Thursday, February 28, 2013

High Catalytic Rates forHydrogen Production UsingNickel Electrocatalysts with Seven-Membered Cyclic Diphosphine LigandsContaining One Pendant Amine

High Catalytic Rates for
Hydrogen Production Using
Nickel Electrocatalysts with Seven-Membered Cyclic Diphosphine Ligands
Containing One Pendant Amine
:
TOC Graphic
Journal of the American Chemical Society
DOI: 10.1021/ja400181a

Acid-Induced Mechanism Change and Overpotential Decreasein Dioxygen Reduction Catalysis with a Dinuclear Copper Complex

Acid-Induced Mechanism Change and Overpotential Decrease
in Dioxygen Reduction Catalysis with a Dinuclear Copper Complex
:
TOC Graphic
Journal of the American Chemical Society
DOI: 10.1021/ja312256u

High Catalytic Rates forHydrogen Production UsingNickel Electrocatalysts with Seven-Membered Cyclic Diphosphine LigandsContaining One Pendant Amine

High Catalytic Rates for
Hydrogen Production Using
Nickel Electrocatalysts with Seven-Membered Cyclic Diphosphine Ligands
Containing One Pendant Amine
:
TOC Graphic
Journal of the American Chemical Society
DOI: 10.1021/ja400181a

A Metal–Metal Bond in the Light-Induced Stateof [NiFe] Hydrogenases with Relevance to Hydrogen Evolution

A Metal–Metal Bond in the Light-Induced State
of [NiFe] Hydrogenases with Relevance to Hydrogen Evolution
:
TOC Graphic
Journal of the American Chemical Society
DOI: 10.1021/ja3115899

Metal-Free Hydrogenation of N-BasedHeterocycles

Metal-Free Hydrogenation of N-Based
Heterocycles
:
TOC Graphic
Organometallics
DOI: 10.1021/om4000727

Tuesday, February 26, 2013

Low OxidationState Iron(0), Iron(I), and Ruthenium(0) Dinitrogen Complexes witha Very Bulky Neutral Phosphine Ligand

Low Oxidation
State Iron(0), Iron(I), and Ruthenium(0) Dinitrogen Complexes with
a Very Bulky Neutral Phosphine Ligand
:
TOC Graphic
Inorganic Chemistry
DOI: 10.1021/ic3024953

Bio-Inspired Catalytic Imine Reduction by Rhodium Complexes with Tethered Hantzsch Pyridinium Groups: Evidence for Direct Hydride Transfer from Dihydropyridine to Metal-Activated Substrate

Bio-Inspired Catalytic Imine Reduction by Rhodium Complexes with Tethered Hantzsch Pyridinium Groups: Evidence for Direct Hydride Transfer from Dihydropyridine to Metal-Activated Substrate: Thumbnail image of graphical abstract
Inspired by Nature: A conceptually new design for a catalyst, combining a metal center abutted to an organic hydride donor, is demonstrated for the formate-driven transfer hydrogenation of imines under ambient conditions. A key step, transfer of hydride from the organohydride donor to the metal-polarized substrate, mirrors that in metallo-(de)hydrogenase enzymes.

Intermolecular β-HydrogenAbstraction in Ytterbium, Calcium, and Potassium Tris(dimethylsilyl)methylCompounds

Intermolecular β-Hydrogen
Abstraction in Ytterbium, Calcium, and Potassium Tris(dimethylsilyl)methyl
Compounds
:
TOC Graphic
Organometallics
DOI: 10.1021/om3010299

Thursday, February 21, 2013

Isolation and X-ray Crystal Structures of Triarylphosphine Radical Cations

Isolation and X-ray Crystal Structures of Triarylphosphine Radical Cations:
TOC Graphic
Journal of the American Chemical Society
DOI: 10.1021/ja4012113

Migration Insertion Polymerization (MIP) of Cyclopentadienyldicarbonyldiphenylphosphinopropyliron(FpP): A New Concept for Main Chain Metal-Containing Polymers (MCPs)

Migration Insertion Polymerization (MIP) of Cyclopentadienyldicarbonyldiphenylphosphinopropyliron
(FpP): A New Concept for Main Chain Metal-Containing Polymers (MCPs)
:
TOC Graphic
Journal of the American Chemical Society
DOI: 10.1021/ja400755e

An iron complex with pendent amines as a molecular electrocatalyst for oxidation of hydrogen

An iron complex with pendent amines as a molecular electrocatalyst for oxidation of hydrogen:

Nature Chemistry.
doi:10.1038/nchem.1571

Authors: Tianbiao Liu, Daniel L. DuBois & R. Morris Bullock
Electricity can be produced by the oxidation of hydrogen in fuel cells, but the best catalyst for this is platinum, a precious metal of low abundance. Now a molecular complex of iron, a very abundant, inexpensive metal, has been rationally designed for the oxidation of H2 at room temperature.

An iron complex with pendent amines as a molecular electrocatalyst for oxidation of hydrogen

An iron complex with pendent amines as a molecular electrocatalyst for oxidation of hydrogen:

Nature Chemistry 5, 228 (2013).
doi:10.1038/nchem.1571

Authors: Tianbiao Liu, Daniel L. DuBois & R. Morris Bullock
Electricity can be produced by the oxidation of hydrogen in fuel cells, but the best catalyst for this is platinum, a precious metal of low abundance. Now a molecular complex of iron, a very abundant, inexpensive metal, has been rationally designed for the oxidation of H2 at room temperature.

Tuesday, February 19, 2013

Iron-Catalyzed, Atom-Economical, Chemo- and Regioselective Alkene Hydroboration with Pinacolborane

Iron-Catalyzed, Atom-Economical, Chemo- and Regioselective Alkene Hydroboration with Pinacolborane: Thumbnail image of graphical abstract
Precious iron: A new PNN iron complex has been developed for use in an iron-catalyzed alkene hydroboration reaction under mild conditions. The environmentally friendly and earth-abundant iron catalyst system is superior to precious-metal systems in terms of efficiency and selectivity for α-olefin hydroborations with pinacolborane.

Efficient Oxidation of Methane to Methanol by Dioxygen Mediated by Tricopper Clusters

Efficient Oxidation of Methane to Methanol by Dioxygen Mediated by Tricopper Clusters: Thumbnail image of graphical abstract
TONs of copper fun: There is considerable interest in developing catalysts to harness the abundant natural supply of methane for various industrial applications. Two tricopper complexes capable of mediating efficient oxidation of methane to methanol under ambient conditions were tested: a biomimetic tricopper complex (see figure) and a tricopper-peptide species derived from the particulate methane monooxygenase (pMMO) protein.

Sunday, February 10, 2013

Activation of CO2 by phosphinoamide hafnium complexes

Activation of CO2 by phosphinoamide hafnium complexes:
Chem. Commun., 2013, Advance Article
DOI: 10.1039/C3CC38286A, Communication
Michael J. Sgro, Douglas W. Stephan
Hf-phosphinoamide cation complexes behave as metal-based frustrated Lewis pairs and bind one or two equivalent of CO2 and in as well can activate CO2 in a bimetallic fashion to give a pseudo-tetrahedral P2CO2 fragment linking two Hf centres.
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