Crystal structures of [IrCl₂(NHCHPh)((dppm)(C(N₂dppm))-κ³ P,C,P′)]Cl·5.5MeCN and [IrI(NHCHPh)(((dppm)C(N₂))-κ² P,C)(dppm-κ² P,P′)]I(I₃)·0.5I₂·MeOH·0.5CH₂Cl₂: triazene fragmentation in a PCN pincer iridium complex

Abstract

In this communication, two compounds and their respective crystal structures, obtained via fragmentation of the triazene moiety in a PCN pincer iridium complex, are discussed. One showcases a novel (dppm)C(N2dppm) PCP pincer, the other contains a (dppm)C(N2) diazo­methyl­ene­phospho­rane moiety.

The Staudinger Ligation

“…The entries are organized by number of carbon atoms of the phosphane (and then grouped by publication), and it will cover examples up to beginning of 2020 (for not or only partly covered examples, see refs − ).…”

Facial vs. Meridional Coordination Modes in ReI Tricarbonyl Complexes with a Carbodiphosphorane‐based Tridentate Ligand

“…The incorporation of CDPs and related groups in pincer‐type ligands led to the development of highly active catalysts for cross coupling reactions, [17,18] hydroamination and ‐arylation reactions [19–21] . Moreover, the two terminal binding sites of the pincer platform, often tertiary phosphines, enable the stabilization of lower oxidation states that result in electron rich transition metal complexes [12,14,30–32,22–29] …”

“…[19][20][21] Moreover, the two terminal binding sites of the pincer platform, often tertiary phosphines, enable the stabilization of lower oxidation states that result in electron rich transition metal complexes. [12,14,[30][31][32][22][23][24][25][26][27][28][29] One of the first CDP transition metal complexes was the rhenium(VII) complex [({Ph 3 P} 2 C)ReO 3 ] + reported by Sundermeyer and co-workers. [15] In their study, the authors clearly demonstrated that CDPs are capable of stabilizing transition metal centers in high oxidation states.…”