Analytical, Spectral, Thermal and Molecular Modeling Studies of Hg²⁺-2,3-Butanedionemonoxime Girard’s T Hydrazone Complex and Its Application  

作　　者：Najlaa S. Al-Radadi Magda M. Akl Mohamed A. Elbeshlawi Mohsen M. Mostafa Najlaa S. Al-Radadi;Magda M. Akl;Mohamed A. Elbeshlawi;Mohsen M. Mostafa(Chemistry Department, Faculty of Science, Taibah University, Al-Madinah, Saudia Arabia;Chemistry Department, Faculty of Science, Mansoura University, Mansoura, Egypt)

机构地区：[1]Chemistry Department, Faculty of Science, Taibah University, Al-Madinah, Saudia Arabia [2]Chemistry Department, Faculty of Science, Mansoura University, Mansoura, Egypt

出　　处：《Open Journal of Inorganic Chemistry》2016年第1期1-14,共14页无机化学期刊（英文）

摘　　要：The coordination behavior of 2,3-butanedionemonoxime Girard’s T hydrazone (L¹) towards Hg²⁺ ion has been investigated. The structure of Hg²⁺ complex, [Hg(L¹)Cl]Cl·5H₂O, is elucidated using elemental analyses, spectral (IR, UV-visible, 1H-NMR and mass) and TGA measurements. IR spectrum suggests that L¹ behaves in a bidentate manner through the azomethine groups. The molecular modeling of L¹ and its Hg²⁺ complex has been investigated. The bond lengths, bond angles, HOMO and LUMO have been calculated. The thermal behavior and kinetic parameters are determined using Coats-Redfern method. The use of L¹ for preconcentration and separation via flotation of Hg²⁺ complex and determination using cold vapor atomic spectrometry (CVAAS) is described. The effects on the percentage of recovered Hg²⁺ by pH of sample solutions, oleic acid (HOL) concentration, Hg²⁺ and L¹ concentrations are studied in details. The method is applied for the determination of the total Hg²⁺ (mg·mL^-1) in natural water samples.The coordination behavior of 2,3-butanedionemonoxime Girard’s T hydrazone (L¹) towards Hg²⁺ ion has been investigated. The structure of Hg²⁺ complex, [Hg(L¹)Cl]Cl·5H₂O, is elucidated using elemental analyses, spectral (IR, UV-visible, 1H-NMR and mass) and TGA measurements. IR spectrum suggests that L¹ behaves in a bidentate manner through the azomethine groups. The molecular modeling of L¹ and its Hg²⁺ complex has been investigated. The bond lengths, bond angles, HOMO and LUMO have been calculated. The thermal behavior and kinetic parameters are determined using Coats-Redfern method. The use of L¹ for preconcentration and separation via flotation of Hg²⁺ complex and determination using cold vapor atomic spectrometry (CVAAS) is described. The effects on the percentage of recovered Hg²⁺ by pH of sample solutions, oleic acid (HOL) concentration, Hg²⁺ and L¹ concentrations are studied in details. The method is applied for the determination of the total Hg²⁺ (mg·mL^-1) in natural water samples.

关 键 词：Mercury Complex 2 3-Butanedionemonoxime Girard’s T Hydrazone Modeling Spectral Studies Separation Using Flotation Method 

分 类 号：O62[理学—有机化学]