Molybdenum Complexes Supported by PN3 P Pincer Ligands: Synthesis, Characterization, and Application to Synthetic Nitrogen Fixation

2018 ◽  
Vol 2018 (47) ◽  
pp. 5108-5116 ◽  
Author(s):  
Nadja Stucke ◽  
Jan Krahmer ◽  
Christian Näther ◽  
Felix Tuczek
Keyword(s):  
Nitrogen Fixation ◽  
Pincer Ligands ◽  
Molybdenum Complexes

Synthesis and Reactivity of Iron- and Cobalt-Dinitrogen Complexes Bearing PSiP-Type Pincer Ligands toward Nitrogen Fixation

2017 ◽  
Vol 2017 (32) ◽  
pp. 3769-3778 ◽  
Author(s):  
Ryuji Imayoshi ◽  
Kazunari Nakajima ◽  
Jun Takaya ◽  
Nobuharu Iwasawa ◽  
Yoshiaki Nishibayashi
Keyword(s):  
Nitrogen Fixation ◽  
Pincer Ligands ◽  
Dinitrogen Complexes

Development of Catalytic Conversion of Nitrogen Molecule into Ammonia Using Molybdenum Complexes under Ambient Reaction Conditions

2021 ◽  
Author(s):  
Yuya Ashida ◽  
Yoshiaki Nishibayashi
Keyword(s):  
Nitrogen Fixation ◽  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Catalytic Conversion ◽  
Nitrogen Molecule ◽  
Reaction Conditions ◽  
Molybdenum Complexes

Nitrogen fixation using homogeneous transition metal complexes under mild reaction conditions is a challenging topic in the field of chemistry. Several successful examples of the catalytic conversion of nitrogen molecule...

scholarly journals Synthesis and Reactivity of Iron- and Cobalt-Dinitrogen Complexes Bearing PSiP-Type Pincer Ligands toward Nitrogen Fixation

2017 ◽  
Vol 2017 (32) ◽  
pp. 3768-3768 ◽  
Author(s):  
Ryuji Imayoshi ◽  
Kazunari Nakajima ◽  
Jun Takaya ◽  
Nobuharu Iwasawa ◽  
Yoshiaki Nishibayashi
Keyword(s):  
Nitrogen Fixation ◽  
Pincer Ligands ◽  
Dinitrogen Complexes

Effect of substituents on molybdenum triiodide complexes bearing PNP-type pincer ligands toward catalytic nitrogen fixation

2019 ◽  
Vol 48 (10) ◽  
pp. 3182-3186 ◽  
Author(s):  
Takayuki Itabashi ◽  
Ikki Mori ◽  
Kazuya Arashiba ◽  
Aya Eizawa ◽  
Kazunari Nakajima ◽  
...  
Keyword(s):  
Nitrogen Fixation ◽  
Pincer Ligands ◽  
Ammonia Production ◽  
Reaction Conditions ◽  
Effect Of Substituents

Molybdenum triiodide complexes bearing phenyl and ferrocenyl substituted PNP-type pincer ligands acted as more effective catalysts toward ammonia production under ambient reaction conditions.

scholarly journals Ammonia Formation Catalyzed by Dinitrogen-Bridged Dirhenium Complex Bearing PNP-Pincer Ligands under Mild Reaction Conditions

2020 ◽  
Author(s):  
Fanqiang Meng ◽  
Shogo Kuriyama ◽  
Hiromasa Tanaka ◽  
Akihito Egi ◽  
Kazunari Yoshizawa ◽  
...  
Keyword(s):  
Nitrogen Fixation ◽  
Pincer Ligands ◽  
Pincer Ligand ◽  
Reaction Conditions ◽  
Rhenium Atom ◽  
Phosphine Complexes ◽  
Proton Source ◽  
Dinitrogen Complexes ◽  
Dinitrogen Complex ◽  
Ammonia Formation

A series of rhenium complexes bearing a pyridine-based PNP-type pincer ligand are synthesized from rhenium phosphine complexes as precursors. A dinitrogen-bridged dirhenium complex bearing the PNP-type pincer ligands catalytically converts dinitrogen into ammonia in the reaction with KC<sub>8</sub> as a reductant and [HPCy<sub>3</sub>]BAr<sup>F</sup><sub>4</sub> (Cy = cyclohexyl, Ar<sup>F</sup> = 3,5-(CF<sub>3</sub>)<sub>2</sub>C<sub>6</sub>H<sub>3</sub>) as a proton source at –78 °C to afford 8.4 equiv of ammonia based on the rhenium atom of the catalyst. The rhenium-dinitrogen complex also catalyzes silylation of dinitrogen in the reaction with KC<sub>8</sub> as a reductant and Me<sub>3</sub>SiCl as a silylating reagent under ambient reaction conditions to afford 11.3 equiv of tris(trimethylsilyl)amine based on the rhenium atom of the catalyst. These results demonstrate the first successful example of catalytic nitrogen fixation under mild reaction conditions by using rhenium-dinitrogen complexes as catalysts.

scholarly journals Synthesis and characterization of a Nitrogenase-cofactor biomimetic based on molybdenum complexes with a polydentate-N5 ligand.

