Metal–Metal Bonding in Bridging Hydride and Alkyl Compounds

Parkin, Gerard

doi:10.1007/978-3-642-05243-9_4

Cited by 26 publications

(16 citation statements)

References 108 publications

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“… The half arrow counting method predicts an 18‐electron count for the molybdenum atoms of the two dimolybdenum complexes shown above (refs , , ). It also predicts single and double Mo−Mo bonds.…”

Section: Synthesis and Structures: A Systematic Overview Of D‐block Ementioning

confidence: 99%

“…This section will deal with homo‐ and some heterobimetallic complexes of transition metals with bridging methyl ligands. Some excellent reviews and book chapters have focused on this topic, some considering the metal–metal bonding of the bridging methyl compounds and the nature of the bridging ligands as three‐center two‐electron bonds …”

Section: Synthesis and Structures: A Systematic Overview Of D‐block Ementioning

confidence: 99%

“…The effect of the bridging ligand on the nature of the metal–metal bond and the bond order has been studied in detail by Baik, Frieser, and Parkin using dimolybdenum complexes . According to their analysis, the resulting effect of a bridging methyl (or H) ligand can be seen as the protonation of one of the metal–metal bonds.…”

Section: Synthesis and Structures: A Systematic Overview Of D‐block Ementioning

confidence: 99%

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Methyl Complexes of the Transition Metals

Campos

López‐Serrano

Peloso

et al. 2016

Chemistry A European J

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Organometallic chemistry can be considered as a wide area of knowledge that combines concepts of classic organic chemistry, i.e. based essentially on carbon, with molecular inorganic chemistry, especially with coordination compounds. Transition metal methyl complexes probably represent the simplest and most fundamental way to view how these two major areas of chemistry combine and merge into novel species with intriguing features in terms of reactivity, structure, and bonding. Citing more than 500 bibliographic references, this review aims to offer a concise view of recent advances in the field of transition metal complexes containing M-CH3 fragments. Taking into account the impressive amount of data that are continuously provided by organometallic chemists in this area, this review is mainly focused on results of the last 5 years. After a panoramic overview on M-CH3 compounds of groups 3 to 11 which includes the most recent landmark findings in this area, two further sections are dedicated to methyl-bridged complexes and reactivity.

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Section: Synthesis and Structures: A Systematic Overview Of D‐block Ementioning

confidence: 99%

Section: Synthesis and Structures: A Systematic Overview Of D‐block Ementioning

confidence: 99%

Section: Synthesis and Structures: A Systematic Overview Of D‐block Ementioning

confidence: 99%

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Methyl Complexes of the Transition Metals

Campos

López‐Serrano

Peloso

et al. 2016

Chemistry A European J

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“…Herein we survey the known heterobimetallic complexes of transition metal and main group hydrides (M = Mg, Zn, Al, Ga). The coordination chemistry of heterobimetallic transition metal hydrides, 20 – 22 and of Al, Ga, In and Zn-based ligands at transition metal centre have been summarised previously. 23 – 26 To focus the discourse, a loose definition ‘heterobimetallic hydride complexes’ is employed.…”

Section: Introductionmentioning

confidence: 99%

Magnesium, zinc, aluminium and gallium hydride complexes of the transition metals

Butler

Crimmin

2017

Chem. Commun.

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“…Consistent with a two-electron mixed-valent formulation, the M–M bond of structure C is polarized to a similar extent as that of the M–M bond in A (Rh a /Rh b = 42.6:57.4), consistent with the bonding predictions of the covalent bond classification for a dative covalent bond between the Rh centers. 49 , 50 …”

Section: Resultsmentioning

confidence: 99%

Photocrystallographic Observation of Halide-Bridged Intermediates in Halogen Photoeliminations

et al. 2014

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Polynuclear transition metal complexes, which frequently constitute the active sites of both biological and chemical catalysts, provide access to unique chemical transformations that are derived from metal–metal cooperation. Reductive elimination via ligand-bridged binuclear intermediates from bimetallic cores is one mechanism by which metals may cooperate during catalysis. We have established families of Rh2 complexes that participate in HX-splitting photocatalysis in which metal–metal cooperation is credited with the ability to achieve multielectron photochemical reactions in preference to single-electron transformations. Nanosecond-resolved transient absorption spectroscopy, steady-state photocrystallography, and computational modeling have allowed direct observation and characterization of Cl-bridged intermediates (intramolecular analogues of classical ligand-bridged intermediates in binuclear eliminations) in halogen elimination reactions. On the basis of these observations, a new class of Rh2 complexes, supported by CO ligands, has been prepared, allowing for the isolation and independent characterization of the proposed halide-bridged intermediates. Direct observation of halide-bridged structures establishes binuclear reductive elimination as a viable mechanism for photogenerating energetic bonds.

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Metal–Metal Bonding in Bridging Hydride and Alkyl Compounds

Cited by 26 publications

References 108 publications

Methyl Complexes of the Transition Metals

Methyl Complexes of the Transition Metals

Magnesium, zinc, aluminium and gallium hydride complexes of the transition metals

Photocrystallographic Observation of Halide-Bridged Intermediates in Halogen Photoeliminations

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