Issue 4, 2016

Coupling of terminal iridium nitrido complexes


The oxidative coupling of nitride ligands (N3−) to dinitrogen and its microscopic reverse, N2-splitting to nitrides, are important elementary steps in chemical transformations, such as selective ammonia oxidation or nitrogen fixation. Here an experimental and computational evaluation is provided for the homo- and heterocoupling of our previously reported iridium(IV) and iridium(V) nitrides [IrN(PNP)]n (n = 0, +1; PNP = N(CHCHPtBu2)2). All three formal coupling products [(PNP)IrN2Ir(PNP)]n (n = 0–+2) were structurally characterized. While the three coupling reactions are all thermodynamically feasible, homocoupling of [IrN(PNP)]+ is kinetically hindered. The contributing parameters to relative coupling rates are discussed providing qualitative guidelines for the stability of electron rich transition metal nitrides.

Graphical abstract: Coupling of terminal iridium nitrido complexes

Supplementary files

Article information

Article type
Research Article
28 Nov 2015
12 Jan 2016
First published
15 Jan 2016
This article is Open Access
Creative Commons BY license

Inorg. Chem. Front., 2016,3, 469-477

Author version available

Coupling of terminal iridium nitrido complexes

J. Abbenseth, M. Finger, C. Würtele, M. Kasanmascheff and S. Schneider, Inorg. Chem. Front., 2016, 3, 469 DOI: 10.1039/C5QI00267B

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

Read more about how to correctly acknowledge RSC content.

Social activity