Three ruthenocene derivatives: (η<sup>5</sup>-4,7-dimethylindenyl)(η<sup>5</sup>-pentamethylcyclopentadienyl)ruthenium(II), [η<sup>5</sup>-[2](4,7)indeno[2]paracyclophanyl](η<sup>5</sup>-pentamethylcyclopentadienyl)ruthenium(II) and bis[η<sup>5</sup>-[2](4,7)indeno[2]paracyclophanyl]ruthenium(II)
作者:Peter G. Jones、Thorsten Hartig、Henning Hopf
DOI:10.1107/s0108270102008090
日期:2002.6.15
In the title compounds, [Ru(C(10)H(15))(C(11)H(11))], (III), [Ru(C(10)H(15))(C(19)H(17))], (IV), and [Ru(C(19)H(17))(2)], (V), respectively, the coordinating ring systems are planar and parallel, with the Ru atoms lying at perpendicular distances of Ru-Cp* 1.790 (1) A and Ru-indenyl 1.836 (1) A in (III), Ru-Cp* 1.791 (1) A and Ru-indenyl 1.837 (1) A in (IV), and Ru-indenyl 1.812 (1) A and 1.809 (1) A in (V) (Cp* is pentamethylcyclopentadienyl). The ring conformations are eclipsed for (III), staggered for (IV) and intermediate for (V). All three compounds show short intermolecular contacts from C-H groups to some ring centroids; these could be regarded as C-H.pi hydrogen bonds. The molecules of each compound are thus connected via the 2(1) screw axis to form layers parallel to the xy plane.