Metamagnetic behavior and moisture-absorption induced reversible network assembly of a cobalt-1,2,4-benzenetricarboxylate supramolecular network

Huey Ting Chung; Chen I. Yang; En Che Yang; Chia Chien Peng; Hui Lien Tsai; Yen Hsiang Liu

doi:10.1039/c1ce06182h

Metamagnetic behavior and moisture-absorption induced reversible network assembly of a cobalt-1,2,4-benzenetricarboxylate supramolecular network

Huey Ting Chung, Chen I. Yang, En Che Yang, Chia Chien Peng, Hui Lien Tsai, Yen Hsiang Liu

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

A Co(ii) 1,2,4-benzenetricarboxylate supramolecular network, {Co[C ₆H ₃(CO ₂) ₂(CO ₂H)](H ₂O) ₂·H ₂O} _n (FJU-4) was synthesized from an unsymmetrical ligand, namely 1,2,4-benzenetricarboxylic acid (H ₃btc), under pH-controlled hydrothermal conditions. FJU-4 has a 2D layered structure with an interdigitated pendent-arm, composed of a carboxylate- and a water-bridged cobalt chain, which are united to generate a 3D supramolecular structure through interlayer hydrogen bonding and π-π interactions between the phenyl rings, carboxyl groups, and guest water molecules. The assembly of the FJU-4 network is a reversible process, as the result of changes in noncovalent interactions triggered by dehydration and the absorption of moisture. A magnetic analysis showed that FJU-4 exhibits metamagnetic behavior resulting from spin-canting magnetization while heat capacity measurements indicated that FJU-4 undergoes long range magnetic ordering at 2.6 K.

Original language	English
Pages (from-to)	1317-1323
Number of pages	7
Journal	CrystEngComm
Volume	14
Issue number	4
DOIs	https://doi.org/10.1039/c1ce06182h
Publication status	Published - 2012 Feb 21

All Science Journal Classification (ASJC) codes

General Chemistry
General Materials Science
Condensed Matter Physics

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title = "Metamagnetic behavior and moisture-absorption induced reversible network assembly of a cobalt-1,2,4-benzenetricarboxylate supramolecular network",

abstract = "A Co(ii) 1,2,4-benzenetricarboxylate supramolecular network, {Co[C 6H 3(CO 2) 2(CO 2H)](H 2O) 2·H 2O} n (FJU-4) was synthesized from an unsymmetrical ligand, namely 1,2,4-benzenetricarboxylic acid (H 3btc), under pH-controlled hydrothermal conditions. FJU-4 has a 2D layered structure with an interdigitated pendent-arm, composed of a carboxylate- and a water-bridged cobalt chain, which are united to generate a 3D supramolecular structure through interlayer hydrogen bonding and π-π interactions between the phenyl rings, carboxyl groups, and guest water molecules. The assembly of the FJU-4 network is a reversible process, as the result of changes in noncovalent interactions triggered by dehydration and the absorption of moisture. A magnetic analysis showed that FJU-4 exhibits metamagnetic behavior resulting from spin-canting magnetization while heat capacity measurements indicated that FJU-4 undergoes long range magnetic ordering at 2.6 K.",

author = "Chung, {Huey Ting} and Yang, {Chen I.} and Yang, {En Che} and Peng, {Chia Chien} and Tsai, {Hui Lien} and Liu, {Yen Hsiang}",

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AU - Chung, Huey Ting

AU - Yang, Chen I.

AU - Yang, En Che

AU - Peng, Chia Chien

AU - Tsai, Hui Lien

AU - Liu, Yen Hsiang

PY - 2012/2/21

Y1 - 2012/2/21

N2 - A Co(ii) 1,2,4-benzenetricarboxylate supramolecular network, {Co[C 6H 3(CO 2) 2(CO 2H)](H 2O) 2·H 2O} n (FJU-4) was synthesized from an unsymmetrical ligand, namely 1,2,4-benzenetricarboxylic acid (H 3btc), under pH-controlled hydrothermal conditions. FJU-4 has a 2D layered structure with an interdigitated pendent-arm, composed of a carboxylate- and a water-bridged cobalt chain, which are united to generate a 3D supramolecular structure through interlayer hydrogen bonding and π-π interactions between the phenyl rings, carboxyl groups, and guest water molecules. The assembly of the FJU-4 network is a reversible process, as the result of changes in noncovalent interactions triggered by dehydration and the absorption of moisture. A magnetic analysis showed that FJU-4 exhibits metamagnetic behavior resulting from spin-canting magnetization while heat capacity measurements indicated that FJU-4 undergoes long range magnetic ordering at 2.6 K.

AB - A Co(ii) 1,2,4-benzenetricarboxylate supramolecular network, {Co[C 6H 3(CO 2) 2(CO 2H)](H 2O) 2·H 2O} n (FJU-4) was synthesized from an unsymmetrical ligand, namely 1,2,4-benzenetricarboxylic acid (H 3btc), under pH-controlled hydrothermal conditions. FJU-4 has a 2D layered structure with an interdigitated pendent-arm, composed of a carboxylate- and a water-bridged cobalt chain, which are united to generate a 3D supramolecular structure through interlayer hydrogen bonding and π-π interactions between the phenyl rings, carboxyl groups, and guest water molecules. The assembly of the FJU-4 network is a reversible process, as the result of changes in noncovalent interactions triggered by dehydration and the absorption of moisture. A magnetic analysis showed that FJU-4 exhibits metamagnetic behavior resulting from spin-canting magnetization while heat capacity measurements indicated that FJU-4 undergoes long range magnetic ordering at 2.6 K.

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Metamagnetic behavior and moisture-absorption induced reversible network assembly of a cobalt-1,2,4-benzenetricarboxylate supramolecular network

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