1 2 propanediamine

The research chemicals and solvents (CH₃OH, DCM, and
DMSO) used in this study were of reagent grade
and were used without further purification. Zn(OAc)₂.2H₂O (98%), KOCN (potassium cyanate) (96%), ortho vanillin (C₈H₈O₃) (99%), 1,2-propane
diamine (99%), DCM (dichloromethane) (99.8%), and DMSO (99.9%) were
purchased from the Sigma-Aldrich Company, USA.

Most of the research chemicals and solvents used in the current research works were reagents graded and used without further purification. The substances such as Cd(OAc)₂·2H₂O, DCM (dichloromethane), NaSCN, Ortho vanillin, salicylaldehyde, 1,2-propanediamine, and ethylenediamine were purchased from the Sigma-Aldrich Company, USA. Elemental (CHN) compositions were analyzed using a PerkinElmer 2400 CHN elemental analyzer. FT-IR/Raman spectra were recorded via KBr pellets (4000–400 cm⁻¹) using PerkinElmer spectrum RX 1 and BRUKER RFS 27 (4000–50 cm⁻¹) models. ¹H/¹³C NMR spectral analyses were performed on Bruker 400 MHz and 75.45 MHz FT-NMR spectrometers using TMS as an internal standard in DMSO-d₆ solvent. The EDX experiment was carried out on an EDX OXFORD XMX N using a W filament. The SEM images were recorded by a JEOL Model JSM-6390LV. A BRUKER AXS model and a GERMANY D8 FOCUS model with Cu Kα₋₁ radiation were used to perform PXRD. UV-visible spectra (200–1100 nm) were recorded using the popular Hitachi U-3501 spectrophotometer model.