An sp-hybridized molecular carbon allotrope, cyclo[18]carbon

被引：467

作者：

Kaiser, Katharina ^{[1
]}

Scriven, Lorel M. ^{[2
]}

Schulz, Fabian ^{[1
]}

Gawel, Przemyslaw ^{[2
]}

Gross, Leo ^{[1
]}

Anderson, Harry L. ^{[2
]}

机构：

[1] IBM Res Zurich, CH-8803 Ruschlikon, Switzerland

[2] Univ Oxford, Dept Chem, Oxford OX1 3TA, England

来源：

SCIENCE | 2019年 / 365卷 / 6459期

基金：

瑞士国家科学基金会;

关键词：

SCANNING TUNNELING MICROSCOPE; CHEMICAL-STRUCTURE; CRYSTAL-STRUCTURE; ELECTRIC-FIELD; CHARGE-STATE; GENERATION; RINGS; C-60; NACL;

D O I：

10.1126/science.aay1914

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Carbon allotropes built from rings of two-coordinate atoms, known as cyclo[n] carbons, have fascinated chemists for many years, but until now they could not be isolated or structurally characterized because of their high reactivity. We generated cyclo[18] carbon (C-18) using atom manipulation on bilayer NaCl on Cu(111) at 5 kelvin by eliminating carbon monoxide from a cyclocarbon oxide molecule, C24O6. Characterization of cyclo[18] carbon by high-resolution atomic force microscopy revealed a polyynic structure with defined positions of alternating triple and single bonds. The high reactivity of cyclocarbon and cyclocarbon oxides allows covalent coupling between molecules to be induced by atom manipulation, opening an avenue for the synthesis of other carbon allotropes and carbon-rich materials from the coalescence of cyclocarbon molecules.

引用

页码：1299 / +

页数：46

共 52 条

[1] FREQUENCY-MODULATION DETECTION USING HIGH-Q CANTILEVERS FOR ENHANCED FORCE MICROSCOPE SENSITIVITY [J].