Direct Transformation of Molecular Dinitrogen into Ammonia Catalyzed by Cobalt Dinitrogen Complexes Bearing Anionic PNP Pincer Ligands

Shogo Kuriyama; Kazuya Arashiba; Hiromasa Tanaka; Yuki Matsuo; Kazunari Nakajima; Kazunari Yoshizawa; Yoshiaki Nishibayashi

doi:10.1002/anie.201606090

Direct Transformation of Molecular Dinitrogen into Ammonia Catalyzed by Cobalt Dinitrogen Complexes Bearing Anionic PNP Pincer Ligands

Angew Chem Int Ed Engl. 2016 Nov 7;55(46):14291-14295. doi: 10.1002/anie.201606090. Epub 2016 Aug 16.

Authors

Shogo Kuriyama¹, Kazuya Arashiba¹, Hiromasa Tanaka^{2

3}, Yuki Matsuo^{2

3}, Kazunari Nakajima¹, Kazunari Yoshizawa^{4

5}, Yoshiaki Nishibayashi⁶

Affiliations

¹ Department of Systems Innovation, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan.
² Institute for Materials Chemistry and Engineering, Kyushu University, Nishi-ku, Fukuoka, 819-0395, Japan.
³ Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Nishikyo-ku, Kyoto, 615-8520, Japan.
⁴ Institute for Materials Chemistry and Engineering, Kyushu University, Nishi-ku, Fukuoka, 819-0395, Japan. kazunari@ms.ifoc.kyushu-u.ac.jp.
⁵ Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Nishikyo-ku, Kyoto, 615-8520, Japan. kazunari@ms.ifoc.kyushu-u.ac.jp.
⁶ Department of Systems Innovation, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan. ynishiba@sys.t.u-tokyo.ac.jp.

PMID: 27529617
DOI: 10.1002/anie.201606090

Abstract

The direct formation of ammonia from molecular dinitrogen under mild reaction conditions was achieved by using new cobalt dinitrogen complexes bearing an anionic PNP-type pincer ligand. Up to 15.9 equivalents of ammonia were produced based on the amount of catalyst together with 1.0 equivalent of hydrazine (17.9 equiv of fixed nitrogen atoms).

Keywords: ammonia; catalysis; cobalt; dinitrogen; pincer ligands.

Publication types

Research Support, Non-U.S. Gov't