Synthesis of 2,2′,3,3′-Tetramethyl- and 2,2′,3,3′-Tetra-<i>tert</i>-butylfulvalene: Attractive Platforms for Dinuclear Transition Metal Fragments, as Exemplified by (<i>η</i>
<sup>5</sup>:<i>η</i>
<sup>5</sup>-2,2′,3,3′-<i>t</i>-Bu<sub>4</sub>C<sub>10</sub>H<sub>4</sub>)M<sub>2</sub>(CO)<sub>
<i>n</i>
</sub>(M = Fe, Ru, Os, Mo) and First X-ray Crystal Structures of Fulvalene Diiron and Diosmium Complexes
作者:K. Peter Vollhardt、Bolin Zhu、Ognjen Š. Miljanić、Michael J. West
DOI:10.1055/s-2005-918438
日期:——
resulting in the preparation of the dinuclear complexes (η 5 :η 5 -t-Bu 4 C 1 0 H 4 )M 2 (CO) 4 (M = Fe, Ru, Os, 8-10) and (η 5 :η 5 -t-Bu 4 C 1 0 H 4 )Mo 2 (CO) 6 (11). The molecular structures of complexes 8 and 10 were determined by X-ray diffraction. Complexes 9 and 10 rearranged on irradiation to their (μ 2 -η 1 :η 5 -cyclopentadienyl) 2 M 2 (CO) 4 isomers 12 and 13, respectively, thermally reversible
2,2',3,3'-四甲基富瓦烯 (4) 和 2,2',3,3'-四叔丁基富瓦烯 (7) 通过两种不同的路线合成。用更容易制备的 7 探索了这些系统作为过渡金属配体的潜力,从而制备了双核配合物 (η 5 :η 5 -t-Bu 4 C 1 0 H 4 )M 2 (CO ) 4 (M = Fe, Ru, Os, 8-10) 和 (η 5 :η 5 -t-Bu 4 C 1 0 H 4 )Mo 2 (CO) 6 (11)。配合物 8 和 10 的分子结构由 X 射线衍射确定。配合物 9 和 10 在辐照下重新排列为它们的 (μ 2 -η 1 :η 5 -环戊二烯基) 2 M 2 (CO) 4 异构体 12 和 13,分别对 12 是热可逆的,而 8 是光惰性的。