Mpms xl 5 magnetometer

Chemicals such as nickel(ii) nitrate hexahydrate, 2-hydroxy-3-methoxybenzaldehyde, 5-nitrosalicylaldehyde, 5-bromo-3-methoxysalicylaldehyde, 2-hydroxy-1-naphthaldehyde, 4-(diethylamino)salicylaldehyde and N,N-dimethyldipropylenetriamine were commercially available reagent or analytical grade chemicals and used as received. 2-Hydroxy-3-methoxy-5-methylbenzaldehyde was synthesized following a literature reported method.^27,28 Solvents were of reagent grade and used without further purification.
Elemental analyses for carbon, hydrogen and nitrogen were carried out in a PerkinElmer 240C elemental analyser. FTIR spectra of the complexes in the range 4000 to 400 cm⁻¹ were measured in a Thermo Scientific Nicolet iS5 FTIR spectrometer using a universal ATR sampling accessory. Direct current (dc) magnetic susceptibility measurements were performed on a Quantum Design MPMS-XL-5 magnetometer under a static magnetic field of 10 kOe in the temperature range of 2 to 300 K. The field dependent magnetization data were collected in the range of dc magnetic field 0–50 kOe at 5 K. All magnetic data were corrected for the sample holder and for the diamagnetic contribution of the samples.

All reagents in the preparation procedure were of analytical reagent grade and used without any purification or degassing of solvents. Elemental analyses (C and H) were performed using a PE2400 II elemental analyzer. FT-IR spectra were recorded with a Nicolet Magna-IR 550 spectrometer in dry KBr disks in the 4000–400 cm⁻¹ range. The solid-state UV/Vis spectra were measured at room temperature using a PE Lambda 900 UV/Vis spectrophotometer. Powder X-ray diffraction (XRD) patterns were recorded in the angular range of 2θ = 5–60° on a Bruker D8 advance diffractometer using CuKα radiation. All magnetization of compounds 1–3 were obtained with a Quantum Design MPMS-XL-5 magnetometer.