Issue 5, 2018

Solid state vibrational circular dichroism towards molecular recognition: chiral metal complexes intercalated in a clay mineral

Abstract

Vibrational circular dichroism (VCD) spectroscopy was applied to study chirality recognition in the interlayer space of a clay mineral. Clay intercalation compounds including two kinds of chiral molecules were prepared. Firstly a cationic metal complex, Δ- or Λ-[Ru(phen)3]2+ (phen = 1,10-phenanthroline), was ion-exchanged into sodium montmorillonite. Thereafter a neutral organic molecule, R- or S-1,1′-bi-2-naphthol (denoted as R- or S-BINOL), was co-adsorbed. The solid state VCD spectra were recorded on the hybrid compounds thus prepared. The intensity of VCD peaks in the region of 1300–1400 cm−1, which were assigned to the bending vibrations of OH groups in BINOL, was remarkably dependent on the chirality relation between the two intercalated species. This implied that BINOL took a different conformation in response to the chirality of co-existing [Ru(phen)3]2+.

Graphical abstract: Solid state vibrational circular dichroism towards molecular recognition: chiral metal complexes intercalated in a clay mineral

Supplementary files

Article information

Article type
Paper
Submitted
05 ذو القعدة 1438
Accepted
08 ذو الحجة 1438
First published
08 ذو الحجة 1438

Phys. Chem. Chem. Phys., 2018,20, 3141-3147

Solid state vibrational circular dichroism towards molecular recognition: chiral metal complexes intercalated in a clay mineral

H. Sato, K. Tamura, K. Takimoto and A. Yamagishi, Phys. Chem. Chem. Phys., 2018, 20, 3141 DOI: 10.1039/C7CP05114J

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