Lewis-base-dictated structural variations in sodium amide chemistry: X-ray crystal structures of phenyl(2-pyridyl)amidosodium with hexamethylphosphoric triamide (HMPA) and with pentamethyldiethylenetriamine (PMDETA)

P C ANDREWS, W CLEGG, Robert Mulvey

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Two crystalline adducts of sodium amide 1 and 2 adopt contrasting binuclear structures, as revealed by X-ray diffraction. Thus, the bidentate anions are linked to the Na+ ions in a terminal manner in 1 but in a bridging manner in 2. Each structure also displays unusual donor-acceptor coordinations, with HMPA bridging to Na+ in 1, while only two of the three available PMDETA nitrogen centers complex to Na+ in 2.

Original languageEnglish
Pages (from-to)1440-1441
Number of pages2
JournalAngewandte Chemie International Edition
Issue number12
Publication statusPublished - Dec 1990


  • complexes
  • ligands
  • ring
  • crystalline adducts
  • crystal structures

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