Synthesis, Structure, and Properties of Volatile Lanthanide Dialkyltriazenides

Abstract

Several dialkyltriazenide complexes of the lanthanide elements neodymium, europium, and erbium have been prepared; these include the homoleptic complex Er(Bu t N 3 Bu t ) 3 , the tetrahydrofuran monoadducts Ln(Bu t N 3 Bu t ) 3 (THF) where Ln = Nd or Eu, and the lithium salts [Li(THF)][Ln(MeN 3 Bu t ) 4 ] where Ln = Eu or Er. Crystal structures, nuclear magnetic resonance data, and infrared data are reported for all complexes. The di-tert-butyltriazenide complexes are thermally stable, sublime at reasonably low temperatures, and show smooth volatilization without decomposition, which make them potentially useful in lanthanide separation processes and as chemical vapor deposition precursors for lanthanide nitrides and other phases.

Syntheses and Characterization of Ti(III)/Ti(IV) Triazenido Complexes

“…A triazenido metal complex can be synthesized in different ways, either by deprotonation of a triazene, [3,4] by salt‐metathesis reaction with a triazenido anion [4] or via insertion of an organic azide into a metal‐alkyl [8] or metal‐hydride [9] bond. As demonstrated by very recent works on main group elements, [10] lanthanides [11] and late transition metal complexes, [12] triazenido ligands are an emerging class of ligands and of current interest. Regarding group IV metals, an early example of a triazenido complex was reported by Hillhouse et al., specifically the Cp* 2 HfH(NHNNPh) complex via insertion of phenyl azide into the Hf−H bond [9] .…”

Synthesis, characterisation and reactivity of a zinc triazenide for potential use in vapour deposition

“…24,26 During our studies, volatile and thermally stable lanthanide dialkyltriazenides have also been reported. 30 With the success of the triazenide ligand to produce volatile and thermally stable metal compounds, we decided to investigate its reactivity with divalent Zn. Herein, we report the synthesis, structure, and thermal properties of a Zn(II) triazenide and its reactivity with sterically bulky thiols that mimic a ZnS surface.…”