Quadrupole-Dipole Effects in Solid-State, CP-MAS, Tin-119 NMR Spectra ofpara-Substituted Triaryltin(pentacarbonyl)manganese(I) Complexes

Citation metadata

From: Journal of Magnetic Resonance(Vol. 131, Issue 1)
Publisher: Elsevier B.V.
Document Type: Article
Length: 204 words

Document controls

Main content

Abstract :

To link to full-text access for this article, visit this link: http://dx.doi.org/10.1006/jmre.1997.1336 Byline: Dharamdat Christendat, Ivor Wharf, Frederick G. Morin, Ian S. Butler, Denis F.R. Gilson Abstract: Solid-state, CP-MAS,.sup.119Sn NMR spectra were measured for a series ofpara-substituted triaryltin(pentacarbonyl)manganese(I) complexes. All the spectra show an asymmetric sextet due to spin-spin coupling and second-order quadrupolar effects, transmitted by dipolar coupling between the.sup.119Sn and.sup.55Mn nuclei, which are not suppressed by magic-angle rotation. The solid-state.sup.1 J.sub.Mn-Snspin-spin and nuclear quadrupole coupling constants range from 130 to 250 Hz and -8 to 21 MHz, respectively, and show an inverse linear correlation, which is attributed to the dominance of the Fermi contact contribution to the.sup.1 J.sub.Mn-Sncoupling. The tris(p-methylthiophenyl)tin derivative is an exception, attributed to a difference in crystal structure from the other complexes. The magnitudes of the principal elements of the.sup.119Sn chemical shift tensors were determined and appear to be strongly influenced by the ring torsion angles and thepara-substituents of the phenyl rings. Solid-state.sup.119Sn NMR spectroscopy provides a useful method of probing the electronic environment around the tin and manganese nuclei in transition metal complexes. Author Affiliation: Department of Chemistry, McGill University, 801 Sherbrooke St. West, Montreal, Quebec, Canada, H3A 2K6 Article History: Received 1 April 1997; Revised 25 November 1997

Source Citation

Source Citation   

Gale Document Number: GALE|A403718623