Synthesis of chiral self-assembling rhombs and their characterization in solution, in the gas phase, and at the liquid-solid interface

Kyung Seok Jeong, Sun Young Kim, Ueon Sang Shin, Michael Kogej, Nguyen T M Hai, Peter Broekmann, Nakcheol Jeong, Barbara Kirchner, Markus Reiher, Christoph A. Schalley

Research output: Contribution to journalArticle

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Abstract

Chiral, enantiopure metallo-supramolecular rhombs self-assemble in solution through coordination of bis-pyridyl-substituted ligands with (en)M(NO 3)2 (en = ethylenediamine, M = PdII, Pt II). Characterization by NMR and CD spectroscopy in solution and by ESI-FT-ICR mass spectrometry in the gas phase suggests that an equilibrium exists in water/methanol of a major 2:2 complex and a minor 3:3 complex of ligands and metal corners. In the gas phase, doubly charged 2:2 complexes fragment into two identical singly charged halves followed by metal-mediated C-H and C-C bond activation reactions within the ethylenediamine ligands. Electrochemical scanning tunneling microscopy (EC-STM) provides in situ imaging of the complexes even with submolecular resolution. Flat-lying rhombs are deposited under potential control from an aqueous electrolyte on a Cu(100) electrode surface precovered by a tetragonal pattern of chloride anions from the supporting electrolyte. Chirality induces the formation of only one domain orientation. Density functional calculations help to interpret the STM images.

Original languageEnglish
Pages (from-to)17672-17685
Number of pages14
JournalJournal of the American Chemical Society
Volume127
Issue number50
DOIs
Publication statusPublished - 2005 Dec 21

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ethylenediamine
Gases
Ligands
Electrolytes
Electrochemical Scanning Microscopy
Liquids
Scanning Tunnelling Microscopy
Metals
Chirality
Coordination Complexes
Scanning tunneling microscopy
Density functional theory
Anions
Mass spectrometry
Methanol
Chlorides
Mass Spectrometry
Electrodes
Magnetic Resonance Spectroscopy
Negative ions

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Synthesis of chiral self-assembling rhombs and their characterization in solution, in the gas phase, and at the liquid-solid interface. / Jeong, Kyung Seok; Kim, Sun Young; Shin, Ueon Sang; Kogej, Michael; Hai, Nguyen T M; Broekmann, Peter; Jeong, Nakcheol; Kirchner, Barbara; Reiher, Markus; Schalley, Christoph A.

In: Journal of the American Chemical Society, Vol. 127, No. 50, 21.12.2005, p. 17672-17685.

Research output: Contribution to journalArticle

Jeong, KS, Kim, SY, Shin, US, Kogej, M, Hai, NTM, Broekmann, P, Jeong, N, Kirchner, B, Reiher, M & Schalley, CA 2005, 'Synthesis of chiral self-assembling rhombs and their characterization in solution, in the gas phase, and at the liquid-solid interface', Journal of the American Chemical Society, vol. 127, no. 50, pp. 17672-17685. https://doi.org/10.1021/ja053781i
Jeong, Kyung Seok ; Kim, Sun Young ; Shin, Ueon Sang ; Kogej, Michael ; Hai, Nguyen T M ; Broekmann, Peter ; Jeong, Nakcheol ; Kirchner, Barbara ; Reiher, Markus ; Schalley, Christoph A. / Synthesis of chiral self-assembling rhombs and their characterization in solution, in the gas phase, and at the liquid-solid interface. In: Journal of the American Chemical Society. 2005 ; Vol. 127, No. 50. pp. 17672-17685.
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