Heterometallic Mg−Ba Hydride Clusters in Hydrogenation Catalysis

@article{Wiesinger2021HeterometallicMH,
  title={Heterometallic Mg−Ba Hydride Clusters in Hydrogenation Catalysis},
  author={Michael Wiesinger and Christian Kn{\"u}pfer and Holger Elsen and Jonathan Mai and Jens Langer and Sjoerd Harder},
  journal={ChemCatChem},
  year={2021},
  volume={13}
}
Reaction of a MgN“2/BaN”2 mixture (N“=N(SiMe3)2) with PhSiH3 gave three unique heterometallic Mg/Ba hydride clusters: Mg5Ba4H11N”7 ⋅ (benzene)2 (1), Mg4Ba7H13N“9 ⋅ (toluene)2 (2) and Mg7Ba12H26N”12 (3). Product formation is controlled by the Mg/Ba ratio and temperature. Crystal structures are described. While 3 is fully insoluble, clusters 1 and 2 retain their structures in aromatic solvents. DFT calculations and AIM analyses indicate highly ionic bonding with Mg−H and Ba−H bond paths. Also… 
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Hydrogenation of imines catalyzed by ruthenium(II) complexes containing phosphorus-nitrogen ligands via hydrogen transfer reaction

References

SHOWING 1-10 OF 87 REFERENCES

Discrete magnesium hydride aggregates: a cationic Mg13H18 cluster stabilized by NNNN-type macrocycles.

Large magnesium hydride aggregates were synthesized stepwise from alkyl complexes [Mg2 (Me3 TACD)R3 ] (R=Et, nBu) and phenylsilane in the presence of additional Mg(II) ions.

Well-defined molecular magnesium hydride clusters: relationship between size and hydrogen-elimination temperature.

DFT calculations on the proposed decomposition product, that is, the low-valence tetranuclear Mg(I) cluster [(NN-Mg2)2], predict a structure with two almost-parallel, localized Mg- Mg bonds.

Simple Access to the Heaviest Alkaline Earth Metal Hydride: A Strongly Reducing Hydrocarbon-Soluble Barium Hydride Cluster.

The heptanuclear cluster Ba7 H7 [N(SiMe3 )2 ]7 is a very strong reducing agent that already at room temperature reacts with Me3 SiCH=CH2, norbornadiene, and ethylene and slowly decomposes to undefined barium hydride species.

Imine hydrogenation with simple alkaline earth metal catalysts

AbstractHydrogenation of unsaturated bonds is dominated by transition metal catalysis. Compared with transition metals, the use of other metals is less explored, especially so for the s-block…

Cationic Magnesium π–Arene Complexes

Reaction of the trityl cation in [Ph3C+][B(C6F5)4–] with the n-butyl anion in (BDI)MgnBu led to s-hydride abstraction and formation of Ph3CH, 1-butene, and [(BDI)Mg+][B(C6F5)4–] (1) (BDI =…

A Simple Route to Calcium and Strontium Hydride Clusters.

The first strontium hydride complex has been obtained by simply treating Sr[N(SiMe3 )2 ]2 with PhSiH3 in the presence of PMDTA with the result that the Sr complex Sr6 H9 crystallizes as an "inverse cryptand", which shows atypically low charges on Ca and H.

Metallic Barium: A Versatile and Efficient Hydrogenation Catalyst

DFT calculations on benzene hydrogenation with a simple model system (Ba/BaH2) confirm that the presence of metallic Ba has an accelerating effect, and a mechanism in which Ba0 and BaH2 are both essential is discussed.

The Nature of the Heavy Alkaline Earth Metal-Hydrogen Bond: Synthesis, Structure, and Reactivity of a Cationic Strontium Hydride Cluster.

DFT studies on the cationic hydride clusters suggest a more pronounced covalent character for strontium compared to calcium, in particular with regard to fast H/D exchange and [SiPh3]- anion decomposition.

Multimetallic Alkaline-Earth Hydride Cations

Reactions of dimeric β-diketiminato (BDI) magnesium and calcium hydrides with [(BDI)Mg]+[Al{OC(CF3)3}4]− provide ionic multimetallic hydride derivatives, which have been characterized by…

Tunable Binding of Dinitrogen to a Series of Heterobimetallic Hydride Complexes

The reaction of [Ru(H)2(N2)2(PCy3)2] (1) with β-diketiminate stabilized hydrides of Al, Zn, and Mg generates a series of new heterobimetallic complexes with either H2 or N2 ligated to the ruthenium…
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