Fariati, I. Wayan Dasna, Yolanda Faradilla Fadli, Siti Hartinah Qurbayni
Study of complex compounds structures of zinc(II) chloride and cadmium(II) chloride with potassium cyanide and N,N'-diethylthiourea (detu) as compound A and B, respectively, have not been reported. Therefore, the synthesize of those complex compounds had been carried out to study their structure prediction. In this research, compounds A and B were prepared by means of the direct method using distilled-water and methanol solvent. The melting point measurement of compounds A and B gave 203-205 °C and 210-213 °C at ambient pressure, respectively. Structure prediction and free energy calculation of the A and B complexes used Semi-Empirical PM6. Both complexes gave the calculated free energy as-129.605 kJ/mol and-381.0029 kJ/mol with tetrahedral geometry of metal ion, respectively. The electric conductivity test proposed that compound A is ionic, while compound B is molecular. The atomic ratio between the central atom and sulfur as atom donor regarding the EDX analysis for both compounds was 1:4 and 1:1, respectively. The prediction on chemical formula of A was [Zn(detu)4](CN)2 and B was [(CN)(detu)Cd(µ-CN)2Cd(CN) (detu)]. © 2020 Author(s).
Department of Chemistry, Faculty of Mathematics and Natural Science, Universitas Negeri Malang, Jl. Semarang 5, Malang, East Java, 65145, Indonesia
