气候变化领域集成服务门户(CCPortal): Cyclopropenylidenes: From interstellar space to an isolated derivative in the laboratory

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DOI	10.1126/science.1126675
	Cyclopropenylidenes: From interstellar space to an isolated derivative in the laboratory
	Lavallo V.; Canac Y.; Donnadieu B.; Schoeller W.W.; Bertrand G.
发表日期	2006
ISSN	0036-8075
起始页码	722
结束页码	724
卷号	312 期号:5774
英文摘要	Like many of the molecular species that have been detected in the interstellar medium, the singlet carbene cyclopropenylidene (C3H 2) has been presumed to be too unstable to isolate in the laboratory. However, by appending π-electron-donating amino groups to the triangular skeleton, we prepared a cyclopropenylidene derivative that is stable at room temperature. In contrast to previously isolated carbenes, this compound does not require a heteroatom adjacent to the electron-deficient carbon to confer stability. Despite the presence of amino groups, the geometric parameters of the cyclic skeleton, revealed by x-ray crystallography, are only slightly perturbed relative to those of the calculated structure of unsubstituted cyclopropenylidene. Stable cyclopropenylidene derivatives might thus serve as models for a better understanding of the formation of carbon-bearing molecules in the interstellar medium.
英文关键词	Amino acids; Derivatives; Electron emission; Thermoanalysis; X ray crystallography; Cyclopropenylidene derivatives; Interstellar medium; Interstellar space; Singlet carbene; Organic compounds; amine; carbene; carbon; cyclopropenylidene derivative; unclassified drug; amino acid; carbon; crystal structure; crystallography; electron; molecular analysis; article; atom; chemical structure; electron; geometry; laboratory; molecular model; molecular stability; priority journal; room temperature; space; synthesis; X ray crystallography; Crystallography, X-Ray; Cyclopropanes; Extraterrestrial Environment; Magnetic Resonance Spectroscopy; Molecular Structure; Temperature; Thermodynamics
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/244462
作者单位	University of California, Riverside, CNRS Joint Research Chemistry Laboratory (Unité Mixte Internationale 2957), Department of Chemistry, Riverside, CA 92521-0403, United States; Fakultät für Chemie der Universität, Postfach 10 01 31, D-33615 Bielefeld, Germany
推荐引用方式 GB/T 7714	Lavallo V.,Canac Y.,Donnadieu B.,et al. Cyclopropenylidenes: From interstellar space to an isolated derivative in the laboratory[J],2006,312(5774).
APA	Lavallo V.,Canac Y.,Donnadieu B.,Schoeller W.W.,&Bertrand G..(2006).Cyclopropenylidenes: From interstellar space to an isolated derivative in the laboratory.Science,312(5774).
MLA	Lavallo V.,et al."Cyclopropenylidenes: From interstellar space to an isolated derivative in the laboratory".Science 312.5774(2006).