Effects of existence form and concentration of PbO on the conductivity of choline chloride–urea deep eutectic solvent
| Autor: | Juanjian Ru, Yixin Hua, Cunying Xu, Li Jian, Cancan Qi, Ding Wang, Yafei Jie, Li Yan |
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| Rok vydání: | 2014 |
| Předmět: |
Orbital hybridisation
Inorganic chemistry Conductivity Condensed Matter Physics Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Ion Deep eutectic solvent chemistry.chemical_compound chemistry Electrical resistivity and conductivity Materials Chemistry Physical and Theoretical Chemistry Lone pair Spectroscopy Lead oxide Choline chloride |
| Zdroj: | Journal of Molecular Liquids. 199:208-214 |
| ISSN: | 0167-7322 |
| Popis: | The effects of existence form and concentration of lead oxide (PbO) on the conductivity and viscosity of choline chloride (ChCl)-urea deep eutectic solvent (DES) were investigated. The ESI-MS and FT-IR analyses indicated that three-coordinated complexes are presented in the form of {[PbO∙CO(NH2)2]∙Cl−}−. It is deduced that the complex anions are formed through sp3 hybrid orbitals of Pb2 + ion and three sp hybrid orbitals are all filled with lone pair electrons which are donated by Cl−, O2 − and O atoms of urea respectively. The raising of temperature leads to the electrical conductivity increases. With PbO concentration, however, the conductivity increases firstly and then decreases. The viscosity has an opposite change trend compared with the conductivity. These experimental phenomena can be explained by the formation of PbO-containing complexes and oligomers. |
| Databáze: | OpenAIRE |
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