301317-63-5Relevant articles and documents
Synthesis and molecular structure of a dilithium salt of the cis-diphenylcyclobutadiene dianion
Matsuo, Tsukasa,Mizue, Takeru,Sekiguchi, Akira
, p. 896 - 897 (2000)
The cis-diphenyl-substituted cyclobutadiene cobalt complex (1), prepared from the reaction of 1,8-diphenyl-3,6-disila-1,7-octadiyne with CpCo(CO)2, reacted with lithium metal in tetrahydrofuran (THF) to yield pale orange crystals of the dilithium salt of the cis-diphenylcyclobutadiene dianion (2). The structure was determined by spectroscopic methods and X-ray crystallography to reveal the aromatic character of the doubly-charged four-membered ring system.