Synthesis and Characterization of Coordination Compounds of Silver(I) Nitrite with Ligands Ethylenethiourea and N,N'-diethylthiourea

Abstract

Coordination compound of silver (I) nitrate and ethylenethiourea (etu) in 1 : 4 stochiometry have been reported [1]. Coordination compound A and B being silver (I) nitrite with etu and silver(I) nitrite with N,N'-diethylthiourea (detu) respectively, have never been done. The purpose of this study is to synthesize and characterize coordination compounds A and B. Synthesis of coordination compounds A with 1 : 4 and B with 1 : 2 ratio stoichiometry respectively. Both of synthesis was conducted in acetonitrile directly. The obtained compound characterized by using melting point, electrical conductivity measurement, Scanning Electron Microscopy Energy-dispersive X-ray spectroscopy (SEM-EDX), qualitative nitrite test, free energy calculation and structures prediction using Spartan'14 v1.1.0. Coordination compounds of A and B have been investigated that it had colorless needle and prism crystals, having the melting point of 189°C and 103-105°C, free energy of -289.2567 and -1182.8101 kJ/mol respectively. Electrical conductivity measurement and qualitative nitrite test showed that the obtained compound for A is ionic and for B is molecular. EDX analysis gave empirical formula prediction for two coordination compounds, where A is C 12 H 24 AgN 9 O 2 S 4 and for B is C 15 H 36 AgN 7 O 2 S 3 .

Modern Analytical Chemistry Methods for Chalcogen Materials Analysis and Characterization

“…More study of the spectra confirmed the shape of crystalline compounds together with UV-Visible and infrared as well as magnetic susceptibility measurement. In other synthesis the X-ray spectra were used to calculate reactive tendency as well as shape of molecules [23][24][25] besides characterization. Another X-ray technique is the energy dispersive analysis by X-rays (EDX) which intensity is proportional to the amount of the elements.…”

“…Another X-ray technique is the energy dispersive analysis by X-rays (EDX) which intensity is proportional to the amount of the elements. The method is commonly combined with scanning electron microscopy (SEM) to get pre-experimental data, before the variables are given [22,24,26] or to characterize and give elemental confirmation [62].…”

“…Thicker samples result in decreasing energy of the electron beams and increasing the scattering as well as complexity from the bigger distribution of energy and at the end declined resolution is obtained. Most of the synthetic chalcogen materials or metal chalcogenides are firstly being visualized with the aid of SEM and TEM before any other theoretical modeling or use of methods for analysis [15,20,24,50,56,62,[68][69][70].…”

“…All compounds with oxygen can be essentials and contribute most of the chalcogen materials. The materials can be as simple as silica, as an example of oxygen compounds was made for some important application [20] or macromolecule like cellulose or its derivates [21] which is applicable in daily life and will be so still in the future, to a more complicated complexed compounds [22][23][24][25][26] or advanced materials [27][28][29] which are made for the sake of science and method development.…”

“…Abundant materials are naturally in existence with oxygen, and also a lot is being derived from synthesis in the laboratory [20][21][22][23][24][25][26]30].…”