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. 2019 Jan 23;10(10):2940-2944.
doi: 10.1039/c8sc05471a. eCollection 2019 Mar 14.

From nano-balls to nano-bowls

Helena Brake  1 , Eugenia Peresypkina  1   2 , Claudia Heindl  1 , Alexander V Virovets  1   2 , Werner Kremer  3 , Manfred Scheer  1
Affiliations

From nano-balls to nano-bowls

Helena Brake et al. Chem Sci. .

Abstract

Pentaphosphaferrocene [Cp*Fe(η5-P5)] in combination with Cu(i) halides is capable of a template-directed synthesis of fullerene-like spheres. Herein, we present the use of a triple decker complex as template that leads to the formation of unprecedented 'nano-bowls'. These spherical domes resemble the truncated fullerenes I h-C80 and represent a novel spherical arrangement in the chemistry of spherical molecules.

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Figures

Fig. 1
Fig. 1. (a) Building block [Cp*Fe(η5-P5)]; (b) template [(CpCr)2(μ,η5:5-As5)] (1); (c) inclusion of 1 into the 90-vertex sphere A; (d) inclusion of the 16VE fragment [CpCr(η5-As5)] generated from 1 into the 80-vertex sphere B.
Fig. 2
Fig. 2. (a) Inorganic scaffold of 2; (b) with the encapsulated template 1 within the scaffold; (c) molecular structure of 1@2a. Hydrogen atoms and minor parts of disorder are omitted for clarity; the template is shown as a space-filling model.
Fig. 3
Fig. 3. Intermolecular interactions in 1@2a and 1@2b: (a) host–guest π interactions between the guest molecule 1 and hosts 2 schematically shown as (cyclo-P5)Cu5 shells; (b) inorganic cores 2 forming a σ–π supramolecular synthon based on X···Cp* interactions (shown in green). Other {Cp*Fe} fragments are not shown; (c) a column based on π–π host–guest interactions; (d) a packing of host–guest columns in 1@2a connected via σ–π synthons (b). Hydrogen atoms are omitted for clarity; the template is shown in the space-filling-model.
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