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Inside Cover: Jumping Crystal of a Hydrogen‐Bonded Organic Framework Induced by the Collective Molecular Motion of a Twisted π System (Angew. Chem. Int. Ed. 30/2019)
Author(s) -
Takeda Takashi,
Ozawa Masataka,
Akutagawa Tomoyuki
Publication year - 2019
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201907524
Subject(s) - diamondoid , jumping , crystal (programming language) , cover (algebra) , hydrogen bond , molecule , crystallography , crystal structure , molecular dynamics , chemistry , materials science , nanotechnology , physics , stereochemistry , computational chemistry , organic chemistry , computer science , mechanical engineering , engineering , physiology , biology , programming language
Crystal jumping behavior of a hydrogen‐bonded organic framework (HOF) is induced by collective molecular motion. In their Research Article on page 10345, T. Takeda et al. show a HOF composed of a twisted π framework of tetra[2,3]thienylene tetracarboxylic acid, which forms unique six‐fold interpenetrated diamondoid assemblies. Desolvation of the guest THF molecule in the channel of the HOF structure induces collective fluctuation of the twisted π framework, resulting in the crystal jumping behavior. The mechanism is schematically presented in the picture.