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Water‐Mediated Structural Transformations of Cu II 5‐Halonicotinates Coordination Networks with Distinct Mechanisms
Author(s) -
Li ChengPeng,
Zhou Hang,
Ju Yue,
Du Miao
Publication year - 2017
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201702405
Subject(s) - crystallography , single crystal , recrystallization (geology) , supramolecular chemistry , chemistry , halogen , crystal structure , diffraction , crystal (programming language) , core (optical fiber) , materials science , physics , optics , computer science , geology , paleontology , programming language , alkyl , organic chemistry , composite material
Currently, no unequivocal evidence is given for elucidation of “black box” during the structural transformations of dynamic crystalline materials. Here, three types of mechanisms are revealed for such transformations through X‐ray diffraction and optical microscopy; namely, single‐crystal to single‐crystal (SC–SC), as well as “core‐to‐core” and “core‐on‐shell” processes. As confirmed by time‐lapse optical microscopy, the latter two cases can be properly ascribed as partial recrystallization processes, while the former one is a continuous process with two different crystal lattices simultaneously maintained in one single crystal. Interestingly, these three distinct pathways can be exquisitely realized by changing only the halogen substituent (from ‐F, ‐Cl, to ‐Br) of the organic ligands in the coordination supramolecular systems.