Bionatura ◽  
2019 ◽  
Vol 4 (3) ◽  
pp. 913-916
Author(s):  
Steven Jiménez-Guailla ◽  
Michelle Chicaiza-Lemus ◽  
Juan Pablo Saucedo-Vázquez
Keyword(s):  
Nitrogen Fixation ◽  
Molecular Nitrogen ◽  
Synthesis And Characterization ◽  
Molybdenum Complexes

Nitrogen fixation is an outstanding process in which atmospheric molecular nitrogen is reduced to ammonia, which is easier to assimilate by the plants. Due to the challenge to understand the nitrogen fixation process in vivo conditions, biomimetic compounds have been synthesized to perform the reduction of nitrogen in softest environments than in the Haber process. Thus, the purpose of this work is the synthesis and characterization of new molybdenum complexes with polydentate nitrogenated ligands and the evaluation of those complexes as possible dinitrogen reductants.

Front Cover: Synthesis and Reactivity of Iron- and Cobalt-Dinitrogen Complexes Bearing PSiP-Type Pincer Ligands toward Nitrogen Fixation (Eur. J. Inorg. Chem. 32/2017)

2017 ◽  
Vol 2017 (32) ◽  
pp. 3767-3767
Author(s):  
Ryuji Imayoshi ◽  
Kazunari Nakajima ◽  
Jun Takaya ◽  
Nobuharu Iwasawa ◽  
Yoshiaki Nishibayashi
Keyword(s):  
Nitrogen Fixation ◽  
Pincer Ligands ◽  
Front Cover ◽  
Dinitrogen Complexes

Preparation and reactivity of iron complexes bearing anionic carbazole-based PNP-type pincer ligands toward catalytic nitrogen fixation

2018 ◽  
Vol 47 (4) ◽  
pp. 1117-1121 ◽  
Author(s):  
Junichi Higuchi ◽  
Shogo Kuriyama ◽  
Aya Eizawa ◽  
Kazuya Arashiba ◽  
Kazunari Nakajima ◽  
...  
Keyword(s):  
Nitrogen Fixation ◽  
Iron Complexes ◽  
Pincer Ligands

Newly prepared iron complexes bearing carbazole-based PNP-type pincer ligands are found to work as catalysts toward nitrogen fixation.

scholarly journals Ammonia Formation Catalyzed by Dinitrogen-Bridged Dirhenium Complex Bearing PNP-Pincer Ligands under Mild Reaction Conditions

2020 ◽  
Author(s):  
Fanqiang Meng ◽  
Shogo Kuriyama ◽  
Hiromasa Tanaka ◽  
Akihito Egi ◽  
Kazunari Yoshizawa ◽  
...  
Keyword(s):  
Nitrogen Fixation ◽  
Pincer Ligands ◽  
Pincer Ligand ◽  
Reaction Conditions ◽  
Rhenium Atom ◽  
Phosphine Complexes ◽  
Proton Source ◽  
Dinitrogen Complexes ◽  
Dinitrogen Complex ◽  
Ammonia Formation

A series of rhenium complexes bearing a pyridine-based PNP-type pincer ligand are synthesized from rhenium phosphine complexes as precursors. A dinitrogen-bridged dirhenium complex bearing the PNP-type pincer ligands catalytically converts dinitrogen into ammonia in the reaction with KC<sub>8</sub> as a reductant and [HPCy<sub>3</sub>]BAr<sup>F</sup><sub>4</sub> (Cy = cyclohexyl, Ar<sup>F</sup> = 3,5-(CF<sub>3</sub>)<sub>2</sub>C<sub>6</sub>H<sub>3</sub>) as a proton source at –78 °C to afford 8.4 equiv of ammonia based on the rhenium atom of the catalyst. The rhenium-dinitrogen complex also catalyzes silylation of dinitrogen in the reaction with KC<sub>8</sub> as a reductant and Me<sub>3</sub>SiCl as a silylating reagent under ambient reaction conditions to afford 11.3 equiv of tris(trimethylsilyl)amine based on the rhenium atom of the catalyst. These results demonstrate the first successful example of catalytic nitrogen fixation under mild reaction conditions by using rhenium-dinitrogen complexes as catalysts.

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