文摘
A series of the heavier alkaline earth (AE) aryloxides were synthesized from the reaction of the metal (AE¡ã) or the ¡®AE(ONep)2¡¯ (ONep = neo-pentoxide) precursor with a series of 2,6-di-alkyl phenols (alkyl = methyl (H-DMP), iso-propyl (H-DIP), tert-butyl (H-DBP)). These products were crystallographically characterized as: [(py)3(DMP)Sr(¦Ì-DMP)]2¡¤py (1), [Sr(DIP)2(py)4] (2), [Sr(DBP)2(py)3] (3), [(py)3Ba(¦Ì-DMP)3Ba(DMP)(py)2][Ba[(¦Ì-DMP)3Ba(py)3]2] (4), and [Ba(OAr)2(py)n] where OAr = DIP, n = 4 (5), DBP, n = 3 (6). In some instances AE-oxide alkoxides were crystallographically identified and have been preliminarily identified by single crystal X-ray diffraction. NMR data showed a single set of resonances for 1-6, which argues for monomeric species to exist in solution.