Tetraethynylethenes: Fully cross-conjugated ?-electron chromophores and molecular scaffolds for all-carbon networks and carbon-rich nanomaterials
作者:John Anthony、Armen M. Boldi、Yves Rubin、Markus Hobi、Volker Gramlich、Carolyn B. Knobler、Paul Seiler、Fran�ois Diederich
DOI:10.1002/hlca.19950780104
日期:1995.2.8
isolated in pure form, whereas derivatives with two or more free CH termini were only stable in dilute solution and polymerized rapidly in pure form. A trans-bis(triisopropylsilyl)-protected derivative represented an exception and could be isolated as stable crystals. X-Ray analysis revealed that the two bulky (i-Pr)3Si groups isolate the reactive chromophores from one another in the crystal and prevent