Synthesis and molecular structure of a mononuclear barium aryloxide-ethanolamine complex, Ba(2,6-tert-Bu2C6H3O)2(HOCH2CH2NMe2)4.cntdot.2C7H8, exhibiting extensive hydrogen bonding

The reaction of barium metal granules in tetrahydrofuran with 2,6-di-tert-butylphenol, utilizing gaseous ammonia as a catalyst, followed by addition of hexamethylphosphoramide, yields a monomeric barium species. The corresponding reaction of barium metal granules, 2-(dimethylamino) ethanol, and 2,6-di-tert-butylphenol in toluene yields an identical compound. The species has been characterized by IR, 1 H NMR and 13 C NMR spectroscopy and single-crystal X-ray studies