The First Non-Pyrolytic Synthesis of a Semibuckminsterfullerene
作者:Andrzej Sygula、Peter W. Rabideau
DOI:10.1021/ja9828760
日期:1998.12.1
“Fullerene fragments:” Synthesis and crystal structure determination of 1,4,5,6,7,10,11,12-octamethylindeno[1,2,3-cd]fluoranthene
作者:Andrzej Sygula、Frank R. Fronczek、Peter W. Rabideau
DOI:10.1016/s0040-4039(97)01135-0
日期:1997.7
The title C30H28 hydrocarbon, a potential precursor for the synthesis of buckybowls and carbon cages, is synthesized from 2,3,6,7-tetramethylnaphthalene in eight steps. X-ray crystalstructuredetermination shows a significant distortion of its molecular framework due to steric hindrance of the attached methyl groups. The twisted conformation, present in the solid state, is also predicted to be preferred
由2,3,6,7-四甲基萘分八步合成标题为C 30 H 28的碳氢化合物,它是合成巴克杯和碳笼的潜在前体。X射线晶体结构测定表明,由于所连接的甲基的空间位阻,其分子骨架发生了明显的变形。根据半经验AM1计算,还预测存在于固态的扭曲构象在气相中是优选的。
Non-Pyrolytic Syntheses of Buckybowls: Corannulene, Cyclopentacorannulene, and a Semibuckminsterfullerene
作者:Andrzej Sygula、Peter W. Rabideau
DOI:10.1021/ja991169j
日期:1999.9.1
Corannulene (1), cyclopentacorannulene (2), and a C30H12 semibuckminsterfullerene (3) have been prepared by non-pyrolytic methods employing bromomethyl/dibromomethyl and/or dibromomethyl/dibromomethyl coupling with low-valent titanium or vanadium. Reductive coupling of tetrakis(dibromomethyl)fluoranthene (8) with vanadium(III) chloride and lithium aluminum hydride affords corannulene in 70−75% yield