The structure and modified properties of a self-dimerised Cu(<scp>ii</scp>) inclusion complex in γ-cyclodextrins

Hamaguchi, Tomohiko; Ishikawa, Ryuta; Mishima, Akio; Hayami, Shinya; Ohba, Masaaki; Satoh, Minoru; Kawata, Satoshi

doi:10.1039/d3dt00176h

Dalton Trans.

2023

DOI: 10.1039/d3dt00176h

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The structure and modified properties of a self-dimerised Cu(ii) inclusion complex in γ-cyclodextrins

Tomohiko Hamaguchi

Ryuta Ishikawa

Akio Mishima

et al.

Abstract: Inclusion structures incorporating more than one guest molecule are elusive because confinement alters the molecular properties. We report the solid-state characterization of an inclusion complex comprising two γ-cyclodextrins and two...

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2024

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Structure of Ni(II) Inclusion Complex in Solid/Solution States and the Enhancement of Catalytic Behavior in Electrochemical Hydrogen Production

Hamaguchi,

Iseki,

Ishikawa

et al. 2024

Molecules

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In this article, we investigate the encapsulation of K2[Ni(maleonitriledithiolate)2] (1) within a host molecule, β-cyclodextrin (β-CD), via single-crystal X-ray analysis. An inclusion complex, K2{[Ni(maleonitriledithiolate)2]@(β-CD)2} (2), was constructed from 1 and two β-CDs. The anion guest Ni complex included a host cavity, constructed using two β-CDs, and the Ni atom of the anion was located between the two hydrophilic primary rims. Ultraviolet-visible absorption spectroscopy revealed that inclusion complex 2 exhibited a 2:1 (host:guest) stoichiometry in the solution, which is consistent with the result obtained from X-ray crystallography. The association of the host and guest occurred in two steps, and the association constants for the first and second steps were 1.1(7) × 104 and 1.8(5) × 104 mol−1 dm3, respectively. The catalytic behavior of 1 and 2 was investigated for electrochemical hydrogen production in the aqueous solution of an acetate buffer (pH = 4.72). During the catalytic reaction, inclusion complex 2 was observed to have a better catalytic reaction rate than 1. The study findings provide insights into the effects of the encapsulation of guest molecules within host structures.

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Structure of Ni(II) Inclusion Complex in Solid/Solution States and the Enhancement of Catalytic Behavior in Electrochemical Hydrogen Production

Hamaguchi,

Iseki,

Ishikawa

et al. 2024

Molecules

View full text Add to dashboard Cite

show abstract

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The structure and modified properties of a self-dimerised Cu(ii) inclusion complex in γ-cyclodextrins

Abstract: Inclusion structures incorporating more than one guest molecule are elusive because confinement alters the molecular properties. We report the solid-state characterization of an inclusion complex comprising two γ-cyclodextrins and two...

Cited by 1 publication

References 32 publications

Structure of Ni(II) Inclusion Complex in Solid/Solution States and the Enhancement of Catalytic Behavior in Electrochemical Hydrogen Production

Structure of Ni(II) Inclusion Complex in Solid/Solution States and the Enhancement of Catalytic Behavior in Electrochemical Hydrogen Production

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