Spin dynamics in a Heisenberg weak antiferromagnetic chain of an iodide-bridged Cu(II) complex.

[Cu II (chxn) 2 I]I (chxn = 1 R ,2 R -diaminocyclohexane) has been synthesized, which is the first report of an iodide-bridged Cu(II) chain structure. This chain compound shows S = 1/2 Heisenberg weak antiferromagnetism ( J = -0.3 cm -1 ) and magnetic relaxation ( τ = 43 ms at 1.8 K) with a Raman process in a static field.