Ishii Akihiko, Toda Tomoyuki, Nakata Norio, Matsuo Tsukasa
Department of Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-okubo, Sakura-ku, Saitama 338-8570, Japan.
J Am Chem Soc. 2009 Sep 30;131(38):13566-7. doi: 10.1021/ja903369q.
Six-coordinated dibenzyl Zr complex bearing an [OSSO]-type tetradentate ligand was synthesized, and the structure was fully characterized by NMR spectroscopy and X-ray crystallography. The zirconium complex has C(2) symmetry in solution. Owing to an effect of the cyclooctane ring structure, the combination of the zirconium complex and B(C(6)F(5))(3) or (Ph(3)C)[B(C(6)F(5))(4)] as the activator exhibited high activity toward polymerization of 1-hexene to yield highly isotactic poly(1-hexene).
合成了带有[OSSO]型四齿配体的六配位二苄基锆配合物，其结构通过核磁共振光谱和X射线晶体学进行了全面表征。该锆配合物在溶液中具有C(2)对称性。由于环辛烷环结构的影响，锆配合物与作为活化剂的B(C(6)F(5))(3)或(Ph(3)C)[B(C(6)F(5))(4)]的组合对1-己烯聚合表现出高活性，以产生高度全同立构的聚(1-己烯)。
