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A 3d‐4f Complex Constructed by the Assembly of a Cationic Template, [Cu(en) 2 ] 2+ , and a 3D Anionic Coordination Polymer, [Sm 2 (C 2 O 4 ) 3 (C 5 O 5 )(H 2 O) 2 ] 2–
Author(s) -
Ke SzuYu,
Yeh ChangTsung,
Wang ChihChieh,
Lee GeneHsiang,
Sheu HwoShuenn
Publication year - 2017
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.201700007
Subject(s) - cationic polymerization , polymer , crystallography , materials science , polymer chemistry , chemistry , organic chemistry
A three‐dimensional (3D) 3d‐4f complex, [Cu(en) 2 ][Sm 2 (C 5 O 5 )(C 2 O 4 ) 3 (H 2 O) 2 ] · 8H 2 O ( 1 ) (en = ethylenediamine, C 5 O 5 2– = dianion of 4,5‐dihydroxycyclopent‐4‐ene‐1,2,3‐trione), were prepared via the in‐situ ring‐opening oxidation reaction of croconate in the presence of the template‐directed complex, [Cu(en) 2 ] 2+ cation. The structural characterization determined by X‐ray diffraction determination reveals that the 3D anionic coordination polymer of [Sm 2 (C 2 O 4 ) 3 (C 5 O 5 )(H 2 O) 2 ] 2– in 1 can be describe in terms of in‐plane 2D honeycomb‐like [Sm 2 (C 2 O 4 ) 3 ] layered frameworks bridged by oxalate with bis ‐chelating mode, being mutually interlinked via the bridge of μ 1,2,3,4 ‐croconate ligands with bis ‐chelating coordination mode to complete the 3D open framework, which gives rise to 1D channels with pore size of 14.023 × 11.893 Å (longest atom–atom contact distances) along the b axis. The structure‐directing complex, [Cu(en) 2 ] 2+ , and solvated water molecules are resided into these honeycomb‐type hexagonal channels. The thermal stability of 1 was further studied by TGA and in‐situ powder X‐ray diffraction measurement.