We report on the convenient synthesis of a CNC pincer ligand com¬po-sed of car¬ba¬zole and two mesoionic carbenes, as well as the corresponding lithium- and magnesium complexes. Mono-deprotonation affords a...

We report the syntheses of two rigid mesoionic carbene (MIC) ligands with a carbazole backbone via an intramolecular Finkelstein-Cyclisation cascade and investigate their coordination behavior towards nickel(II) acetate. Despite the...

Reaction between a carbazole-based mesoionic carbene ligand and manganese(II) iodide results in the formation of a rare air stable manganese(IV) complex after aerobic workup. Cyclic voltammetry reveals the complex to...

A new route to heterobimetallic lanthanide–coinage-metal complexes is disclosed. The selective insertion of organic substrates such as phenyl iso(thio)cyanate into the La–P bond of the primary phosphido complex (PN) 2 La(PHMes) ( 1 ) (with PN – = ( N -(2-(diisopropylphosphanyl)-4-methylphenyl)-2,4,6-trimethylanilide) yields the phospha(thio)ureate complexes (PN) 2 La(OC(NPh)(PHMes)) ( 2 ) and (PN) 2 La(SC(NPh)(PHMes)) ( 3 ) with retention of the P H protons. Subsequent deprotonation of the phosphaureate complex 2 with potassium hexamethyldisilazide (KHMDS, K[N(SiMe 3 ) 2 ]) leads to the polymeric complex [K{(PN) 2 La(OC(NPh)(PMes))}] n ( 4 ). Complex 4 was found to be an excellent precursor for salt metathesis reactions with copper(I) and gold(I) chlorides supported by an N-heterocyclic carbene (NHC, 5 and 6 ) or a cyclic alkyl amino carbene (CAAC, 7 and 8 ). This resulted in the unprecedented formation of heterobimetallic lanthanum–coinage-metal complexes, containing the first example of a μ,κ 2 ( O , N ):κ 1 ( P )-phosphaureate bridging ligand. For an alternative route to complex 8 a direct protonolysis protocol between a new basic gold(I) precursor, namely ( Me CAAC)Au(HMDS) , and 2 was also investigated. The complexes have been characterized by multinuclear NMR spectroscopy, IR spectroscopy, and X-ray crystallography (except for 8 ).