The Lipophilically Wrapped Polyion Aggregate {[Ba_6Li_30_2]~(11+) [~- OC(CH_3)_3]_(11)(OC_4H_8)_3} a Face-Sharing (Octahedron + Prismane) Ba_6Li_3O_2 Polyhedron in a Hydrocarbon Ellipsoid: Preparation, Single Crystal Structure Analysis, and Density F

摘要

When barium metal is treated with rert-butyl alcohol, n-butyl-lithium in --hexane added, the precipitate filtered off, dissolved in tetrahydrofuran, and the resulting solution layered with H-hex-ane, colorless monoclinic prisms of a novel type of cluster crystallize [Eq. (a)]. According to the single crystal structure determination (Fig. 1 center), its nucleus [Ba_6Li_3O_2]~(11+) consists of a Ba_6~(2+) octahedron surrounding an O2 ion and of an analogously O~(2-) centered prismate Ba_3~(2+)Li_3~+ formed by connecting three Li~+ centers to one of the triangular faces Ba_3~(2+).