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Updated: Jan 10, 2026
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A disilane-bonded bis(methylpyridine) Cu(I) complex exhibiting reversible trigonal-tetrahedral switch with
Yoshinori Yamanoi1, Yongjin Zhao2, Toyotaka Nakae1
1Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan. ymanoi@chem.s.u-tokyo.ac.jp.
Abstract:
A stimuli-responsive tetranuclear copper(I) complex with 1,1,2,2-tetramethyl-1,2-bis(3-methylpyridin-2-yl)disilane (L1) showed reversible structural transformation between Cu4I4(L1)2·2CH3CN and Cu4I4(L1)2. The change altered copper coordination from a tetrahedral to trigonal type as confirmed by XRD. The solvated form showed stronger blue-green emission (λem = 493 nm, Φ = 0.56) than the desolvated form (λem = 471 nm, Φ = 0.06). The change in emission intensity in the crystalline state was attributed to the change in structural rigidity or flexibility induced by the coordination or non-coordination of CH3CN to the Cu(I) center.
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