Synthesis and characterization of fluorinated aminoalkoxide and iminoalkoxide gallium complexes: Application in chemical vapor deposition of Ga2O3 thin films
Synthesis and characterization of fluorinated aminoalkoxide and iminoalkoxide gallium complexes: Application in chemical vapor deposition of Ga2O3 thin films
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氟化氨基醇盐和亚氨基醇盐镓配合物的合成和表征：在 Ga2O3 薄膜化学气相沉积中的应用
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发表时间：
2004
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通讯作者：
Gene
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作者：
Y. Chi;Tsung;Yi;Shu;A. Carty;L. Scoles;K. Udachin;S. Peng;Gene
GaCl 3与原位制备的氨基醇盐或亚氨基醇盐的钠盐NaL反应，得到二取代化合物GaL 2Cl，其中L = OC（CF 3）2CH 2NMe 2（1），OC（CF 3）2CH 2C（Me）NMe（2）。单晶X-射线衍射研究1和2表明形成的三角双锥结构与氯和烷氧基占据赤道网站和位于轴向位置的氮供体。对于相关的三甲基镓试剂GaMe 3，加入等量的氨基醇LH诱导甲烷的消除，以高产率得到配合物GaMe 2L，其中L = OC（CF 3）2CH 2NHMe（3），OC（CF 3）2CH 2NHBut（4），OC（CF 3）2CH 2NMe 2（5）. 5的晶体结构由X-射线衍射测定，显示出扭曲的四面体框架，这与在三角双锥Ga配合物1和2中观察到的有很大不同。变温~ 1H NMR研究表明，化合物3和4的N→Ga键发生快速断裂，然后发生断裂。
Gallium trichloride, GaCl3, reacts with the in situ prepared sodium salt of an aminoalkoxide or iminoalkoxide, denoted as NaL, to give the disubstituted compounds GaL2Cl, where L = OC(CF3)2CH2NMe2 (1), OC(CF3)2CH2C(Me)NMe (2). Single-crystal X-ray diffraction studies on 1 and 2 indicated the formation of a trigonal-bipyramidal structure with chloride and alkoxy groups occupying the equatorial sites and the nitrogen donors located at the axial positions. For the related trimethylgallium reagent GaMe3, addition of an equal amount of amino alcohol LH induced the elimination of methane to afford the complexes GaMe2L, where L = OC(CF3)2CH2NHMe (3), OC(CF3)2CH2NHBut (4), OC(CF3)2CH2NMe2 (5), in high yields. The crystal structure of 5 was determined by X-ray diffraction, showing a distorted-tetrahedral framework which differs greatly from that observed in the trigonal-bipyramidal Ga complexes 1 and 2. Variable-temperature 1H NMR studies on 3 and 4 indicated the occurrence of rapid N→Ga bond scission, followed by...