基于四氰基吡啶（TCNPy）的磁体的表征：V[TCNPy]2·z(CH2Cl2)（居里温度Tc = 111 K）和V[TCNPy]3·z(CH2Cl2)（居里温度Tc = 90 K）
Characterization of Tetracyanopyridine (TCNPy)-Based Magnets: V[TCNPy]2 ⋅z (CH2 Cl2 ) (Tc =111 K) and V[TCNPy]3 ⋅z (CH2 Cl2 ) (Tc =90 K).
作者信息
Hao Jingjun, Davidson Royce A, Kareis Christopher M, Kavand Marzieh, van Schooten Kipp J, Boehme Christoph, Wöß Eva, Knör Günther, Miller Joel S
机构信息
Material Research Science and Engineering Center, University of Utah, Salt Lake City, UT, 84112, USA.
Department of Chemistry, 315 S. 1400 E. RM 2124, University of Utah, Salt Lake City, UT, 84112-0850, USA.
出版信息
Chemistry. 2016 Sep 26;22(40):14273-8. doi: 10.1002/chem.201602385. Epub 2016 Aug 16.
The reaction of 2,3,5,6-tetracyanopyridine (TCNPy) with V(CO)6 in CH2 Cl2 forms new organic-based magnets of V[TCNPy]x ⋅z (CH2 Cl2 ) (x=2, 3) composition. Analysis of the IR spectra suggests that the TCNPy is reduced and coordinated to V(II) sites through the nitriles. V[TCNPy]x order as ferrimagnets with 111 and 90 K Tc values for V[TCNPy]2 and V[TCNPy]3 , respectively. Their respective remanent magnetizations and coercive fields are 1260 and 250 emuOe mol(-1) and 9 and 6 Oe at 5 K, and they exhibit some spin-glass behavior.
2,3,5,6-四氰基吡啶（TCNPy）与V(CO)6在二氯甲烷中反应形成了具有V[TCNPy]x ⋅z (CH2 Cl2 ) （x = 2, 3）组成的新型有机基磁体。红外光谱分析表明，TCNPy被还原并通过腈基与V(II)位点配位。V[TCNPy]x分别以亚铁磁体的形式有序排列，V[TCNPy]2和V[TCNPy]3的居里温度（Tc）值分别为111 K和90 K。它们在5 K时的剩余磁化强度和矫顽场分别为1260和250 emuOe mol(-1)以及9和6 Oe，并且表现出一些自旋玻璃行为。
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