Synthesis, crystal structure and thermal decomposition of the new cadmium selenite chloride, Cd4(SeO3)2OCl2.
A synthetic study in the Cd-Se-O-Cl system led to formation of the new oxochloride compound Cd4(SeO3)2OCl2 via solid state reactions. The compound crystallizes in the orthorhombic space group Fmmm with cell parameters a = 7.3610(3) Å, b = 15.4936(2) Å, c = 17.5603(3) Å, Z = 8, S = 0.969, F(000) = 2800, R = 0.0185, Rw = 0.0384. Single crystal X-ray data were collected at 293 K. The crystal structure can be considered as layered and the building units are distorted [Cd(1)O6] octahedra, distorted [Cd(2)O8] cubes, irregular [Cd(3)O4Cl2] polyhedra and SeO3E trigonal pyramids. There are two crystallographically unique Cl atoms that both are half occupied. Thermogravimetric studies show that the compound starts to decompose at 500°C. The crystal structure of the new compound is closely related to the previously described compound Cd4(SeO3)2Cl4(H2O).
Department of Chemistry, COMSATS Institute of Information Technology, Abbottabad, Khyber Pakhtunkhwa, Pakistan.
Faiz
F
Rabbani
Department of Chemistry, University of Engineering and Technology, Lahore, Pakistan.
Humayun
H
Ajaz
Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, Sweden.
Iwan
I
Zimmermann
Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, Sweden.
Mats
M
Johnsson
D019256:Cadmium Chloride / Q000138:chemical synthesis / Q000737:chemistry*; D019187:Cadmium Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D006358:Hot Temperature; D008956:Models, Chemical; D018036:Selenium Compounds / Q000138:chemical synthesis / Q000737:chemistry*
D019187:Cadmium Compounds; D018036:Selenium Compounds; C058667:cadmium selenide; D019256:Cadmium Chloride