A super-bulky phosphanide ligand enables the observation of scalar coupling between 31P and 7Li, 23Na, 85Rb/87Rb, and 133Cs†
- 1Main Group Chemistry Laboratories, School of Chemistry, Newcastle University Newcastle upon Tyne NE1 7RU UK
- 2Department of Chemistry, Imam Mohammad Ibn Saud Islamic University (IMSIU) Riyadh 11623 Saudi Arabia
Abstract
Scalar coupling between nuclei provides some of the most useful information available from an NMR spectrum. While scalar coupling between 31P and 6/7Li may be observed at low temperatures, or in a very small number of cases at room temperature, coupling between 31P and the remaining alkali metal nuclei has remained elusive. The super-bulky chlorophosphane (MeBhp)2PCl (1Cl) provides convenient access to the alkali metal phosphanides {(MeBhp)2P}ML [ML = Li(THF)2·1/2PhMe (1Li), Na(OEt2) (1Na), K(PhMe)·2.5PhMe (1K·Tol), K(THF)3·2PhMe (1K·THF), Rb (1Rb) and Cs(OEt2)·Et2O (1Cs·Et2O)], which crystallise with short M–P distances (except 1K·THF) and trigonal planar phosphorus centres (except 1Na). The structural features of these compounds enable the NMR observation of scalar coupling between heavier alkali metal nuclei and another nucleus (in this case 31P) for the first time.
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BibTeX
@article{hadadi2026superbulky,
title = {{A super-bulky phosphanide ligand enables the observation of scalar coupling between 31P and 7Li, 23Na, 85Rb/87Rb, and 133Cs†}},
author = {Ahmed Hadadi and Corinne Y. Wills and Casey M. Dixon and Paul G. Waddell and Keith Izod},
journal = {Dalton Transactions (Cambridge, England : 2003)},
year = {2026},
month = oct,
doi = {10.1039/d6dt02307j},
url = {https://doi.org/10.1039/d6dt02307j},
note = {CC BY 3.0},
}
RIS
TY - JOUR
TI - A super-bulky phosphanide ligand enables the observation of scalar coupling between 31P and 7Li, 23Na, 85Rb/87Rb, and 133Cs†
AU - Ahmed Hadadi
AU - Corinne Y. Wills
AU - Casey M. Dixon
AU - Paul G. Waddell
AU - Keith Izod
PY - 2026
DA - 2026/10/21
JO - Dalton Transactions (Cambridge, England : 2003)
DO - 10.1039/d6dt02307j
UR - https://doi.org/10.1039/d6dt02307j
AB - Scalar coupling between nuclei provides some of the most useful information available from an NMR spectrum. While scalar coupling between 31P and 6/7Li may be observed at low temperatures, or in a very small number of cases at room temperature, coupling between 31P and the remaining alkali metal nuclei has remained elusive. The super-bulky chlorophosphane (MeBhp)2PCl (1Cl) provides convenient access to the alkali metal phosphanides {(MeBhp)2P}ML [ML = Li(THF)2·1/2PhMe (1Li), Na(OEt2) (1Na), K(PhMe)·2.5PhMe (1K·Tol), K(THF)3·2PhMe (1K·THF), Rb (1Rb) and Cs(OEt2)·Et2O (1Cs·Et2O)], which crystallise with short M–P distances (except 1K·THF) and trigonal planar phosphorus centres (except 1Na). The structural features of these compounds enable the NMR observation of scalar coupling between heavier alkali metal nuclei and another nucleus (in this case 31P) for the first time.
SN - 1477-9226
SN - 1477-9234
ER -