Herein, we report a ruthenium‐catalyzed ketone directed ortho‐arylation wherein the addition of bidentate NC‐type ligand, most effectively 2‐(o‐tolyl) pyridine, significantly enhances C‐H arylation reaction. Various aryl‐alkyl ketones, including cyclic, aliphatic, and heterocyclic ones, are competent substrates, arylboronic acid esters were used as aryl sources. However, substitution with OMe C...

By investigating the coordination chemistry of a neutral N-heterocyclic olefin phosphine ligand, a new digold(i) chloride complex was discovered, demonstrating that mixed element (P/C) donor sites can be accessed at the same time. However attempts to extend this strategy for the preparation of heterobimetallic complexes featuring copper(i) and gold(i) centers with this mixed donor ligand were u...

The chemistry of metal cyclopropenyl complexes derived from deprotonation of cationic ruthenium vinylidene complexes is reviewed. Such a metal coordinated cyclopropenyl ligand can be used for the preparation of heterocyclic compounds. The chemical reactivity of cyclopropenyl complexes is influenced by the nature of substituents on the three-membered ring and by the nature of ancillary ligand ar...

The title compound, [Ru(C47H43N2)Cl(C10H14)]·2C6H6, crystallized with two independent mol-ecules of benzene. One of the N-aryl moieties of the N-heterocyclic carbene (NHC) ligand underwent cyclo-metallation to form a five-membered ruthenacycle. The complex has a three-legged piano-stool structure with two C atoms incorporated in the five-membered ruthenacycle and a Cl atom as legs. The ruthenac...

An enantioselective conjugate addition of boron to α,β-unsaturated ketones catalysed by either a N-heterocyclic carbene or a copper-carbene complex generated in situ from a new chiral bicyclic triazolium based on [2.2]paracyclophane is presented. The dual chiral carbene-copper catalyst has significant advantages over its carbene counterpart as an organocatalyst in asymmetric β-boration of acycl...

The cover picture shows the crystal structure of an iridium complex with N-heterocyclic carbene-arsinidenide ligand. This represents carbene analogue rare transition metal-arsinidene complexes and has shortest iridium-arsenic bond length reported to date, indicating presence strong metal-arsenic π-interaction. More details are presented in communication A. Doddi et al. (DOI: 10.1002/zaac.202300...

The facile synthesis of a new 3-hydroxyadamantyl-functionalized N-heterocyclic carbene (NHC) ligand and its corresponding rhodium complex [Rh(NHC)(COD)Cl] is described. This features an unusually large yaw distortion angle (θ = 6.8°) for monodentate NHC species, which attributed to unsymmetrical nature the steric imbalance between two wingtips. comprehensive analysis angles in 85 related Rh spe...

A new heterocyclic Schiff base ligand bis(2-(pyridin-2-ylimino)phenyl)-4,4'-(diazene-1,2diyl)dibenzoate (BPPD, L) and its metal complexes with divalent transition metal ions viz., Co(II), Ni(II), Cu(II) and Zn(II) have been synthesized and characterized through IR, NMR and elemental analysis. The ligand and its complexes have been screened for the antibacterial activities towards bacteria Staph...

The development of a model system to study ruthenium-olefin complexes relevant to the mechanism of olefin metathesis has been reported recently. Upon addition of the ligand precursor 1,2-divinylbenzene to [RuCl(2)(Py)(2)(H(2)IMes)(==CHPh)] (H(2)IMes=1,3-dimesityl-4,5-dihydroimidazol-2-ylidene), two ruthenium-olefin adducts are formed. Based on (1)H NMR spectroscopy experiments and X-ray crystal...