Synthesis and Characterization of Fluorinated β‐Ketoiminate Zinc Precursors and Their Utility in the AP‐MOCVD Growth of ZnO:F
作者:Samuel D. Cosham、Gabriele Kociok‐Köhn、Andrew L. Johnson、Jeff A. Hamilton、Michael S. Hill、Kieran C. Molloy、Rémi Castaing
DOI:10.1002/ejic.201500536
日期:2015.9
A novelfamily of zinc bis beta-ketoiminate complexes 2b-2h have been synthesized by reaction of the isolated free ligands (1a-h) with dimethylzinc. The isolated zinc complexes were characterized by elemental analysis, NMR spectroscopy, and in the case of 2b-d and 2f-h, the molecular structures of the complexes were determined by single crystal X-ray diffraction which reveals the compounds to be pseudo-octahedral
Synthesis, Structure and Chemical Vapour Deposition Studies on the Group 13 Complexes [Me
<sub>2</sub>
M{tfacnac}] [M = Al, Ga, In; Htfacnac = F
<sub>3</sub>
CC(OH)CHC(CH
<sub>3</sub>
)NCH
<sub>2</sub>
CH
<sub>2</sub>
OCH
<sub>3</sub>
]
作者:Samuel D. Cosham、Jeff A. Hamilton、Michael S. Hill、Andrew L. Johnson、Kieran C. Molloy
DOI:10.1002/ejic.201600023
日期:2016.4
revealed them to be monomeric five-coordinate complexes with coordination of the pendent ether-bearing lariat in the solid state. Thermogravimetric analysis showed complexes 2–4 all to have residual masses at 200 °C of 2.4 % or less, well below the value for the respective metaloxides, and vapour pressure measurements showed the indium complex 4 to be an order of magnitude less volatile (0.09 Torr at 80
通式 [Me2MMeC(O)CHC(NCH2CH2OMe)CF3}] [M = Al (2), Ga (3) 或 In (4)] 的第 13 族金属二甲基配合物是通过以下反应合成的用相应的三甲基金属试剂分离游离配体 1。分离的配合物2-4通过元素分析和核磁共振光谱表征,配合物的分子结构通过单晶X射线衍射确定,表明它们是单体五配位配合物,配位悬垂醚-轴承套索处于固态。热重分析显示配合物 2-4 在 200 °C 下的残留质量均为 2.4% 或更低,远低于相应金属氧化物的值,蒸气压测量显示铟配合物 4 的挥发性低一个数量级( 0. 09 Torr at 80 °C) 比 Al (2) 和 Ga (3) 类似物,尽管它们是等渗系统。研究了配合物 2-4 在 400°C 下在 400°C 下在硅基板上在不存在额外氧化剂的情况下,在低压金属有机化学气相沉积中对相应金属氧化物的效用。