Complexes of dibenzylsulfoxide with lanthanide nitrate |
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| Institution: | 1. Low-Carbon Technology and Chemical Reaction Engineering Laboratory, School of Chemical Engineering, Sichuan University, Chengdu 610065, PR China;2. School of Environmental and Chemical Engineering, Xi’an Polytechnic University, Xi’an 710048, PR China;1. MTA-DE Homogeneous Catalysis and Reaction Mechanisms Research Group, Egyetem tér 1, H-4032, Hungary;2. Department of Inorganic and Analytical Chemistry, University of Debrecen, Egyetem tér 1, H-4032, Hungary;1. Applied Chemistry Research Laboratory, Department of Chemistry, Faculty of Basic Science, Azarbaijan Shahid Madani University, P.O. Box 83714-161, Tabriz, Iran;2. New Technologies in the Environment Research Center, Azarbaijan Shahid Madani University, P.O. Box 83714-161, Tabriz, Iran;3. Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471, Tabriz, Iran;4. Applied Chemistry Research Laboratory, Department of Chemistry, Faculty of Science, University of Zanjan, Zanjan, Iran;5. Рeoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, Moscow, 117198, Russian Federation;6. Research Laboratory of Environmental Protection Technology, Faculty of Chemistry, Department of Applied Chemistry, University of Tabriz, Iran |
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| Abstract: | A new series of dibenzylsulfoxide (DBSO) compounds of empirical formula Ln(DBSO)x(NO3)3] are reported, where x = 3 for Ln = Pr; x = 2.5 for Ln = Nd, Sm, Eu, Gd, Er and La; and x=2 for Ln = Dy. The compounds were synthesized from a non-aqueous solvent and isolated as dibenzylsulfoxide salts. Infrared spectral data established coordination by the anion groups and also that coordination of DBSO is through the oxygen. Additional information based on the nature of bonding and geometrical structure was obtained from the electronic absorption spectra, X-ray diffraction analysis, molecular conductivities and molecular weight measurements (as well as magnetic susceptibility measurements). All these physical measurements indicate octahedral coordination. The 20% decrease in the metal ion radius across the lanthanide series and the competition between DBSO and nitrate groups for the coordination site affect the number of DBSO molecules bonded to a tripositive lanthanide ion. |
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