校園頭條

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化學系王志傑特聘教授發表最新期刊論文

A Pair of CoII Supramolecular Isomers Based on Flexible Bis-Pyridyl-Bis-Amide and Angular Dicarboxylate Ligands

作者：Pradhumna Mahat Chhetri, Ming-Hao Wu, Chou-Ting Hsieh, Xiang-Kai Yang, Chen-Ming Wu, En-Che Yang, Chih-Chieh Wang, Jhy-Der Chen

Molecules

卷：25  期：1

文獻號碼：201

出版：03 Jan 2020 (SCI)

摘要：

Thermal reactions of cobalt(II) salts with flexible N,N′-bis(pyrid-3-ylmethyl)adipoamide (L) and angular 4,4′-sulfonyldibenzoic acid (H₂SDA) in H₂O and CH₃OH afforded a pair of supramolecular isomers: [Co₂(L)(SDA)₂], 1, and [Co₂(L)(SDA)₂]⋅CH₃OH⋅H₂O, 2. The structure of complex 1 can be simplified as a one-dimensional (1D) looped chain with L ligands penetrating into the middles of squares, forming a new type of self-catenated net with the (4²⋅5⁴)(4)₂(5)₂ topology, whereas complex 2 displays a 2-fold interpenetrated 2D net with the rare (4²⋅6⁸⋅8⋅10⁴)(4)₂-2,6L1 topology. While both complexes 1 and 2 display antiferromagnetism with strong spin-orbital coupling, the antiferromagnetism of 2 is accompanied by a cross-over behavior and probably a spin canting phenomenon.

Keywords

coordination polymer, supramolecular isomer, coordination chemistry, entanglement

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