Structural Origin of the Formation of Odd-Numbered Carbon Clusters from Fullerene Derivatives

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2000,（6）
• 页码范围: 419-421
• 页数: 3页
• 语种: 英文

摘要

We report the mass spectrometric investigation on fullerene derivatives C60CH2, C60RH, C60R2(R= C6H5 CO-)and C60On under the 308nm laser ablation. In the negative ion mass spectra of C60CH2 C60R2, and C60On,odd-numbered clusters C57-,C55-, C53-, C51- are observed clearly in addition to the even-numbered fullerene fragment ions, while for the monoadduct C60RH, odd-numbered species can not be detected. In the positive ion channel, the fragmentation patterns of the three derivatives are similar. A mechanism related to the structural characteristics of the derivatives is supposed for the odd-numbered duster formation. The 3-membered ring formed on the C60 cage is thought of to play a vital role for the formation of odd-numbered carbon clusters.