Synthesis of ultra-high purity trialkylgallium MOVPE precursors. Crystal structures of triethylgallium and triisopropylgallium adducts with macrocyclic tertiary amines
- 29 June 2000
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of Materials Chemistry
- Vol. 10 (8) , 1875-1880
- https://doi.org/10.1039/b001937m
Abstract
A synthesis and purification route has been developed for base-free trialkylgallium compounds which avoids the use of traditional ether solvents. The R3Ga compound (R = Et, Pri) is synthesised in triethylamine, NEt3, which leads to the adducts R3Ga(NEt3). The NEt3 ligand can be readily displaced by the addition of low volatility bidentate, tetradentate or hexadentate tertiary amines to give adducts of the type (R3Ga)xL (x = 2, 4, 6), from which base-free R3Ga compounds are obtained by mild thermal dissociation. The synthesis and characterisation of these adducts are described and crystal structures reported for the adducts between R3Ga (R = Et, Pri) and the multidentate macrocyclic amines 1,4,8,11-tetramethyl-1,4,8,11-tetraazacyclotetradecane and 1,4,7,10,13,16-hexamethyl-1,4,7,10,13,16-hexaazacyclooctadecane. These are the first reported structural studies of the Et3Ga and Pri 3Ga molecules in the solid state.Keywords
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