HIGH-YIELD AND FACILE CLUSTER REARRANGEMENTS IN THE ELEVEN-VERTEX NIDO SERIES OF TRICARBOLLIDES - NEW PARENT TRICARBABORANES [NIDO-7,8,10-C3B8H11](-) AND ARACHNO-5,6,9-C3B7H13

摘要

Thermal rearrangement of the zwitterionic 7-(Me(3)N)-nido-7,8,9-C3B8H10 (1a) and of the [nido-7,8,9-C3B8H11](-) anion (2) at 350 degrees C gave high yields of the isomeric tricarbollide species 10-(Me(3)N)-nido-7,8,10-C3B8H10 (3a) and [nido-7,8,10-C3B8H10](-) (4), respectively, and oxidative degradation of one boron vertex in 4 resulted in the isolation of the first parent ten-vertex tricarbaborane arachno-5,6,9-C3B7H13 (5). [References: 10]