Switching the Local Symmetry from <i>D</i><sub>5h</sub> to <i>D</i><sub>4h</sub> for Single-Molecule Magnets by Non-Coordinating Solvents
Xia-Li Ding,
Qian-Cheng Luo,
Yuan-Qi Zhai,
Qian Zhang,
Lei Tian,
Xinliang Zhang,
Chao Ke,
Xu-Feng Zhang,
Yi Lv,
Yan-Zhen Zheng
Affiliations
Xia-Li Ding
Frontier Institute of Science and Technology (FIST), Xi’an Jiaotong University Shenzhen Research School, State Key Laboratory for Mechanical Behavior of Materials, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi’an Key Laboratory of Sustainable Energy and Materials Chemistry, School of Chemistry and School of Physics, 99 Yanxiang Road, Xi’an 710054, China
Qian-Cheng Luo
Frontier Institute of Science and Technology (FIST), Xi’an Jiaotong University Shenzhen Research School, State Key Laboratory for Mechanical Behavior of Materials, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi’an Key Laboratory of Sustainable Energy and Materials Chemistry, School of Chemistry and School of Physics, 99 Yanxiang Road, Xi’an 710054, China
Yuan-Qi Zhai
Frontier Institute of Science and Technology (FIST), Xi’an Jiaotong University Shenzhen Research School, State Key Laboratory for Mechanical Behavior of Materials, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi’an Key Laboratory of Sustainable Energy and Materials Chemistry, School of Chemistry and School of Physics, 99 Yanxiang Road, Xi’an 710054, China
Qian Zhang
State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Department of General Dentistry and Emergency, School of Stomatology, Air Force Medical University, 169 West Changle Road, Xi’an 710032, China
Lei Tian
State Key Laboratory of Military Stomatology, National Clinical Research Center of Oral Diseases, Shaanxi Key Laboratory of Oral Diseases, Department of Cranio-facial Trauma and Orthognathic Surgery, School of Stomatology, The Fourth Military Medical University, 145 West Changle Road, Xi’an 710032, China
Xinliang Zhang
Department of Spine Surgery, Honghui Hospital, Xi’an Jiaotong University, 76 Nanguo Road, Xi’an 710054, China
Chao Ke
Department of Orthopaedic Trauma, Honghui Hospital, College of Medicine, Xi’an Jiaotong University, 28 West Xianning Road, Xi’an 710054, China
Xu-Feng Zhang
Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi’an Jiaotong University, 277 West Yanta Road, Xi’an 710061, China
Yi Lv
Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi’an Jiaotong University, 277 West Yanta Road, Xi’an 710061, China
Yan-Zhen Zheng
Frontier Institute of Science and Technology (FIST), Xi’an Jiaotong University Shenzhen Research School, State Key Laboratory for Mechanical Behavior of Materials, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi’an Key Laboratory of Sustainable Energy and Materials Chemistry, School of Chemistry and School of Physics, 99 Yanxiang Road, Xi’an 710054, China
A solvent effect towards the performance of two single-molecule magnets (SMMs) was observed. The tetrahydrofuran and toluene solvents can switch the equatorial coordinated 4-Phenylpyridine (4-PhPy) molecules from five to four, respectively, in [Dy(OtBu)2(4-PhPy)5]BPh41 and Na{[Dy(OtBu)2(4-PhPy)4][BPh4]2}∙2thf∙hex 2. This alternation significantly changes the local coordination symmetry of the Dy(III) center from D5h to D4h for 1 and 2, seperately. Magnetic studies show that the magnetic anisotropy energy barrier of 2 is higher than that of 1, while the relation of blocking temperature is just on the contrary due to the symmetry effect. The calculations of the electrostatic potential successfully explained the driving force of solvents for the molecular structure change, confirming the feasibility of adjusting the performance of SMMs via diverse solvents.
