207Pb NMR of minium, Pb3O4: evidence for the [Pb2]4+ ion and possible relativistic effects in the Pb-Pb bond

S P Gabuda; S G Kozlova; V V Terskikh; C Dybowski; G Neue; D L Perry

doi:10.1016/s0926-2040(99)00038-7

207Pb NMR of minium, Pb3O4: evidence for the [Pb2]4+ ion and possible relativistic effects in the Pb-Pb bond

Solid State Nucl Magn Reson. 1999 Nov;15(2):103-7. doi: 10.1016/s0926-2040(99)00038-7.

Authors

S P Gabuda¹, S G Kozlova, V V Terskikh, C Dybowski, G Neue, D L Perry

Affiliation

¹ Institute of Inorganic Chemistry, Novosibirsk, Russian Federation.

PMID: 10670902
DOI: 10.1016/s0926-2040(99)00038-7

Abstract

Solid Pb3O4 has been studied with 207Pb nuclear magnetic resonance (NMR) spectroscopy. The 207Pb NMR chemical-shift tensor of the Pb2+ site has principal values of delta11 = 1980 +/- 5 ppm, delta22 = 1540 +/- 5 ppm, and delta33 = -1108 +/- 10 ppm; delta(iso) = 804 +/- 10 ppm. The chemical-shift tensor of the Pb4+ site is axial, with principal values delta(parallel) = -1009 +/- 3 ppm and delta(perpendicular) = 1132 +/- 3 ppm; delta(iso) = -1091 +/- 3 ppm. The Pb4+-Pb2+ scalar coupling constant J(Pb-Pb) = 2.3 +/- 0.1 kHz. The main contribution to the Pb2- chemical-shift anisotropy is proposed to arise from an exchange interaction in the Pb2+-Pb2+ pairs, conventionally regarded as molecular [Pb2]4+ ions.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

Cations / chemistry
Lead / chemistry*
Magnetic Resonance Spectroscopy*

Substances

Cations
Lead
lead tetroxide