Metamagnetic Behavior of Triethylenetetrammonium Hexachlorocuprate(II), [${\mathrm{C}}_6$${\mathrm{H}}_{22}$${\mathrm{N}}_4$]Cu${\mathrm{Cl}}_6$

The compound triethylenetetrammonium hexachlorocuprate(II), [${\mathrm{C}}_6$ ${\mathrm{H}}_{22}$ ${\mathrm{N}}_4$]Cu${\mathrm{Cl}}_6$, exhibits two-dimensional magnetic behavior in the temperature range 20-75 K with an exchange constant of $\frac{J}{k}=19.4\mathrm{}$ K derived from a fit of the data by the expansion of Baker et al. There is a phase transition to an antiferromagnetic state at 8.95 ± 0.1 K, and the magnetization data suggest metamagnetic behavior.