an equimolecular mixture of II and I. The anionic compounds [(dmch)2UX2][K(18-crown-6)] (X = Cl, IV; BH4, V) were synthesized by treatment of UCl4 or (mesitylene)U(BH4)3 with (dmch)K. The neutral complex (dmch)2U-(BH4)(THF) (VI) was isolated by extracting the powder of [(dmch)2U(BH4)2][K(THF)x] with pentane; VI reacted with OPPh3 to give (dmch)2U(BH4)(OPPh3) (VIII).
6,6-二
甲基环己二烯基阴离子的
钾盐(dmch)K与U(BH 4)4(I)反应生成(dmch)2 U(BH 4)2(II),而(dmch)U( BH 4)3(III)从II和I的等分子混合物中获得。阴离子化合物[(dmch)2 UX 2 ] [K(18-crown-6)](X = Cl,IV ; BH 4,V)是通过处理UCl 4或(1,3,5-三甲基)U(BH 4)3合成的与(dmch)K。用
戊烷萃取[(dmch)2 U(BH 4)2 ] [K(THF)x ]的粉末,分离出中性络合物(dmch)2 U-(BH 4)(THF)(VI)。VI与
OPPh 3反应,得到(dmch)2 U(BH 4)(
OPPh 3)(VIII)。