third perpendicular direction.
Roman, Gajda, Kamil, Dziubek, Andrzej, Katrusiak   +2 more
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Hetero-Halogen···Halogen Interactions

Crystal Growth & Design, 2023
Ragima V. P. Veluthaparambath, Thamarainathan Doulassiramane, Ramanathan Padmanaban, Binoy K. Saha   +3 more
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SELECTIVE HALOGENATION OF AROMATICS BY DIMETHYL-DIOXIRANE AND HALOGEN IONS

Synthetic Communications, 2001
The oxidation of halogen anions by dimethyldioxirane (DMD) produced reactive species which led, in acidic media, to the halogenation of activated aromatic rings.
Bovicelli P, Mincione E, Antonioletti R, Bernini R, Colombari M   +4 more
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Halogens in the Troposphere

Analytical Chemistry, 2009
Although inorganic halogen gases are believed to play key roles in the chemistry of the lower atmosphere, many of them have not yet been detected or measured in ambient air. This article describes some of the current techniques and future needs for inorganic halogens in air.
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Ingestion of Halogens

Archives of Dermatology, 1972
To the Editor.— In the past three months, I have treated two female patients, one aged 53, the second aged 32, both of whom had developed a noncomedone type of adult facial acne. The first patient had been ingesting an anticholengeric drug, mepenzolate bromide (Cantril) for months.
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Studies in halogen-halogen bonding

Theoretica Chimica Acta, 1970
G. H. Cheesman, A. J. T. Finney, I. K. Snook   +2 more
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Halogen chemistry.

1998
A large number of halogenated organics have been produced commercially in the past few decades, which have been used for a variety of purposes. The quest for enviromentally friendly technology in general has risen to a substantial thrust to get away from chlorocarbons and halogenated materials altogether, due to the generic deleteriousness associated ...
BRESSAN M., MORVILLO, ANTONINO
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