An Organic–Inorganic Hybrid Semiconducting Quantum Spin Liquid Candidate: (BEDT-TTF)3[Cu2(μ-C2O4)3·CH3CH2OH·1.2H2O]

Bin Zhang; Yan Zhang; Dongwei Wang; Zheming Wang; Guangcai Chang; Zengqiang Gao; Yanjun Guo; Fen Liu; Zhijuan Zhao; Xiaoyu Zhang; Baolong Qu; Peng Xu; Jiaou Wang; Fenliang Dong; Tongling Liang; Yang Sun; Deliang Yang; Qiaolian Li; Xiaofei Luo; Rongjuan Feng; Mei Liu; Xueying Zhang

doi:10.3390/magnetochemistry11020012

Magnetochemistry (Feb 2025)

An Organic–Inorganic Hybrid Semiconducting Quantum Spin Liquid Candidate: (BEDT-TTF)3[Cu2(μ-C2O4)3·CH3CH2OH·1.2H2O]

Bin Zhang,
Yan Zhang,
Dongwei Wang,
Zheming Wang,
Guangcai Chang,
Zengqiang Gao,
Yanjun Guo,
Fen Liu,
Zhijuan Zhao,
Xiaoyu Zhang,
Baolong Qu,
Peng Xu,
Jiaou Wang,
Fenliang Dong,
Tongling Liang,
Yang Sun,
Deliang Yang,
Qiaolian Li,
Xiaofei Luo,
Rongjuan Feng,
Mei Liu,
Xueying Zhang

Affiliations

Bin Zhang: Organic Solid Laboratory, BNLMS, CMS & Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
Yan Zhang: Institute of Condensed Matter and Material Physics, School of Physics, Peking University, Beijing 100871, China
Dongwei Wang: CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, China
Zheming Wang: State Key Laboratory of Rare Earth Materials Chemistry and Applications, BNLMS, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
Guangcai Chang: BSRF, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100047, China
Zengqiang Gao: BSRF, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100047, China
Yanjun Guo: CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, China
Fen Liu: Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
Zhijuan Zhao: Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
Xiaoyu Zhang: Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
Baolong Qu: Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
Peng Xu: CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, China
Jiaou Wang: BSRF, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100047, China
Fenliang Dong: CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, China
Tongling Liang: Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
Yang Sun: Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
Deliang Yang: Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
Qiaolian Li: Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
Xiaofei Luo: Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
Rongjuan Feng: Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
Mei Liu: Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
Xueying Zhang: Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China

DOI: https://doi.org/10.3390/magnetochemistry11020012
Journal volume & issue: Vol. 11, no. 2
p. 12

Abstract

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The organic–inorganic hybrid (BEDT-TTF)3[Cu2(μ-C2O4)3·CH3CH2OH·1.2H2O] (I) was obtained using the electrocrystallization method. It comprises a θ21-phase organic donor layer and a two-dimensional inorganic antiferromagnetic honeycomb lattice. Cu(II) is octahedrally coordinated by three bisbidenetate oxalates, exhibiting Jahn–Teller distortion. CH3CH2OH and H2O molecules are located within the cavities of the honeycomb lattice. The total formal charge of the three donor molecules was assigned to be +2 based on the bond lengths in the TTF core, which corresponded to the Raman spectra. It is a semiconductor with σrt = 0.04 S/cm and Eα = 40 meV. No long-range ordering was observed above 2 K from zero-field cooling/field cooling magnetization, as confirmed by specific heat measurements. The spin frustration with f > 10 from the antiferromagnetic copper-oxalate-framework was observed. It is a candidate quantum spin liquid.

Published in Magnetochemistry

ISSN: 2312-7481 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry
Website: http://www.mdpi.com/journal/magnetochemistry

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