The magnetic susceptibility measurements were performed with Quantum Design MPMS-XL EverCool SQUID Magnetometer, between 1.9 K and 350 K for dc applied fields ranging from -5 T to + 5 T. Polycrystalline sample of 1•2DMF•H2O (16.8 mg) introduced in a polypropylene bag (2.9 × 0.6 × 0.02 cm) were subjected to measurements. The temperature- Please do not adjust margins Please do not adjust margins dependent data were measured using 10000 Oe dc field. The isothermal magnetization data were acquired at 2, 5 and 6 K. M vs H measurements were performed at 100 K to check for the presence of ferromagnetic impurities which were found to be absent. The magnetic data were corrected for the sample holder and the diamagnetic contribution. The ac susceptibility measurements were measured with an oscillating ac field of 3 Oe with frequency between 1 to 1500 Hz. (Photo)Magnetic measurements were carried out by using a sample holder inside the Quantum Design MPMS-XL EverCool SQUID magnetometer equipped with an optical fiber. In a typical experiment, 1.5 mg of finely ground crystals were deposited on an adhesive tape. The sample was separated from the end of the optical fiber by 6.5 cm. All the irradiations were carried out at 10 K to minimize the temperature variation induced by the light. The experimental data were corrected for the diamagnetic contribution of the constituent atoms as well as by the residual diamagnetic signal from the holder. Note that the temperatures have been corrected to consider the light irradiation heating. Experimental susceptibilities were corrected for sample holder and intrinsic diamagnetic contribution.