Synthesis and Characterisation of Various Diester and Triester Adducts of TiCl
<sub>4</sub>
作者:Ben J. Blackburn、Jared H. Crane、Caroline E. Knapp、Peter Marchand、David Pugh、Ivan P. Parkin、Claire J. Carmalt
DOI:10.1002/ejic.201500471
日期:2015.8
by single-crystal X-ray diffraction. All structures assumed an octahedral geometry consisting of the titanium bound to four chloride ligands and the diester molecule acting as a bidentate ligand, through its two carbonyl oxygen atoms. Exposure of the isopropyl malonate reaction to trace amounts of water during synthesis resulted in the formation of an oxo-bridged dimeric structure [Ti2(μ-O)Cl3CH2(COOiPr)2}2]
氯化钛 (IV) 和三酯甘油三苯甲酸酯 (gtb) 在无水条件下反应,以研究含三酯的油在工业过程中提纯 TiCl4 中的用途。这导致分离出含有四个钛中心 [(TiCl4)2(gtb)}2] (1) 的氯桥连二聚体复合物。TiCl4 和二酯的其他新型配位化合物;在无水条件下通过直接反应合成丙二酸二异丙酯、丙二酸二苄酯和琥珀酸二乙酯,得到[TiCl4CH2(COOiPr)2}](2)、[TiCl4CH2(COOCH2Ph)2}](3)和[TiCl4 C2H4(COOEt)2}] (4) 分别。化合物1-4的结构由单晶X射线衍射确定。所有结构都假定为八面体几何结构,由与四个氯化物配体结合的钛和通过其两个羰基氧原子充当双齿配体的二酯分子组成。在合成过程中将丙二酸异丙酯反应暴露于痕量水导致形成氧桥二聚体结构 [Ti2(μ-O)Cl3CH2(COOiPr)2}2] (2b),其结构为也可通过单晶