The synthesis and the solid state magneticproperties of (nitronylnitroxide)‐substituted trioxytriphenylamine radical cation tetrachlorogallate, NNTOT+·GaCl4−, are reported. In the temperature region between 300 and 3 K, the magnetic behavior is characterized by the strong intramolecular ferromagnetic interaction (J/kB=+400 K) between the radical (NN) and the radical cation (TOT+) and the weak intermolecular
报道了(亚硝酰基氮氧化物)取代的三氧三苯胺自由基阳离子四氯没食子酸酯NNTOT +·GaCl4-的合成和固态磁性能。在300至3 K的温度范围内,磁行为的特征在于自由基(NN)与自由基阳离子(TOT +)之间的强分子内铁磁相互作用(J / k B = + 400 K )和弱的分子间反铁磁性NNTOT +离子之间的相互作用(J / k B = -1.9 K)。低于3 K时,观察到3D型远距离电磁排序为弱铁磁体(TN = 2.65 K)。磁熵(小号MAG = 8.97Ĵķ -1 摩尔-1由热容量测量获得)与理论值一致ř LN3 = 9.13Ĵķ -1 摩尔-1基于所述小号= 1点的状态。
Electrochemical and Spectroscopic Studies on Triarylamine‐Polychlorotriphenylmethyl Dyads with Particularly Strong Triarylamine Donors
作者:Stefanie Breimaier、Rainer F. Winter
DOI:10.1002/ejoc.202100476
日期:2021.9.7
triarylamine (TAA) donor and the perchlorotriphenylmethyl radical acceptor (PCT) are probed for their propensity to equilibrate with their zwitterionic valence tautomers TAA+-PCT−. The UV/vis/NIR and EPR spectroscopic profiles of their oxidized and reduced forms were recorded, but failed to identify such isomers in the neutral state. The cations have an open-shell singlet ground state, situated slightly