Possible intermolecular association in triphenyltin chloride in the solution state as detected by NMR spectroscopy

• Published in: Magnetic resonance in chemistry 2011-11, Vol.49 (11), p.749-752
• Main Authors: Ng, Soon, Sathasivam, Renuka V., Lo, Kong Mun
• Format: Article
• Language: English
• Subjects: 119Sn; 13C spin-lattice relaxation time (T1); 13 C; Carbon; Chlorides; Isotopes; Magnetic Resonance Spectroscopy; Mathematical models; NMR; NMR spectroscopy; Nuclear magnetic resonance; Organotin Compounds - analysis; Phenyls; Solutions; Spin-lattice relaxation; Stacking; Tin; triphenyltin chloride in solution state; π-π stacking interactions
• ISSN: 0749-1581; 1097-458X; 1097-458X
• DOI: 10.1002/mrc.2827

NMR measurements (119Sn chemical shift, line width and 13 C relaxation) were made on triphenyltin chloride in two solutions, 2.5 and 0.75 mol% in CDCl3, at several temperatures. The 13 C spin–lattice relaxation time and NOE data for the phenyl carbons provide the corresponding correlation times for the overall molecular reorientational motion and the internal rotation of the phenyl groups. The results are indicative of a weak intermolecular association of the triphenyltin chloride molecules in solution and are discussed with reference to a model for intermolecular phenyl ring π–π stacking interactions. Copyright © 2011 John Wiley & Sons, Ltd. NMR measurements (119Sn chemical shift and linewidth, 13C spin–lattice relaxation times T1 and nuclear Overhauser effect) were made on triphenyltin chloride in two solutions in CDCl3 at several temperatures. Correlation times for the internal rotation of the phenyl groups and the molecular tumbling motion are calculated. The results are consistent with π–π stacking interaction in triphenyltin chloride in the solution.