This review is aimed at providing a concise overview of the results obtained by our group in field organometallic chemistry gold. Therefore, selection examples amongst most extensively explored families bioactive gold complexes — Au(I) N-heterocyclic carbenes and cyclometalated Au(III) compounds presented. Insights into bio-inorganic mechanisms reactivity organogold an integrated investigationa...

We communicate a general method for the syntheses of acenaphthene-fused imidazolinium salts that are direct precursors to augmented N-heterocyclic carbenes with fixed cis geometry. Reduction bis(imino)acenaphthene ligands LiAlH4/AlCl3 reagent mix initially produced corresponding 1,2-diamines which, upon ring-closing reaction triethyl orthoformate in acidic solution, gave requisite ionic interme...

Ru-based olefin metathesis catalysts containing carbohydrate-derived NHCs from glucose and galactose were synthesized and characterized by NMR spectroscopy. 2D-NMR spectroscopy revealed the presence of Ru-C (benzylidene) rotamers at RT and the rate of rotation was measured using magnetization transfer and VT-NMR spectroscopy. The catalysts were found to be effective at ring-opening metathesis p...

Silylenes are silicon analogues of carbenes and exist with neutral divalent silicon atoms. The first stable N-heterocyclic silylene (NHSi) was reported byWest et al., in 1994. Since then, many stable NHSis d,3 and other silylenes have been isolated. The reactivity pattern of NHSis is quite comparable with that of the N-heterocyclic carbenes (NHCs), where the latter led to many applications in c...

Replacement of halide from N-(haloboryl)formamidines for the weakly coordinating anion [B(C(6)F(5))(4)](-), using [Et(3)Si(toluene)](+)[B(C(6)F(5))(4)](-), induces a ring closure leading to the cationic four-pi-electron four-membered heterocycles [HC(N-2,6-diisopropylphenyl)(2)BR](+) [R = N(i-Pr)(2), Ph]. Subsequent deprotonation of the B-amino derivative affords the corresponding N-heterocycli...