Drx 250 avance instrument

The melting point of synthesized compound 3 (1,10-phenanthroline-5,6-diimine) was measured using the Barnstead Electrothermal 9200 apparatus and the IR spectrum was obtained using the Thermo-Nicolet Nexus 670 FT-IR spectrometer. Additionally, the ¹H and ¹³CNMR spectra for compound 3 were recorded on a BRUKER DRX-250 AVANCE instrument using DMSO-d₆ as the solvent and TMS as the internal standard at 250 MHz. 1,10-phenanthroline-5,6-dione was synthesized according to the previously reported procedure^{13 (link),24 (link),44 (link)}. The chemicals 2-Picolylamine, Sulfuric acid and solvents were purchased from Merck and Sigma-Aldrich companies and used without further purification.

All reactants used in this research were purchased from Merck, Fluka, or Sigma-Aldrich chemical companies. The melting points were defined using a Barnstead Electrothermal 9100 in capillary tubes. The infrared (IR) spectra of samples were recorded in KBr pellets using a VRTEX 70 spectrophotometer (Bruker, Germany). ¹³C and ¹H NMR spectra (in Hertz) were obtained using a Bruker DRX-250 AVANCE instrument in DMSO-d₆ as the solvent and TMS as the internal standard. Energy-dispersive X-ray spectroscopy (EDX) and scanning electron microscopy (SEM) were carried out and utilized a Czech TESCAN instrument. Thermogravimetric analysis (TGA) was performed using a thermogravimetric analyzer (PerkinElmer-STA6000, USA), and magnetic measurements of the nanocatalyst were obtained using a vibrating sample magnetometer (VSM; MDKB). X-ray diffraction (XRD) was carried out using a Holland Philips PW1730 and TEM of the magnetic nanoparticles (MNPs) was recorded with a Philips-EM 208S TEM.