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. 2009 May 20;131(19):6695-7.
doi: 10.1021/ja902045q.

Construction of multifunctional cuboctahedra via coordination-driven self-assembly

Koushik Ghosh  1 , Jiming Hu, Henry S White, Peter J Stang
Affiliations

Construction of multifunctional cuboctahedra via coordination-driven self-assembly

Koushik Ghosh et al. J Am Chem Soc. .

Abstract

We present a general strategy for the synthesis of stable, multifunctional cuboctahedral complexes in which coordination-driven self-assembly allows for precise control over positioning of either ferrocene or crown ether functionalities. The appropriate stoichiometric combination of functionalized 120 degree diplatinum acceptor units with tritopic donor units afforded supramolecular cuboctahedra with covalently linked functional groups. The compounds are characterized by multinuclear NMR spectroscopy, electrospray ionization mass spectrometry, and electrochemistry.

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Figures

Figure 1
Figure 1
31P NMR spectra (300 MHz, CD2Cl2, 298 K) of (A) acceptor 1, (B) cuboctahedron 4, (C) acceptor 2, and (D) cuboctahedron 5.
Figure 2
Figure 2
Molecular modeling of multiferrocenyl cuboctahedron 4.
Figure 3
Figure 3
(A) Cyclic voltametry of compound 4 at different scan rates (50–200 mV/s) at a 1 mm2 Pt electrode. (B) Steady-state current response of compound 4 at 20 mV/s at a microsized (26 μm diameter) Pt disk electrode. Solution: 0.2 mM 4 in acetone containing 0.1 M n-Bu4NPF6.
Scheme 1
Scheme 1
Graphical Representation of the Self-Assembly of Cuboctahedra 4 and 5
See this image and copyright information in PMC

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