摘要:
Treatment of [U(COT)(BH4)(2)(THF)] (1) or [U(COT)(BH4)(THF)(2)][BPh4] (2) (COT = eta-C8H8) with Ktmp (tmp. eta-C4Me5P) gave [U(COT)(tmp)(BH4)(THF)] (4), the crystal structure of which was determined. Further reaction of Ktmp with 4 afforded the "ate" addition derivative K[U(COT)(tmp)(2)(BH4)(THF)(x)] Complex 4 was transformed into [U(COT)(tmp)(OEt)] (5) in the presence of NaOEt. The cationic compound [U(COT)(tmp)(HMPA)(2)][BPh4] (6) (HMPA, hexamethylphosphoramide) was isolated from the reaction of [U(COT)(HMPA)(3)][BPh4](2) (3) with Ktmp. The cationic complexes 2 and 3 were recovered upon protonation of 4 and 6 with NEt3HBPh4. (C) 2002 Elsevier Science B.V. All rights reserved.