1. cyclo-P4 Building Blocks: Achieving Non-Classical Fullerene Topology and Beyond.
- Author
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Dielmann, Fabian, Peresypkina, Eugenia V., Krämer, Barbara, Hastreiter, Florian, Johnson, Brian P., Zabel, Manfred, Heindl, Claudia, and Scheer, Manfred
- Subjects
SUPRAMOLECULES ,TOPOLOGY ,METASTABLE states ,LIGANDS (Chemistry) ,SUPRAMOLECULAR chemistry - Abstract
The cyclo-P
4 complexes [CpR Ta(CO)2 (η4 -P4 )] (CpR : Cp′′=1,3-C5 H3 tBu2 , Cp′′′=1,2,4-C5 H2 tBu3 ) turned out to be predestined for the formation of hollow spherical supramolecules with non-classical fullerene-like topology. The resulting assemblies constructed with CuX (X=Cl, Br) showed a highly symmetric 32-vertex core of solely four- and six-membered rings. In some supramolecules, the inner cavity was occupied by an additional CuX unit. On the other hand, using CuI, two different supramolecules with either peanut- or pear-like shapes and outer diameters in the range of 2-2.5 nm were isolated. Furthermore, the spherical supramolecules containing Cp′′′ ligands at tantalum are soluble in CH2 Cl2 . NMR spectroscopic investigations in solution revealed the formation of isomeric supramolecules owing to the steric hindrance caused by the third tBu group on the Cp′′′ ligand. In addition, a 2D coordination polymer was obtained and structurally characterized. [ABSTRACT FROM AUTHOR]- Published
- 2016
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