Alkyl, Silyl, and Phosphane Ligands—Classical Ligands in Nonclassical Bonding Modes
- 2 July 2001
- journal article
- research article
- Published by Wiley in Angewandte Chemie International Edition in English
- Vol. 40 (13) , 2427-2433
- https://doi.org/10.1002/1521-3773(20010702)40:13<2427::aid-anie2427>3.0.co;2-t
Abstract
Alkyl, silyl, and phosphane ligands are amongst the most familiar and ubiquitous ligands in organometallic and coordination chemistry. The C, Si, and P donor atoms of these ligands are sp3-hybridized and the ligands are related to each other by the isolobal analogy: (CR3)−(SiR3)−PR3. Herein, we demonstrate that although a number of unusual observations concerning the reactivity and bonding of these ligands appears unrelated at first sight, they in fact provide offer an exiting and consistent picture that may form the basis for new paradigms. The characterization of stable complexes in which alkyl, silyl, and phosphane ligands behave as symmetrical bridges confirms that there is no inherent thermodynamic instability associated with these bonding situations, and, in fact, reactivity studies suggest that these ligands should be able to bridge between metal centers in reaction intermediates or transition states.Keywords
This publication has 97 references indexed in Scilit:
- Ligand Exchange and Alkyl Abstraction Involving (Perfluoroaryl)boranes and -alanes with Aluminum and Gallium AlkylsOrganometallics, 2000
- Structure of the Trimethylaluminum Dimer As Determined by Powder Neutron Diffraction at Low TemperatureOrganometallics, 2000
- Synthesis and Structures of the Crystalline Heavier Alkali Metal Alkyls: X-ray Structures of [K(μ-R){O(Me)But}]∞, [(pmdeta)K(μ-R)K(μ-R)2K(μ-R)K(pmdeta)], and [Cs(μ-R)(tmeda)]∞ (R = CH(SiMe3)2)Organometallics, 2000
- Skeletal Isomerism in Transition Metal ClustersPublished by Wiley ,1999
- Reversible Skeletal Rearrangements in Transition Metal ClustersPublished by Wiley ,1999
- Neutron Diffraction Study of [Nd(AlMe4)3]⋅0.5 Al2Me6 at 100 K: The First Detailed Look at a Bridging Methyl Group with a Trigonal-Bipyramidal Carbon AtomAngewandte Chemie International Edition in English, 1998
- Neutronenbeugung an [Nd(AlMe4)3]⋅0.5 Al2Me6 bei 100 K: ein erster detaillierter Blick auf eine verbrückende Methylgruppe mit trigonal-bipyramidalem KohlenstoffatomAngewandte Chemie, 1998
- Cluster core isomerization from planar to tetrahedral: experimental and theoretical aspects. Steric control by the ligands of cluster geometry. Synthesis and crystal structure of [Pt2Mo2(.eta.-C5H4CH3)2(CO)6(PCy3)2]Journal of the American Chemical Society, 1991
- Carbon‐Hydrogen‐Transition Metal BondsPublished by Wiley ,1988
- Bridged hydrocarbyl or hydrocarbon binuclear transition metal complexes: classification, structures, and chemistryChemical Reviews, 1983