The chemistry of vinylidene complexes displays a representative example of how highly
reactive, short-lived organic molecules may be effectively stabilized by coordination to …

Although the free allenylidene species: CdCdCH2 was originally identified in 1961 (trapped
in cold matrixes), 1 it is 1976 when the isolation of the first allenylidene complexes [M …

We describe the synthesis of commonly used free N-heterocyclic carbenes (NHCs), 1, 3-bis-
(2, 4, 6-trimethylphenyl) imidazol-2-ylidene (IMes) and 1, 3-bis-(2, 6-diisopropylphenyl) …

The state‐of‐the‐art in olefin metathesis is application of N‐heterocyclic carbene (NHC)‐
containing ruthenium alkylidenes for the formation of internal C= C bonds and of cyclic alkyl …

In 1968, the first metal complexes with N-heterocyclic carbene (NHC) ligands were reported.
1, 2 From this time, many complexes of transition metals both in low and high oxidation …

Ruthenium–indenylidene complexes represent a class of robust and efficient pre-catalysts
for olefin metathesis reactions. In this feature article, we provide an overview of the various …

One of the most important challenges in ruthenium-catalyzed olefin metathesis is to increase
the stability of the catalysts under the reaction conditions without loss of activity.[1] Although …

Two new ruthenium complexes bearing a bidentate (κ2O, C)‐isopropoxy–indenylidene
ligand and a PPh3 (9) or PCy3 (10, Cy= cyclohexyl) ligand have been synthesized and fully …

Ruthenium olefin metathesis is without doubt one of the most thriving fields in modern
synthetic chemistry. Applications in industry and recent developments in basic research …

A cationic ruthenium carbyne complex was prepared and was found to initiate olefin
metathesis reactions with good activities, which throws a new light on the design of a new …