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

Abstract

NMR measurements ((119)Sn chemical shift, line width and (13)C relaxation) were made on triphenyltin chloride in two solutions, 2.5 and 0.75 mol% in CDCl(3), 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.

Unveiling the flavone-solubilizing effects of α-glucosyl rutin and hesperidin: probing structural differences through NMR and SAXS analyses

“…Because 1 H chemical shifts are sensitive to changes in the local environment of a molecule, they are often used to investigate the association state of molecules and the intermolecular interactions. 65 Furthermore, concentration-dependent 1 H NMR chemical shift changes and signal broadening can be used to investigate the CMC or CAC of surfactants or aggregates and the molecular mobility. 66 For example, the solution structures of the inclusion complexes of cyclodextrin with the flavonoid catechin in D 2 O were revealed using NMR spectroscopy.…”

Nuclear spin relaxation in liquids and gases

“…It was demonstrated that the strength of the directly bonded dipolar CH interaction could be determined, in spite of the prevailing extreme narrowing conditions, if the 13 C and 1 H relaxation data were included in the fit. Ng et al 223 reported 13 C relaxation data, along with 119 Sn chemical shift and linewidth, for triphenyltin chloride in chloroform solution. The relaxation data were interpreted in terms of overall reorientation and internal rotation of the phenyl groups.…”