A 207Pb NMR study of the adducts of triphenyllead chloride and diphenyllead dichloride

207Pb NMR spectra were used to determine the structure of adducts of triphenyllead chloride and diphenyllead dichloride in CH2Cl2 and CH3CN. The bases included several phosphorus donors, such as tributylphosphine, oxygen donors, such as tributylphosphine oxide, and nitrogen donors, such as pyridine....

Full description

Saved in:
Bibliographic Details
Published in:Applied organometallic chemistry 2003-04, Vol.17 (4), p.236-238
Main Authors: Margolis, Lara A., Schaeffer Jr, Charles D., Yoder, Claude H.
Format: Article
Language:English
Subjects:
207Pb
adduct
Chemistry
Exact sciences and technology
Ge, sn, pb derivatives
lead
Lewis acid
NMR
Organic chemistry
Organometalloidal and organometallic compounds
Preparations and properties
triphenyllead chloride
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:207Pb NMR spectra were used to determine the structure of adducts of triphenyllead chloride and diphenyllead dichloride in CH2Cl2 and CH3CN. The bases included several phosphorus donors, such as tributylphosphine, oxygen donors, such as tributylphosphine oxide, and nitrogen donors, such as pyridine. A number of bidentate bases were also studied. The 207Pb spectra indicate that rapid exchange occurs in the adducts, even at temperatures of −90 °C. The magnitude of the shift relative to the lead acid indicates that all of the bases, including the bidentate bases, form five‐coordinate adducts with triphenyllead chloride. Diphenyllead dichloride forms six‐coordinate adducts, except for the adduct with tributylphosphine, which is five‐coordinate. This is the first report of a five‐coordinate adduct of diphenyllead dichloride. Copyright © 2003 John Wiley & Sons, Ltd.
ISSN:0268-2605
1099-0739
DOI:10.1002/aoc.412