diarsadicarbaboranes 7,8,9,11-As2C2B7H9 (2) and 7,9,8,10-As2C2B7H9 (3). Isolated were also halogenated derivatives of 2, 3-Cl-7,8,9,11-As2C2B7H8 (3-Cl-2) and 3-I-7,8,9,11-As2C2B7H8 (3-I-2). The presence of Et3N·BH3 in the reaction mixture increased the yield of unsubstituted compounds and suppressed the formation of halogenated species. The reaction between the isomeric carborane arachno-4,5-C2B7H13 (4) and
之间的反应蛛网膜下腔-4,6--C 2乙7 ħ 13 (1)和AscI 3或ASI 3在CH 2
氯2在
PS的存在(
PS =“质子海绵”,1,8-双(二
甲基氨基)
萘)分离出母体异构体十一-顶点nido diarsadicarbaboranes 7,8,9,11-As 2 C 2 B 7 H 9 (2)和7,9,8,10-As 2 C 2 B 7高9 (3)。还分离出2,3 -Cl-7,8,9,11-As 2 C 2 B 7 H 8 (3-Cl- 2)和3-I-7,8,9,11-As 2的卤代衍
生物C 2 B 7 H 8 (3-I- 2)。反应混合物中Et 3 N·BH 3的存在增加了未取代化合物的产率,并抑制了卤代物质的形成。
碳硼烷芳构异构体-4,5-C 2 B 7 H 13 (4)与AsCl 3在CH中的反应在
PS的存在下2 Cl 2给出了另一种异构体, nido -7,8,9,10-As