A Synthesis, crystal structure and properties of tris(benzene-1.2-diamine-N,N′)-cadmium naphthalene-1.5-disulfonate trihydrate complex compound

Synthesis, crystal structure and properties of tris(benzene-1.2-diamine-N,N′)-cadmium naphthalene-1.5-disulfonate trihydrate complex compound

Abstract

In this research work, for the first time, tris(benzene-1.2-diamine-N,N′)-cadmium naphthalene-1.5-disulfonate trihydrate ([Cd(OPD)₃]1,5-NDS·3H₂O) complex was synthesized. The molecular and crystal structures of the synthesized complex were studied using the RTT method. In the crystal structure of the [Cd(OPD)₃]1,5-NDS·3H₂O complex, 3 OPD molecules are chelated to the central Cd(II) ion in the inner sphere. In the outer sphere, there are 1,5-NDS and 3 water molecules. The crystal structure of the complex compound is monoclinic, the spatial group is P21/c, and the spatial shape is distorted octahedral. In the crystal structure of the molecule, there are internal and intermolecular hydrogen bonds of the type O−H...O, N−H...O and C−H...O. For the first time, Hirshfeld surface analysis of this complex compound was performed using the Crystal Explorer program. In this case, H...H (42%), O...H/H...O (32.6%) and H...N/N...H (23.5%) Van Der Waals forces in the molecule form the main interactions. Also, the physicochemical properties of this complex compound were studied using IR-spectroscopic and thermal analysis. In the thermal analysis of the complex, 2 endothermic effects were observed, and mass reduction took place in 4 stages.