(Bu-chains not shown)
CpBIG
Although chemistry with the superbulky ligand Ph5Cp was initiated many years ago, it has never been fully developed for two reasons:
the ligands are extremely bulky. Synthesis of its simple ferrocene is not easily achieved.
all Ph5Cp complexes are extremely ...
Ammonia-Borane (NH3BH3) is one of the most promising materials for chemical storage of H2. It contains nearly 20 wt% of H, is non-toxic and non-flammable. Decomposition into H2 and “BN” materials, however needs forcing conditions (120-500 °C) and is non-reversible.
Recently introduced metal-amido...
Although the early main group metal hydrides (LiH, NaH, CaH2) are well-established reagents, hardly any well-defined molecular hydride complexes are known. This is partly due to the lack of synthetic procedures but also related to their dynamic behaviour and the very high lattice energies of the sal...
Polymerization of styrene proceeds with high stereoselectivity (95% syndiotactic) and is living.
Feil, Knoll, Harder Angew. Chem. 2001
Three good reasons to do catalysis with calcium:
It is cheap (€ 6 / mol!)
It ís biocompatible
It is world-wide available
Representative publicati...
The first calcium carbene complexes with a formal electrostatic "double bond" between a R2C2- unit and Ca2+ have been obtained in the form of a bis(iminophosphorane)-methandiide complex.
Substitution of the Me3Si-substituent for the much larger 2, 6-diisopropylphenyl group results in formation of...
Most enzymes are multimetallic catalysts that cooperate efficiently in order to accomplish their specific tasks. We have developed a variety of bimetallic catalysts that have been tested in the copolymerization of cyclohexene oxide and CO2. The dimeric Zn catalyst for this reaction suffers from a di...
More than 100 years after Victor Grignard, the organometallic chemistry of the heavier alkaline-earth metals (Ca, Sr and Ba) was partly still in a very primitive state. Although Cp-chemistry was well-developed, only few well-stabilized, and therefore relatively unreactive, metal-alkyl complexes were...
