Inside Cover: An Element‐Substituted Cyclobutadiene Exhibiting High‐Energy Blue Phosphorescence (Angew. Chem. Int. Ed. 40/2021)

The ground‐ and excited‐state properties of a diazadiboretidine (DADBT) derivative, an isoelectronic heterocyclic analogue of cyclobutadiene, are reported by Henrik Ottosson, Hiromi Nakai, Tadaaki Ikoma, Takanori Fukushima, and co‐workers in their Research Article on page 21817. While the B2N2 ring...

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Published inAngewandte Chemie International Edition Vol. 60; no. 40; p. 21598
Main Authors Shoji, Yoshiaki, Ikabata, Yasuhiro, Ryzhii, Ivan, Ayub, Rabia, El Bakouri, Ouissam, Sato, Taiga, Wang, Qi, Miura, Tomoaki, Karunathilaka, Buddhika S. B., Tsuchiya, Youichi, Adachi, Chihaya, Ottosson, Henrik, Nakai, Hiromi, Ikoma, Tadaaki, Fukushima, Takanori
Format Journal Article
LanguageEnglish
Published 27.09.2021
Subjects
aromaticity
DFT calculations
luminescence
main-group elements
reaction mechanisms
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Summary:The ground‐ and excited‐state properties of a diazadiboretidine (DADBT) derivative, an isoelectronic heterocyclic analogue of cyclobutadiene, are reported by Henrik Ottosson, Hiromi Nakai, Tadaaki Ikoma, Takanori Fukushima, and co‐workers in their Research Article on page 21817. While the B2N2 ring of the DADBT derivative adopts a rhombic geometry in the ground state, it turns to a square geometry with a nonaromatic character in the lowest triplet state. Notably, the DADBT derivative displays blue phosphorescence in solution, providing insight into the photophysical properties of heterocyclic π‐systems.
Bibliography:These authors contributed equally to this work.
ISSN:1433-7851
1521-3773
1521-3773
DOI:10.1002/anie.202108413