Literature DB >> 25719966

Ammonia synthesis by hydrogenolysis of titanium-nitrogen bonds using proton coupled electron transfer.

Iraklis Pappas1, Paul J Chirik1.   

Abstract

The catalytic hydrogenolysis of the titanium-amide bond in (η(5)-C5Me4SiMe3)2Ti(Cl)NH2 to yield free ammonia is described. The rhodium hydride, (η(5)-C5Me5)(py-Ph)RhH (py-Ph = 2-phenylpyridine), serves as the catalyst and promotes N-H bond formation via hydrogen atom transfer. The N-H bond dissociation free energies of ammonia ligands have also been determined for titanocene and zirconocene complexes and reveal a stark dependence on metal identity and oxidation state. In all cases, the N-H BDFEs of coordinated NH3 decreases by >40 kcal/mol from the value in the free gas phase molecule.

Entities:  

Year:  2015        PMID： 25719966     DOI： 10.1021/jacs.5b01047

Source DB:  PubMed          Journal:  J Am Chem Soc        ISSN： 0002-7863            Impact factor:   15.419


  10 in total

Review 1.  Catalytic N2-to-NH3 (or -N2H4) Conversion by Well-Defined Molecular Coordination Complexes.

Authors:  Matthew J Chalkley; Marcus W Drover; Jonas C Peters
Journal:  Chem Rev       Date:  2020-04-30       Impact factor: 60.622

2.  N-H Bond Dissociation Enthalpies and Facile H Atom Transfers for Early Intermediates of Fe-N2 and Fe-CN Reductions.

Authors:  Jonathan Rittle; Jonas C Peters
Journal:  J Am Chem Soc       Date:  2017-02-17       Impact factor: 15.419

3.  Synthetic Applications of Proton-Coupled Electron Transfer.

Authors:  Emily C Gentry; Robert R Knowles
Journal:  Acc Chem Res       Date:  2016-07-29       Impact factor: 22.384

Review 4.  Insight into the Iron-Molybdenum Cofactor of Nitrogenase from Synthetic Iron Complexes with Sulfur, Carbon, and Hydride Ligands.

Authors:  Ilija Čorić; Patrick L Holland
Journal:  J Am Chem Soc       Date:  2016-06-03       Impact factor: 15.419

5.  Fe-Mediated Nitrogen Fixation with a Metallocene Mediator: Exploring p Ka Effects and Demonstrating Electrocatalysis.

Authors:  Matthew J Chalkley; Trevor J Del Castillo; Benjamin D Matson; Jonas C Peters
Journal:  J Am Chem Soc       Date:  2018-05-02       Impact factor: 15.419

6.  Visible light enables catalytic formation of weak chemical bonds with molecular hydrogen.

Authors:  Yoonsu Park; Sangmin Kim; Lei Tian; Hongyu Zhong; Gregory D Scholes; Paul J Chirik
Journal:  Nat Chem       Date:  2021-07-12       Impact factor: 24.427

7.  Proton-Coupled Electron-Transfer Reactivity Controls Iron versus Sulfur Oxidation in Nonheme Iron-Thiolate Complexes.

Authors:  Jesse B Gordon; Jeremy P McGale; Maxime A Siegler; David P Goldberg
Journal:  Inorg Chem       Date:  2021-04-19       Impact factor: 5.165

8.  Visible-Light-Driven, Iridium-Catalyzed Hydrogen Atom Transfer: Mechanistic Studies, Identification of Intermediates, and Catalyst Improvements.

Authors:  Yoonsu Park; Lei Tian; Sangmin Kim; Tyler P Pabst; Junho Kim; Gregory D Scholes; Paul J Chirik
Journal:  JACS Au       Date:  2022-01-24

9.  Radical Activation of N-H and O-H Bonds at Bismuth(II).

Authors:  Xiuxiu Yang; Edward J Reijerse; Kalishankar Bhattacharyya; Markus Leutzsch; Markus Kochius; Nils Nöthling; Julia Busch; Alexander Schnegg; Alexander A Auer; Josep Cornella
Journal:  J Am Chem Soc       Date:  2022-09-02       Impact factor: 16.383

10.  Catalytic Dinitrogen Reduction to Ammonia at a Triamidoamine-Titanium Complex.

Authors:  Laurence R Doyle; Ashley J Wooles; Lucy C Jenkins; Floriana Tuna; Eric J L McInnes; Stephen T Liddle
Journal:  Angew Chem Int Ed Engl       Date:  2018-04-23       Impact factor: 15.336
  10 in total

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