Air-stable diradical dications with ferromagnetic interaction exceeding the thermal energy at room temperature: from a monomer to a dimer  

作　　者：Wenqing Wang Lei Wang Sheng Chen Wenbang Yang Zaichao Zhang Xinping Wang 

机构地区：[1]State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University [2]School of Chemistry and Chemical Engineering, Huaiyin Normal University

出　　处：《Science China Chemistry》2018年第3期300-305,共6页中国科学（化学英文版）

基　　金：supported by the National Natural Science Foundation of China(21525102,21690062);the Natural Science Foundation of Jiangsu Province(BK20140014)

摘　　要：Two tetraazacyclophane dications(1^(2+) and 2^(2+)) with different remote substituents have been synthesized, isolated and characterized.Their electronic structures and physical property were studied by various spectroscopic techniques, single crystal X-ray diffraction,super conducting quantum interference device(SQUID) measurements and theoretical calculations. The dications have triplet ground states with ferromagnetic interaction exceeding the thermal energy at room temperature. The solid-state structures of these species were tunable by substituent effect, with 1^(2+) as a monomer and 2^(2+) as a dimer.Two tetraazacyclophane dications（1^（2＋） and 2^（2＋）） with different remote substituents have been synthesized, isolated and characterized.Their electronic structures and physical property were studied by various spectroscopic techniques, single crystal X-ray diffraction,super conducting quantum interference device（SQUID） measurements and theoretical calculations. The dications have triplet ground states with ferromagnetic interaction exceeding the thermal energy at room temperature. The solid-state structures of these species were tunable by substituent effect, with 1^（2＋） as a monomer and 2^（2＋） as a dimer.

关 键 词：DIRADICAL DICATION triplet ground state ferromagnetic interaction X-ray crystal structure 

分 类 号：O626[理学—有机化学]