Stable Versions of Transient Push-Pull Carbenes: Extending Lifetimes from Nanoseconds to Weeks
A (phosphanyl)(trifluoromethyl)carbene is shown to be stable for weeks in solution at temperatures up to -30°C;. Its chemical behavior exactly matches that of its transient congeners, even to the extent that subtle effects, such as the recently discovered weak π interaction with aromatics, are obser...
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Published in | Science (American Association for the Advancement of Science) Vol. 288; no. 5467; pp. 834 - 836 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Washington, DC
American Society for the Advancement of Science
05.05.2000
American Association for the Advancement of Science |
Subjects | |
Online Access | Get full text |
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Summary: | A (phosphanyl)(trifluoromethyl)carbene is shown to be stable for weeks in solution at temperatures up to -30°C;. Its chemical behavior exactly matches that of its transient congeners, even to the extent that subtle effects, such as the recently discovered weak π interaction with aromatics, are observed. The influence of substituents on the structure of push-pull carbenes is demonstrated by a single-crystal x-ray diffraction study of a (phosphanyl)[2,6-bis(trifluoromethyl)phenyl]carbene. The lifetime of these molecules makes them accessible to a wider range of standard techniques, allowing their chemical and physical behaviors to be studied in more detail than was previously possible. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0036-8075 1095-9203 |
DOI: | 10.1126/science.288.5467.834 |