349453-18-5Relevant academic research and scientific papers
Concave butterfly-shaped organometallic hydrocarbons?
Laskoski, Matthew,Roidl, Gaby,Smith, Mark D.,Bunz, Uwe H. F.
, p. 1460 - 1463 (2007/10/03)
A metamorphosis of the tetraethynyl precursor 1 through double Cu-catalyzed ring closure leads to the corresponding butterfly-shaped cyclobutadiene complexes 2 in high yield (94%). Single-crystal X-ray diffraction shows that the large organic ligand is distinctly nonplanar with a concave topology. Cp = cyclopentadiene.
