Interrelation between H-bond and Pi-electron delocalization

L Sobczyk, SJ Grabowski, TM Krygowski - Chemical reviews, 2005 - ACS Publications
Among many various kinds of molecular interactions, the H-bond has a special position. The
term is ubiquitous in the world that surrounds us, but also it is often applied in different ways …

Theoretical studies of strong hydrogen bonds

SJ Grabowski - Annual Reports Section" C"(Physical Chemistry), 2006 - pubs.rsc.org
Strong hydrogen bonds are analyzed and their specific characteristics are given. These
interactions are compared with typical H-bonds. All analyses included are mainly based on …

Hydrogen bonding strength—measures based on geometric and topological parameters

SJ Grabowski - Journal of Physical Organic Chemistry, 2004 - Wiley Online Library
Different methods of estimating H‐bond strength are presented. The studies are based on
the results of MP2/6–311++ G** calculations and the binding energies are corrected for the …

Cooperativity in hydrogen-bonded interactions: ab initio and “atoms in molecules” analyses

M Ziółkowski, SJ Grabowski… - The Journal of Physical …, 2006 - ACS Publications
The H2CO⊙⊙⊙(HF) n (n= 1,..., 9) complexes were investigated using the MP2 method and
the following basis sets: 6-311++ G (d, p), aug-cc-pVDZ and aug-cc-pVTZ. It was found that …

In vivo antitumor, in vitro antibacterial activity and alkylating properties of phosphorohydrazine derivatives of coumarin and chromone

J Nawrot-Modranka, E Nawrot, J Graczyk - European journal of medicinal …, 2006 - Elsevier
The aim of this research was to examine chemical and biological properties of the products
(4a–c/5a–c, 8b–c, 9a–b) of the reaction of methyl chromone-3-carboxylate (2), 3-formyl-4 …

How Short Can the H⊙⊙⊙ H Intermolecular Contact Be? New Findings that Reveal the Covalent Nature of Extremely Strong Interactions

SJ Grabowski, WA Sokalski… - The Journal of Physical …, 2005 - ACS Publications
Ab initio calculations at the MP2/6-311++ G (d, p) and MP2/aug-cc-pVDZ//MP2/aug-cc-pVTZ
levels have been performed for the following complexes: H2OH+⊙⊙⊙ HBeH …

Tautomerism in hydroxynaphthaldehyde anils and azo analogues: a combined experimental and computational study

WMF Fabian, L Antonov, D Nedeltcheva… - The Journal of …, 2004 - ACS Publications
The enol imine⇄ enaminone tautomerization constants, KT, and thermodynamic parameters,
Δ HT and Δ ST, of 1-hydroxy-2-naphthaldehyde Schiff bases are determined by UV/vis …

Intramolecular hydrogen bond energy and its decomposition—O–H∙∙∙ O interactions

SJ Grabowski - Crystals, 2020 - mdpi.com
The method to calculate the energy of intramolecular hydrogen bond is proposed and tested
for a sample of malonaldehyde and its fluorine derivatives; the corresponding calculations …

Dimers of formic acid, acetic acid, formamide and pyrrole-2-carboxylic acid: an ab initio study

RW Gora, SJ Grabowski… - The Journal of Physical …, 2005 - ACS Publications
The intermolecular hydrogen bonds in dimers of formic acid, acetic acid, and formamide
were investigated. Additionally, three configurations of the pyrrole-2-carboxylic acid (PCA) …

Interplay between Intramolecular Resonance-Assisted Hydrogen Bonding and Aromaticity in o-Hydroxyaryl Aldehydes

M Palusiak, S Simon, M Sola - The Journal of organic chemistry, 2006 - ACS Publications
In this work, we analyze a series of o-hydroxyaryl aldehydes to discuss the interrelation
between the resonance-assisted hydrogen bond (RAHB) formation and the aromaticity of …