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Updated: Jul 17, 2026

Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
Observation of characteristic IR band assignable to dimerized copper ions in montmorillonite
Masashi Tanaka1, Atsushi Itadani, Takahiro Abe
1Research Laboratory for Surface Science, Faculty of Science, Okayama University, 3-1-1 Tsushima-naka, Okayama 700-8530, Japan.
Abstract:
Copper ion-exchanged montmorillonite clays, which had been prepared by ion exchange in an aqueous solution of CuCl(2) at a temperature above 323 K, exhibited the characteristic IR band in the region 3360-3310 cm(-1). No such bands were observed for the samples prepared by using different ion-exchange solutions and at different temperatures. From the spectroscopic observations, it was revealed that the ion-exchanged copper ions (Cu(2+)) are in the form of dimerized species by bridging two hydroxyls, [Cu(2+) <(OH(-)(2) > Cu(2+)], in montmorillonite.
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