Synthesis and Characterization of Lewis Base Stabilized Gallium–Tellurium Complexes

Abstract

Complexes of gallium bound to chalcogen elements recently have found importance in synthesis and as single molecular precursors for preparing thin films of gallium chalcogenides for their applications as photo-receivers for visible and near IR region. Herein we report the synthesis and characterization of some Lewis base (LB) stabilized gallium-telluride complexes. Gallium tellurolate complexes of formula, [LB] · [Ga(TePh)₃] _x , [x = 1, LB = 4-dimethylaminopyridine; x = 2, LB = 4,4′-methylene bis(N,N′-dimethylaniline] were prepared by reacting the corresponding Lewis base adduct of gallium(III) iodide and phenyllithium tellurolate. The complexes have been characterized by elemental analyses, ICP-MS, multinuclear NMR, and thermal and mass spectrometry. Such complexes may be potential single-molecular precursors for III–VI electronic materials.

Keywords:

• Gallium-tellurium complexes
• lithium tellurolate
• single molecular precursors

Notes

^a Satisfactory elemental analysis.

^b Uncorrected.

^a IDT; Initial decomposition temperature.

^b FDT; Final decomposition temperature.

D_max; Maximum decomposition temperature.