“…The presence of a relatively strong exchange coupling mediated by hydrogen bonds in Ni(II) coordination complexes is not unusual, e.g., in. 62 The field dependence of the magnetization measured at different temperatures was plotted in the rescaled coordinates in Figure 13 . The deviation between magnetization curves in Figure 13 over the whole field range suggests an interplay of the exchange coupling and magnetic anisotropy described by the spin Hamiltonian; if FM coupling was only taken into account, the curves would tend to meet at high H / T at low temperatures.…”