Hydrogen-1 nuclear magnetic resonance studies of the ion association of some unsymmetrically substituted tetra-alkylammonium tribromo(triphenylphosphine)cobaltate(II) complexes in various solvents

Ion pairing between the paramagnetic anion [Tb(obPc) ] (obPc=2,3,9,10,16,17,23,24-octabutoxyphthalocyaninato), which has a very large magnetic anisotropy, with various diamagnetic counterions [P(Ph) ] (1 a), [As(Ph) ] (1 b), bis(triphenylphosphine)iminium ([PPN] , 1 c) and tetra-n-butylammonium ([TBA] , 1 d) was studied by means of H, C, N, and P NMR spectroscopy in solution at various temperatures. The influence of the paramagnetic anion on the NMR spectroscopy properties of the diamagnetic cations allowed a detailed insight into the distances and relative orientations of the paired ions. Isotropic tumbling models for the description of the quaternary cations are inaccurate, particularly for [TBA] with its flexible butyl chains. The effects of temperature and concentration were also assessed. The advantage of this technique is that relatively large distances and the orientation between molecules or ions in solution can be studied.

show abstract

A PMR study of the structural changes in a quaternary ammonium base cation caused by ion-pair formation

Grebenshchikov

Popov

Bagreev

et al. 1985

J Struct Chem

View full text Add to dashboard Cite

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

hi@scite.ai

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Hydrogen-1 nuclear magnetic resonance studies of the ion association of some unsymmetrically substituted tetra-alkylammonium tribromo(triphenylphosphine)cobaltate(II) complexes in various solvents

Cited by 4 publications

References 0 publications

ChemInform Abstract: HYDROGEN‐1 NUCLEAR MAGNETIC RESONANCE STUDIES OF THE ION ASSOCIATION OF SOME UNSYMMETRICALLY SUBSTITUTED TETRA‐ALKYLAMMONIUM TRIBROMO(TRIPHENYLPHOSPHINE)COBALTATE(II) COMPLEXES IN VARIOUS SOLVENTS

ChemInform Abstract: HYDROGEN‐1 NUCLEAR MAGNETIC RESONANCE STUDIES OF THE ION ASSOCIATION OF SOME UNSYMMETRICALLY SUBSTITUTED TETRA‐ALKYLAMMONIUM TRIBROMO(TRIPHENYLPHOSPHINE)COBALTATE(II) COMPLEXES IN VARIOUS SOLVENTS

How Ions Arrange in Solution: Detailed Insight from NMR Spectroscopy of Paramagnetic Ion Pairs

A PMR study of the structural changes in a quaternary ammonium base cation caused by ion-pair formation

Contact Info

Product

Resources

About