Triangular dodecahedra

Very recently we have demonstrated that the structure of solvent-free bis(A -lithium-teA /-butyl-amido)methylsilane (1) [12] - a Si-H compound easily accessible by lithiation of the corresponding N-H derivative with -butyl lithium in n-pentane - can be derived from polyhedron I, if several Li-N bonds of its skeleton are broken and two of those bicapped triangular dodecahedra are combined by additional Li -H and Li-N interactions (Fig, 2). In solution strong agostic Li—H interactions can be realized by considerably reduced Jsi-h coupling constants (Table 1). 

Fig. 35 Crystallization of non-spherical particles homogeneously coated with DNA. (a, b) Schematic of a hexagonal close-packed 2D layer in assemblies of gold nanorods and corresponding structure factor S(q) obtained from SAXS measurements (blue line) and simulations (red line), (c, d) Schematic of ID columnar assembly of gold triangular nanoprisms and corresponding SAXS patterns, (e, f) Schematic of the 3D fee assembly of gold rhombic dodecahedra (the lines indicate the fee unit cell) and corresponding SAXS patterns. Adapted with permission from [152]...

In total, many different container molecules of various shapes like tetrahedra, octahedra, cubes, triangular bipyramids, dodecahedra, icosahedra, cuboctahedra or various shaped prisms or antiprisms have been described in the literature up to now [6-10]. Altogether they are far too many to be described in detail. Therefore this chapter focuses only on container molecules based on imine type ligands. 

---