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Methyl Complexes (methyl + complex)

Distribution by Scientific Domains
Chemistry100%

Selected Abstracts

Reduction of Transition-Metal-Coordinated Carbon Monoxide by a Rare-Earth Hydride Cluster: Isolation of Well-Defined Heteromultimetallic Oxycarbene, Oxymethyl, Carbene, and Methyl Complexes,

ANGEWANDTE CHEMIE, Issue 42 2009
Yasumasa Takenaka Dr.
Der vierkernige Yttrium-Polyhydrid-Komplex 1 reduziert koordiniertes CO in Übergangsmetallkomplexen unter Bildung neuartiger Oxycarben-, Oxymethyl-, Carbenoxo- und Methyloxo-Heterometallkomplexe (siehe Schema). Das Reaktionsmuster hängt von der Art der Übergangsmetallcarbonylkomplexe ab. [source]

Diastereomeric Halfsandwich Rhenium Complexes Containing Hemilabile Phosphane Ligands

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, Issue 24 2004
Stefan Dilsky
Abstract The syntheses and some typical reactions of diastereomeric rhenium complexes [CpRe(NO)(CO){P(Ph)(R)(R,)}]BF4 (R = Me, Ph; R, = 2-C6H4OMe, CH2C4H3S, CH2C4H7O) (3a,e) are described. Reduction of the carbonyl ligand with NaBH4 in THF gave the corresponding methyl complexes [CpRe(NO){P(Ph)(R)(R,)}(CH3)] (4a,e). Acid treatment of the methyl complexes leads to liberation of methane and coordination of the additional donor site of the potentially bidentate phosphane ligand. Of the chelate complexes 5a,e, those with R, = 2-C6H4OMe (5a, d) decomposed in solution at room temperature. In donor solvents, the chelate ring opens giving the stable solvated complexes [CpRe(NO){P(Ph)(R)(R,)}](solvent)]BF4 (solvent = CH3CN, THF) (6b,e, 7d). The new compounds are thus suitable starting materials for the syntheses of diastereomeric rhenium complexes [CpRe(NO){P(Ph)(R)(R,)}(L)]BF4. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004) [source]

Facile Cyclometalation Reactions of Cp,Zirconium Complexes with Weakly Lewis Acidic Pendent Boron Functionalities

CHEMISTRY - A EUROPEAN JOURNAL, Issue 33 2009
Marion Emmert Dipl.-Chem.
Intramolecular hydroboration: Representative examples of Group,4 metallocene methyl complexes, including their synthesis, structure, and reactivity are discussed. The figure shows the thermolysis of the tethered bifunctional Zr/B compound 1, which results in the formation of "tucked-in" complex 2 with loss of MeBBN. [source]

Bis(trimethylsilyl)methyl Derivatives of Calcium, Strontium and Barium: Potentially Useful Dialkyls of the Heavy Alkaline Earth Elements

CHEMISTRY - A EUROPEAN JOURNAL, Issue 36 2008

Getting a complex! Dialkyls of the heavier Group,2 elements Ca, Sr and Ba (see figure) are simple to synthesise with careful selection of the correct alkyl ligand and reaction conditions. The crystal structures of three bis(trimethylsilyl)methyl complexes are reported, and contain the first unsupported Sr- and Ba-to-alkyl carbon bonds. [source]