Ammoniacal Synthesis of Lanthanum Aryloxide Complexes and Observation of a Unique Interconversion between Oxygen- and η-Arene-Bridged Dimeric Species. X-ray Crystal Structures of La2(OAr)6(NH3)n (n = 0, 2), La(OAr)3(NH3)4, and La(OAr)3(THF)2 (Ar = 2,6-i-P

Article abstract of DOI:10.1021/ic00126a016

Reaction of LaCl3 with 3 equiv of sodium metal in liquid ammonia at -78°C, followed by addition of 3 equiv of HOAr (Ar = 2,6-i-Pr2C6H3) in toluene produces La(OAr)3(NH3)x (1) after warming to room temperature. Dissolution of 1 in toluene followed by 6 h r