Unusual layer structure in an ion-paired compound containing tetra(isothiocyanate) cobalt(II) dianion and 4-nitrobenzylpyridinium: Crystal structure and magnetic properties

作者：Ye, H. -Q.^*; Li, Y. -Y.; Huang, R. -K.; Liu, X. -P.; Chen, W. -Q.; Zhou, J. -R.; Yang, L. -M.; Ni, C. -L.

来源：Journal of Structural Chemistry, 2014, 55(4): 691-696.

DOI：10.1134/S0022476614040143

• 1-(4'-nitrobenzyl)pyridinium
• tetra(isothiocyanate)cobalt(II) anion
• layer structure
• magnetic properties

A new ion-paired compound [4NO(2)BzPy](2)[Co(NCS)(4)] (1) ([4NO(2)BzPy](+) = 1-(4'-nitrobenzyl)pyridinium, NCS- = isothiocyanate) is synthesized and characterized by elemental analysis, IR and UV-Vis spectra, ESI-MS and single crystal X-ray diffraction. Compound 1 is orthorhombic, space group Pbcn, with a = 13.188(2) , b = 8.458(1) , c = 29.281(4) , V = 3266.2(7) (3), D (calc) = 1.468 g/cm(3), Z = 4, F(000) = 1476, R (1) = 0.0332. The [Co(NCS)(4)](2-) anions form an unusual layer structure by SaEuro broken vertical bar N and SaEuro broken vertical bar Co interactions, while the [4NO(2)BzPy](+) cations stack into a 1D column by the paEuro broken vertical bar pi stacking interaction in the solid state of 1. A magnetic measurement in the range 2-300 K shows a weak antiferromagnetic exchange with theta = -2.42 K in 1.

• 出版日期2014-7
• 单位华南农业大学