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Aromatic compounds --- Composés aromatiques --- Aromatic compounds. --- Aromaticity (Chemistry) --- Basic Sciences. Chemistry --- Organic Chemistry --- Aromaticity (Chemistry). --- Organic Chemistry. --- Composés aromatiques

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Homogeneous catalysis owes its success, in large part, to the development of a wide range of ligands with well-defined electronic and steric properties, which have thus made it possible to adjust the behavior of many organometallic complexes. However, ligands used in catalysis have long been centered on elements of group 15, and it is only more recently that carbon ligands have proved to be valuable alternatives with the emergence of cyclic diaminocarbenes (NHC).This Special Issue aims to provide a contemporary overview of the advances in carbon ligand chemistry from fundamental aspects to applications.

Research & information: general --- carbenes --- ylides --- DFT calculations --- electronic structure --- catalysis --- ligands --- structure–activity relationship --- NHC --- nanoparticle --- calixarene --- palladium catalyst --- Suzuki-Miyaura reaction --- amino-acids --- water --- carbon ligand --- amide --- negative charge --- phosphonium ylide --- oxide --- pincer --- metathesis --- ruthenium --- nitro catalysts --- NHC ligands --- olefins --- selenonium ylides --- selenonium salts --- chirality --- stereogenic selenium atom --- asymmetric synthesis --- optical resolution --- reactivity --- malaria --- Plasmodium falciparum --- gold --- NHC-ligands --- hybrid molecules --- drug resistance --- N-heterocyclic carbene --- platinum --- metal complexes --- 195Pt NMR --- N-heterocyclic carbenes --- imidazole --- spectroscopy --- X-ray --- mercury(II) complex --- T-shaped --- carbodiphosphorane --- phosphorus ylides --- pincer ligands --- coordination chemistry --- Cu(I) complex --- photoluminescence --- titanium --- hafnium --- copolymerization of epoxide with CO2 --- density functional theory --- natural bond orbitals --- aromaticity --- ion pairs --- alkali metals --- tropylidenyl ions --- cyclooctatetraene ions --- rhodium --- electron paramagnetic resonance (EPR) spectroscopy --- density functional theory (DFT) --- electrochemistry --- carbone complexes --- carbido complexes --- transition metal complexes --- chemical bonding --- pincer ligand --- macrocycle --- lithium --- potassium --- intramolecular C-H activation --- dehydrogenation --- carbone --- ligand --- germylene --- coordination --- ylide --- n/a --- structure-activity relationship

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Noncovalent interactions are the bridge between ideal gas abstraction and the real world. For a long time, they were covered by two terms: van der Waals interactions and hydrogen bonding. Both experimental and quantum chemical studies have contributed to our understanding of the nature of these interactions. In the last decade, great progress has been made in identifying, quantifying, and visualizing noncovalent interactions. New types of interactions have been classified—their energetic and spatial properties have been tabulated. In the past, most studies were limited to analyzing the single strongest interaction in the molecular system under consideration, which is responsible for the most important structural properties of the system. Despite this limitation, such an approach often results in satisfactory approximations of experimental data. However, this requires knowledge of the structure of the molecular system and the absence of other competing interactions. The current challenge is to go beyond this limitation. This Special Issue collects ideas on how to study the interplay of noncovalent interactions in complex molecular systems including the effects of cooperation and anti-cooperation, solvation, reaction field, steric hindrance, intermolecular dynamics, and other weak but numerous impacts on molecular conformation, chemical reactivity, and condensed matter structure.

Research & information: general --- solvent effect --- hydrogen bond --- NMR --- condensed matter --- polarizable continuum model --- reaction field --- external electric field --- proton transfer --- halogen bond --- phosphine oxide --- 31P NMR spectroscopy --- IR spectroscopy --- non-covalent interactions --- spectral correlations --- Reaction mechanism --- first-principle calculation --- Bader charge analysis --- activation energy --- transition state structure --- conventional and non-conventional H-bonds --- empirical Grimme corrections --- lattice energy of organic salts --- computation of low-frequency Raman spectra --- confinement --- solid-state NMR --- molecular dynamics --- interfaces and surfaces --- substituent effect --- aromaticity --- adenine --- Lewis acid–Lewis base interactions --- tetrel bond --- pnicogen bond --- triel bond --- electron charge shifts --- proton dynamics --- carboxyl group --- CPMD --- DFT --- IINS --- IR --- Raman --- crystal engineering --- halogen bonding --- azo dyes --- QTAIM --- dispersion --- ketone–alcohol complexes --- density functional theory --- hydrogen bonds --- molecular recognition --- vibrational spectroscopy --- gas phase --- benchmark --- pinacolone --- deuteration --- heavy drugs --- histamine receptor --- hydrogen bonding --- receptor activation --- n/a --- Lewis acid-Lewis base interactions --- ketone-alcohol complexes