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醚类会被广泛用来改性Ziegler-Natta催化剂,如著名的Solvay型催化剂就是用异戊醚处理β-TiCl_3,国内研制的所谓络合Ⅰ型,或络合Ⅱ型催化剂则是用异戊醚或正丁醚作为络合剂。乙醚与四氯化钛的反应物对3TiCl_3·AlCl_3催化剂有显著的改进,给电子体醚可使铝在催化剂表面富集。因而研究醚与四氯化钛或三氯化钛络合物的结构是一个基本的问题。已知四氯化钛和醚可生成多种络合物,但其分子结构及晶体结构测定甚少,本
Ethers will be widely used to modify Ziegler-Natta catalyst, such as the famous Solvay catalyst is the treatment of β-TiCl_3 with isoamyl ether, the so-called complex type Ⅰ developed in China or complex type Ⅱ catalyst is the use of isopentyl Ether or n-butyl ether as a complexing agent. Diethyl ether and titanium tetrachloride reactant 3TiCl_3 · AlCl_3 catalyst has a significant improvement, the electron donor ether can make aluminum in the catalyst surface enrichment. Therefore, it is a basic problem to study the structure of ether and titanium tetrachloride or titanium trichloride complex. Known titanium tetrachloride and ether can generate a variety of complexes, but the molecular structure and the determination of the crystal structure is very small, the