| Title | Organic-inorganic hybrid metallic conductors based on bis(ethylenedithio)tetrathiafulvalene cations and antiferromagnetic oxalate-bridged copper(ii) dinuclear anions |
| Authors | Zhang, Bin Zhang, Yan Wang, Zheming Wang, Dongwei Yang, Deliang Gao, Zengqiang Chang, Guangcai Guo, Yanjun Mori, Takehiko Zhao, Zhijuan Liu, Fen Li, Qiaolian Zhu, Daoben |
| Affiliation | Chinese Acad Sci, BNLMS, Organ Solid Lab, CMS, Beijing 100190, Peoples R China Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China Peking Univ, Inst Condensed Matter & Mat Phys, Dept Phys, Beijing 100871, Peoples R China Peking Univ, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat Chem & Applicat, BNLMS, Beijing 100871, Peoples R China Natl Ctr Nanosci & Technol, CAS Key Lab Standardizat & Measurement Nanotechno, Beijing 100190, Peoples R China Chinese Acad Sci, CAS Res Educ Ctr Excellence Mol Sci, CMS, Inst Chem, Beijing 100190, Peoples R China Chinese Acad Sci, Inst Chem, BNLMS, Beijing 100190, Peoples R China Chinese Acad Sci, Inst High Energy Phys, BSRF, Beijing 100047, Peoples R China Tokyo Inst Technol, Dept Mat Sci & Engn, O Okayama, Tokyo 1528552, Japan |
| Keywords | MAGNETIC-PROPERTIES MOLECULAR-METAL BETS TETRATHIAFULVALENE COMPLEXES SUPERCONDUCTORS COEXISTENCE TRANSITION DESIGN DIMERS |
| Issue Date | 17-Feb-2022 |
| Publisher | JOURNAL OF MATERIALS CHEMISTRY C |
| Abstract | The organic-inorganic hybrid beta ''-(BEDT-TTF)(3)[Cu-2(mu-C2O4)(C2O4)(2)(CH3OH)(H2O)] (BEDT-TTF = bis(ethylenedithio)tetrathia-fulvalene) composed of a BEDT-TTF donor and the oxalate-bridged binuclear anion [Cu-2(mu-C2O4)(C2O4)(2)(CH3OH)(H2O)(]2-) has been obtained by electrocrystallization. It crystallizes in the triclinic P1 space group with cell parameters of a = 7.4803(3) angstrom, b = 9.3547(3) angstrom, c = 18.6711(7) angstrom, alpha = 95.797(3)degrees, beta = 90.974(3)degrees, gamma = 93.508(3)degrees, V = 1297.06(8) angstrom(3), and Z = 1 at 100 K. The donor arrangement belongs to the beta '' phase. From the TTF core bond lengths and Raman spectroscopy, the oxidation state of BEDT-TTF is assigned to similar to + 2/3. CH3OH or H2O molecules bond to the metal atoms at the apical position of the square pyramid with an occupancy of 0.5. A supramolecular square lattice forms through hydrogen bonds between the antiferromagnetic binuclear anions in the anion sheet. From the band structure at 100 K, metallic conductivity is expected, which agrees with four-probe conductivity measurements: its conductivity is 11.5 S cm(-1) at room temperature, increases to 160 S cm(-1) at 7.6 K, and then decreases to 150 S cm(-1) at 2 K. From magnetic measurements, there is no long-range magnetic ordering, which is confirmed by specific heat measurements. |
| URI | http://hdl.handle.net/20.500.11897/637738 |
| ISSN | 2050-7526 |
| DOI | 10.1039/d1tc04305f |
| Indexed | SCI(E) |
| Appears in Collections: | 物理学院 å å¦ä¸ å å å·¥ç¨ å¦é ¢ 稀土材料化学与应用国家重点实验室 |
