Bis(Tetramethylselenophosphoramidoyl) Methylamine Complexes of Cd(Ii) and Zn(Ii): Synthesis and Multinuclear (31P, 77Se, and 113Cd) Nmr Characterization in Solution

• Published in: Phosphorus, sulfur, and silicon and the related elements sulfur, and silicon and the related elements, 2012-12, Vol.187 (12), p.1490-1497
• Main Authors: Bennis, Meriem, Alouani, Khaled
• Format: Article
• Language: English
• Subjects: Cadmium; Cadmium complex; zinc complex; Bis(N,N,N′,N′-tetramethylselenophosphorami- doyl)methylamine; Cd NMR; Ligands; Nitrates; NMR; Nuclear magnetic resonance; Se, and; Spectrum analysis
• ISSN: 1042-6507; 1563-5325
• DOI: 10.1080/10426507.2012.690120

Five new complexes ZnL 2 (ClO 4 ) 2 (1), CdL 2 (ClO 4 ) 2 (2), CdL 2 (BF 4 ) 2 (3), CdLCl 2 (4), and CdL(NO 3 ) 2 (5) [L = ((Me 2 N) 2 PSe) 2 NMe] have been synthesized and characterized by elemental analysis, infrared (IR) and multinuclear ( 31 P, 77 Se, and 113 Cd), and nuclear magnetic resonance (NMR) spectroscopy. The 31 P and 77 Se NMR data showed that the title ligand is coordinated in a bidentate fashion to the metal center via its both P=Se groups. The solution structure of the cadmium complexes was further confirmed by its 113 Cd NMR spectra, which displayed a quintuplet for the perchlorate complex and a triplet for each of the nitrate and chloride complexes, respectively due to coupling with four (two ligands) and two (one ligand) equivalent phosphorus nuclei, consistent with a four-coordinate tetrahedral geometry for the cadmium center. The results are discussed and compared with the corresponding oxo and thio analogues.