Crystal Engineering, Electron Conduction, Molecular Recognition and Reactivity by Chalcogen Bonds in Tetracyanoquinodimethanes Fused with [1,2,5]Chalcogenadiazoles

Article Chemistry, Multidisciplinary

Supramolecular Chalcogen-Bonded Semiconducting Nanoribbons at Work in Lighting Devices

Deborah Romito et al.

Summary: This study describes the design and synthesis of a pi-conjugated tellurophene-based synthon that assembles into nanoribbons through chalcogen bonds. The material exhibits good charge transport properties and significantly improves the stability of light-emitting electrochemical cells.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

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Article Chemistry, Multidisciplinary

Multi-Redox Responsive Behavior in a Mixed-Valence Semiconducting Framework Based on Bis-[1,2,5]-thiadiazolo-tetracyanoquinodimethane

Ryuichi Murase et al.

Summary: This article introduces the multi-step redox properties and optical/electrochromic behavior of the two-dimensional framework [Cu(BTDAT)(MeOH)]. By using electron paramagnetic resonance and visible-near infrared spectroelectrochemistry, the mechanism for multi-step redox processes is elucidated. Computational band structure calculations predict delocalized electronic transport in the framework, suggesting that [Cu(BTDAT)(MeOH)] is a Mott insulator.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

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Article Chemistry, Organic

Molecular Recognition by Chalcogen Bond: Selective Charge-Transfer Crystal Formation of Dimethylnaphthalene with Selenadiazolotetracyanonaphthoquinodimethane

Yusuke Ishigaki et al.

Summary: By fusing with a selenadiazole ring, the nonplanar electron acceptor can selectively form a crystalline charge-transfer complex with 2,6-DMN. The strong Se center dot center dot center dot N chalcogen bond allows for efficient separation of 2,6-DMN from a complex isomer mixture.

EUROPEAN JOURNAL OF ORGANIC CHEMISTRY (2021)

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Article Biochemistry & Molecular Biology

Enantioseparation of 5,5′-Dibromo-2,2′-dichloro-3-selanyl-4,4′-bipyridines on Polysaccharide-Based Chiral Stationary Phases: Exploring Chalcogen Bonds in Liquid-Phase Chromatography

Paola Peluso et al.

Summary: The chalcogen bond is a noncovalent interaction based on electrophilic features of electron charge density depletion regions on group VI bound atoms. Recent studies have shown promising applications in catalysis and crystal engineering. Research has focused on the role and potential of selenium atoms in enantioseparation, as well as the impact of substitution on chiral discrimination.

MOLECULES (2021)

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Review Chemistry, Multidisciplinary

Single-crystal-to-single-crystal Transformations for the Preparation of Small Molecules, 1D and 2D Polymers Single Crystals

Fan Hu et al.

Summary: This article highlights the importance of single-crystal-to-single-crystal transformation and summarizes six different types of organic reactions that can achieve this conversion, emphasizing the potential for advances in crystal structure design.

CHEMISTRY LETTERS (2021)

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Article Chemistry, Multidisciplinary

[1,2,5]Chalcogenadiazole-fused Dicyanonaphthoquinodiimines: Larger Contribution from Chalcogen Bond than Weak Hydrogen Bond in Determining Crystal Structures

Yusuke Ishigaki et al.

Summary: The study found that although the selenadiazole derivative and the sulfur analog form similar selenadiazole ChB-tetramer structures in crystallization, the contribution of ChB in the selenadiazole compound is more significant.

CHEMISTRY LETTERS (2021)

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Article Chemistry, Multidisciplinary