Jalilehvand, FaridehAmini, Zahra2012-09-282012-11-132012-09-282012Amini, Z. (2012). Cadmium (II) Complex Formation with N-Acetylcysteine, Selenourea and Thiourea in Solution (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/25190http://hdl.handle.net/11023/240Cd(II) complexes with N-acetylcysteine (H2NAC), selenourea (SeU), and thiourea (TU) in solution were investigated using NMR and XAS spectroscopic techniques. From the Cd K-edge EXAFS spectrum of a Cd(II)-SeU methanol solution at 200 K containing CCd(II)=0.1 M and CSeU≥0.4 M, the local structure of a Cd(SeU)4 tetrahedral species with Cd-Se bond distance of was determined. NMR measurement of this solution shows a single sharp peak at 578 ppm, which is in agreement with the reported speciation. For Cd(II)-SeU solutions with a lower concentration of selenourea, a mixture of species was observed. NMR spectra of Cd(II)-TU solutions revealed a mixture of species at low TU/Cd(II) mole ratios. The structures of these complexes were determined using Cd K-edge EXAFS spectroscopy, LIII-edge XANES, and NMR. Cd(II)-N-acetylcysteine solutions with CCd(II) = 0.1 M and NAC/Cd(II) mole ratios of 2.0–20.0 at pH = 7.5 and 11.0 have been investigated. They show a mixture of CdS3O3, CdS3O, and CdS4 species at low NAC concentration and species at high NAC concentration.engUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.ChemistryInorganic ChemistrySpectroscopymaster thesis10.11575/PRISM/25190