Two One-Dimensional Copper-Oxalate Frameworks with the Jahn–Teller Effect: [(CH3)3NH]2[Cu(μ-C2O4)(C2O4)]·2.5H2O (I) and [(C2H5)3NH]2[Cu(μ-C2O4)(C2O4)]·H2O (II)-Reference-Cited by-同舟云学术

Two One-Dimensional Copper-Oxalate Frameworks with the Jahn–Teller Effect: [(CH3)3NH]2[Cu(μ-C2O4)(C2O4)]·2.5H2O (I) and [(C2H5)3NH]2[Cu(μ-C2O4)(C2O4)]·H2O (II)

Published:2023-04-29 Issue:5 Volume:9 Page:120
ISSN:2312-7481
Container-title:Magnetochemistry
language:en
Short-container-title:Magnetochemistry

Author:

Zhang Bin¹^ORCID,Zhang Yan²^ORCID,Wang Zheming³^ORCID,Sun Yang⁴^ORCID,Liang Tongling⁴^ORCID,Liu Mei⁴,Zhu Daoben¹^ORCID

Affiliation:

1. Organic Solid Laboratory, BNLMS, CMS & Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China

2. Department of Physics, Institute of Condensed Material Physics, Peking University, Beijing 100871, China

3. State Key Laboratory of Rare Earth Materials Chemistry and Applications, BNLMS, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China

4. BNLMS, CMS & Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China

Abstract

Two one-dimensional oxalate-bridged Cu(II) ammonium salts, [(CH3)3NH]2[Cu(μ-C2O4)(C2O4)]·2.5H2O (I) and [(C2H5)3NH]2[Cu(μ-C2O4)(C2O4)]·H2O (II) were obtained and characterized. They were composed of ammonium: (CH3)3NH+ in (I), (C2H5)3NH+ in (II), [Cu(μ-C2O4)(C2O4)2−]n and H2O. The Jahn–Teller-distorted Cu(II) is octahedrally coordinated by six O atoms from three oxalates and forms a one-dimensional zigzag chain. The hydrogen bonds between ammonium, the anion and H2O form a three-dimensional network. There is no hydrogen bond between the anion chains. They were insulated at 20 °C with a relative humidity of 40%. Ferromagnetic and weak-ferromagnetic behaviors were observed in I and II, separately. No long-range ordering was observed above 2 K.

Funder

National Natural Science Foundation of China

Chinese Academy of Sciences

Publisher

MDPI AG

Subject

Materials Chemistry,Chemistry (miscellaneous),Electronic, Optical and Magnetic Materials

Link

https://www.mdpi.com/2312-7481/9/5/120/pdf

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