Influence of Groundwater Constituents on Longevity of Iron-Based Permeable Barriers

2002 ◽  
Author(s):  
A. L. Roberts ◽  
William P. Ball ◽  
Peter Searson ◽  
Howard Fairbrother ◽  
Peter J. Vikesland
Keyword(s):  
Permeable Barriers ◽  
Iron Based

Magnetic Circular X-Ray Dichroism at the Ce LII,IIIEdges in Ferromagnetic Iron Based Intei metallic

1997 ◽  
Vol 7 (C2) ◽  
pp. C2-439-C2-440
Author(s):  
O. Isnard ◽  
S. Miraglia ◽  
Ch. Giorgetti ◽  
F. Baudelet ◽  
E. Dartyge ◽  
...  
Keyword(s):  
X Ray ◽  
Iron Based ◽  
Ferromagnetic Iron

An Iron-Based Catalyst Enables The Enantioconvergent Synthesis of Chiral 1,1-Diarylalkanes Through a Suzuki-Miyaura Cross-Coupling Reaction

2020 ◽  
Author(s):  
Chet Tyrol ◽  
Nang Yone ◽  
Connor Gallin ◽  
Jeffery Byers
Keyword(s):  
Coupling Reaction ◽  
Cross Coupling ◽  
Coupling Reactions ◽  
Radical Intermediates ◽  
Cross Coupling Reactions ◽  
Cross Coupling Reaction ◽  
Boronic Esters ◽  
Carbon Centered Radical ◽  
Iron Based ◽  
High Yields

By using an iron-based catalyst, access to enantioenriched 1,1-diarylakanes was enabled through an enantioselective Suzuki-Miyaura crosscoupling reaction. The combination of a chiral cyanobis(oxazoline) ligand framework and 1,3,5-trimethoxybenzene additive were essential to afford high yields and enantioselectivities in cross-coupling reactions between unactivated aryl boronic esters and a variety of benzylic chlorides, including challenging ortho-substituted benzylic chloride substrates. Mechanistic investigations implicate a stereoconvergent pathway involving carbon-centered radical intermediates.

Access to Fe(II) Bis(σ-B-H) Aminoborane Complexes via Protonation of a Borohydride Complex and Dehydrogenation of Amine-Boranes

2019 ◽  
Author(s):  
Nikolaus Gorgas ◽  
Berthold Stöger ◽  
Luis F. Veiros ◽  
Karl Kirchner
Keyword(s):  
Structural Characterization ◽  
Ammonium Salts ◽  
Iron Based ◽  
Amine Boranes

We report on the first synthesis and structural characterization of the iron based aminoborane complexes. These species are formed upon protonation of a borohydride complex by ammonium salts.<br>

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