Temperature-dependent magnetic measurements were performed to further investigate the spinstate switching of 2. Variable temperature magnetic susceptibility studies showed that the measured T value decreases abruptly from 2.78 to 0.20 cm 3 mol -1 K upon cooling from 300 to 200 K, which on further cooling, reaches a minimum value of 0.08 cm 3 mol -1 K at 100 K. These results confirmed a thermo-induced SCO with T1/2 = 267 K in 2 (Fig. ). Photo-induced SCO between LS and photo-induced metastable HS states were also investigated using laser-light irradiation at 2 K for complex 2, where the LIESST effect was observed under irradiation with light of 671 nm wavelength with a conversion of 21.3% and TLIESST = 60 K. Photo-induced HS state was further characterized by the IR studies by the appearance of  NC stretching vibration at 2080 cm -1 .