Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 20, Issue 52, Pages 17292-17295Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201404880
Keywords
adsorbed phosphine oxides; silica; solid-state NMR spectroscopy; surface chemistry
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Funding
- Welch Foundation [A-1706]
- National Science Foundation [CHE-0911207, CHE-1300208, CHE-1153085, CHE-0840464]
- APPEAL Consortium
- NSF
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1153085, 1300208] Funding Source: National Science Foundation
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Solid-state NMR spectroscopy of selected phosphine oxides adsorbed on silica surfaces establishes the surface mobilities, even of phosphine oxides with high melting points. Crystal structures of the adducts Ph3PO center dot HOSiPh3 and Cy3PO center dot H2O indicate that the interactions with silica involve hydrogen bonding of the P=O group to adsorbed water and surface silanol groups.
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