The chemistry of heterocyclic carbenes has experienced a rapid development over the last years. In addition to the imidazolin-2-ylidenes, a large number of cyclic diaminocarbenes with different ring sizes have been described. Aside from diaminocarbenes, P-heterocyclic carbenes, and derivatives with only one, or even no heteroatom within the carbene ring are known. New methods for the synthesis of complexes with N-heterocyclic carbene ligands such as the oxidative addition or the metal atom template controlled cyclization of β-functionalized isocyanides have been developed recently. This review summarizes the new developments regarding the synthesis of N-heterocyclic carbenes and their metal complexes.

Heterocyclic Carbenes: Synthesis and Coordination Chemistry

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Advances in transition metal (Pd, Ni, Fe)-catalyzed cross-coupling reactions using alkyl-organometallics as reaction partners.

1,2-Amino Alcohols and Their Heterocyclic Derivatives as Chiral Auxiliaries in Asymmetric Synthesis

The Chemistry of Neutron Capture Therapy.

Surveillance for dental caries, dental sealants, tooth retention, edentulism, and enamel fluorosis : United States, 1988-1994 and 1909-2002

Molecular structure of dicyclopentadienyltetracarbonyldimolybdenum(Mo.tplbond.Mo). Semibridging carbonyls as four-electron donors in complexes with metal-metal multiple bonds

Synthesis, reactivity, and molecular structure of cyclopentadienylmolybdenum dicarbonyl dimer. Molybdenum-molybdenum triple bond

In this paper, the authors report that the electronic and steric demands of the hydridotris(pyrazolyl)borate (Tp) ligand also promotes facile migratory CO insertion and decarbonylations to give eta/sup 2/-acyl complexes. The structures of these complexes and two phosphine adducts are presented, and the bonding of the eta/sup 2/-acyl group to d/sup 4/ L/sub 4/M fragments is discussed with the aid of EHMO calculations.

Synthetic, structural, and theoretical studies of .eta.2-acyl complexes of molybdenum

The Crystal and Molecular Structure of Bis(cyclopentadienyldicarbonylchromium) (CrCr)

Mn(SALADHP) 2 •2DMF cristallise dans le systeme monoclinique, groupe d'espace P2 1 /a et sa structure est affinee jusqu'a R=0,076

William M. Butler

Papers

Molecular structure of dicyclopentadienyltetracarbonyldimolybdenum(Mo.tplbond.Mo). Semibridging carbonyls as four-electron donors in complexes with metal-metal multiple bonds

Synthesis, reactivity, and molecular structure of cyclopentadienylmolybdenum dicarbonyl dimer. Molybdenum-molybdenum triple bond

Synthetic, structural, and theoretical studies of .eta.2-acyl complexes of molybdenum

The Crystal and Molecular Structure of Bis(cyclopentadienyldicarbonylchromium) (CrCr)

Mononuclear manganese(IV) complexes of hydroxyl-rich Schiff base ligands