Ft ir spectrophotometerin

Melting points were determined
on an electrothermal melting point apparatus and are reported uncorrected.
The completion of the reaction and purity of all compounds were checked
on aluminum-coated TLC plates 60 F₂₅₄ (E. Merck) using
chloroform/methanol (9.5:0.5 v/v) as the mobile phase and visualized
under ultraviolet (UV) light or iodine vapor. Elemental analysis (%
C, H, N) was carried out by a Perkin-Elmer 2400 CHN analyzer. IR spectra
of all compounds were taken on a Perkin-Elmer FT-IR spectrophotometer
in KBr. ¹H NMR and ¹³C NMR spectra were recorded
on Bruker (400 MHz) and (100 MHz) spectrometers, respectively, using
DMSO-d₆ as a solvent and TMS as an internal
standard. Chemical shifts are reported in parts per million (ppm).
A mass spectrum was scanned on a Shimadzu LC–MS 2010 spectrophotometer.
Anhydrous reactions were carried out in oven-dried glassware in a
nitrogen atmosphere. Microwave-assisted synthesis was carried out
using Synthos 3000.^{34 (link)}

The FTIR spectra of
the parent components and the synthesized complex (ANNBA) were recorded
by dispersing powder samples in KBr and pelletizing them. The spectrum
of pellets was studied using a PerkinElmer FTIR spectrophotometer
in the region of 4000–400 cm^–1. The ¹H and ¹³C FT-NMR spectra of the samples were recorded
using a JNM-ECZ500R/S1 500 MHz spectrometer in DMSO-d₆ solvent.