Synthesis and crystal structures of trimethylindium adducts with bidentate and macrocyclic tertiary amines
作者:Kathleen M. Coward、Anthony C. Jones、Alexander Steiner、Jamie F. Bickley、Lesley M. Smith、Martyn E. Pemble
DOI:10.1039/b008600m
日期:——
The structures of trimethylindium (Me3In) adducts with the bidentate tertiary amine N,N,N′,N′-tetramethyl-4,4′-methylenebis(aniline)[MBDA] and the macrocyclic amines 1,4,8,11-tetramethyl-1,4,8,11-tetraazacyclotetradecane [N4-aza crown] and 1,4,7,10,13,16-hexamethyl-1,4,7,10,13,16-hexaazacyclooctadecane [N6-aza crown] have been determined by single crystal X-ray diffraction. The adducts have the following stoichiometries, Me3In·2MBDA 1, 2Me3In·MBDA 2, 4Me3In·N4-aza crown 3 and 6Me3In·N6-aza crown 4. Compound 1 contains five-coordinate Me3In in a trigonal bipyramidal configuration and displays the longest In–N bond lengths yet reported (2.720(4), 2.865 Å); 2–4 contain four-coordinate Me3In molecules in a tetrahedral configuration. Compounds 1–4 can be used as intermediate adducts in the adduct purification of Me3In for use in the MOVPE (metal organic vapour phase epitaxy) of InP and related III–V semiconductors.
三甲基铟(Me3In)与双齿叔胺N,N,N',N'-四甲基-4,4'-亚甲基双(苯胺)[MBDA]以及大环胺1,4,8,11-四甲基-1,4,8,11-四氮杂环十四烷[N4-氮杂冠]和1,4,7,10,13,16-六甲基-1,4,7,10,13,16-六氮杂环十八烷[N6-氮杂冠]的加合物的结构已通过单晶X射线衍射确定。这些加合物的化学计量比分别为Me3In·2MBDA 1、2Me3In·MBDA 2、4Me3In·N4-氮杂冠 3和6Me3In·N6-氮杂冠 4。化合物1包含五配位的Me3In,呈三角双锥构型,并显示出迄今为止报道的最长的In–N键长(2.720(4)、2.865 Å);2–4包含四面体构型的四配位Me3In分子。化合物1–4可作为Me3In加合物纯化过程中的中间加合物,用于InP和相关III–V族半导体的MOVPE(金属有机气相外延)工艺。