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Synthesis and Structural Phase Transitions of Copper(II) and Iron(III) Complexes Containing [(C 8 H 12 NO)(18‐crown‐6)] + Supramolecular Cations
Author(s) -
Jin Yu,
Yu ChunHua,
Wang YuFeng,
Li SiChao,
Zhang Wen
Publication year - 2014
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201300533
Subject(s) - supramolecular chemistry , crystallography , phase transition , crystal structure , copper , crystal (programming language) , chemistry , phase (matter) , transition metal , single crystal , 18 crown 6 , ion , materials science , inorganic chemistry , organic chemistry , catalysis , physics , quantum mechanics , computer science , programming language
The organic‐inorganic hybrid compounds, [Cu 2 Cl 6 ] 2– ( 1 ), [Fe 2 Cl 6 O] 2– ( 2 ), and [FeCl 4 ] – ( 3 ), based on [(C 8 H 12 NO)(18‐crown‐6)] + (C 8 H 12 NO = 4‐methoxybenzylammonium) supramolecular cations, were synthesized and structurally characterized. Crystal structure analyses and thermal and dielectric studies showed that compounds 1 and 2 have similar crystal packings and undergo reversible phase transitions at 230 K and 358 K, respectively. Compound 3 shows a phase transition at 361 K, though its crystal structure is remarkably different from 1 and 2 . These results indicate that the phase transitions may arise from the [(C 8 H 12 NO)(18‐crown‐6)] + supramolecular cations. The role of the chlorometalate anions is to tune the crystal packings and thus the phase transition points and types.