Halogen⋯ halogen interactions: nature, directionality and applications

BK Saha, RVP Veluthaparambath… - Chemistry–An Asian …, 2023 - Wiley Online Library
Halogen⋯ halogen interaction is a highly debated and important topic in crystal engineering
and supramolecular chemistry. There are controversies about the nature and geometry of …

Single─Not Double─3D-Aromaticity in an Oxidized Closo Icosahedral Dodecaiodo-Dodecaborate Cluster

J Poater, S Escayola, A Poater, F Teixidor… - Journal of the …, 2023 - ACS Publications
3D-aromatic molecules with (distorted) tetrahedral, octahedral, or spherical structures are
much less common than typical 2D-aromatic species or even 2D-aromatic-in-3D systems …

σ-Hole, lone-pair-hole, and π-hole site-based interactions in aerogen-comprising complexes: a comparative study

MAA Ibrahim, HAA Abuelliel, NAM Moussa… - RSC …, 2024 - pubs.rsc.org
Herein, the potential of ZO3 and ZF2 aerogen-comprising molecules (where Z= Ar, Kr, and
Xe) to engage in σ-, lp-, and π-hole site-based interactions was comparatively studied using …

Sigma-hole and lone-pair-hole site-based interactions of seesaw tetravalent chalcogen-bearing molecules with Lewis bases

MAA Ibrahim, RRA Saeed, MNI Shehata… - ACS …, 2023 - ACS Publications
For the first time, sigma (σ)-and lone-pair (lp)-hole site-based interactions of SF4 and SeF4
molecules in seesaw geometry with NH3 and FH Lewis bases were herein comparatively …

A combined crystallographic and theoretical investigation of noncovalent interactions in 1, 3, 4-oxadiazole-2-thione-N-Mannich derivatives: in vitro bioactivity and …

LH Al-Wahaibi, K Alagappan, RM Gomila, O Blacque… - RSC …, 2023 - pubs.rsc.org
Two 1, 3, 4-oxadiazole-2-thione-N-Mannich derivatives, specifically 5-(4-chlorophenyl)-3-[(2-
trifluoromethylphenylamino) methyl]-1, 3, 4-oxadiazole-2 (3H)-thione (1) and 5-(4 …

Does a halogen bond require positive potential on the acid and negative potential on the base?

S Scheiner - Physical Chemistry Chemical Physics, 2023 - pubs.rsc.org
It is usually expected that formation of a halogen bond (XB) requires that a region of positive
electrostatic potential associated with a σ or π-hole on the Lewis acid will interact with the …

The Unconventional Noncovalent Interactions Control: Crystallographic and Theoretical Analyses of the Crystalline Structure of 1, 1′‐(1‐Chloro‐4‐methoxyphenyl) …

M Hajji, A Haouas, N Abad, T Guerfel - ChemistrySelect, 2023 - Wiley Online Library
Unconventional noncovalent interactions are ubiquitous in molecular crystals,
supramolecular systems, and biomolecules, but their significance has often been …

Unconventional Radical and Radical-Hole Site-Based Interactions in Halogen-Bearing Dimers and Trimers: A Comparative Study

MAA Ibrahim, HSM Abd Elhafez, MNI Shehata… - ACS …, 2024 - ACS Publications
Radical (R•) and R•-hole site-based interactions are comparatively studied, for the first time,
using ab initio methods. In this regard, R•-bearing molecules• XO3 (where X= Cl, Br, and I) …

Halogen Interaction Effects on Chiral Self‐Assemblies on Cyclodipeptide Scaffolds Across Hierarchy

Z Wang, A Hao, P **ng - Small, 2023 - Wiley Online Library
How halogenation affects protein or peptide folding and self‐assembly hierarchically? This
study tries to answer this question by using the halogen bonding mediated self‐assemblies …

The role of halogen bonding in the interaction landscape directing the crystal packing in a homologous series of halogenated coumarin derivatives

MM Popa, DG Dumitrescu, S Shova, I Man… - Journal of Molecular …, 2023 - Elsevier
The role of halogen bonding as a supramolecular directing interaction was investigated in a
series of ten 3-halogenocoumarin derivatives using X-ray diffraction analysis. Halogen …