Alkali-Metal Sandwich Complexes of a 1,2-Diaza-3,5-diborolyl Ligand Featuring η<sup>1</sup>, η<sup>2</sup>, η<sup>3</sup>, and η<sup>4</sup> Coordination Modes
作者:Hanh V. Ly、Taryn D. Forster、Andrea M. Corrente、Dana J. Eisler、Jari Konu、Masood Parvez、Roland Roesler
DOI:10.1021/om061091x
日期:2007.3.1
prepared and characterized. The structures of both monomeric and polymeric sodium metallocenes, as well as the structures of polymeric potassium metallocenes incorporating the new heterocycle, have been determined by single-crystal X-ray diffractometry. These structures reveal not only many similarities but also significant differences in the coordination behavior of the new ligand compared with that of
1,2-二异丙肼和1,1-双(苯基氯硼基)乙烷的闭环反应生成具有CB 2 N 2的杂环化合物框架。该前体的去质子化得到1,2-二异丙基-4-甲基-3,5-二苯基-1,2-二氮杂-3,5-二硼烯丙基,一种环戊二烯基类似物,其在环骨架中仅包含一个碳原子。已经制备并表征了新配体的锂盐,钠盐和钾盐。单体和聚合钠金属茂的结构,以及结合了新杂环的聚合钾金属茂的结构,已通过单晶X射线衍射法确定。这些结构不仅显示出许多相似之处,而且与基于碳的类似物相比,在新配体的配位行为上也存在显着差异。