Tripelbinding
En trippelbinding er en kemisk binding imellem to atomer, der involverer seks elektronparbinding er i stedet for de normale to i en kovalent enkeltbinding. Trippelbindinger er stærkere end de ækvivalente enkelt- eller dobbeltbindinger, mend en med et bindingstal på tre. Den mest almindelige trippelbinding er i nitrogen N2 molekylet; og det næstmest almindelige er imellem to carbonatomer, der findes i alkyner. Andre funktionelle grupper, der indeholder trippelbindinger, er cyanider og isocyanider. Nogle diatomare molekyler som difosfor[1] og carbonmonoxid sidder også sammen med trippelformel. I skeletformeler bliver trippelbindinger tegnet som tre parallele linjer (≡) mellem de to atomer, som der er bundet sammen.[2][3][4]
 |  |  |
| acetylen, H−C≡C−H | cyanogen, N≡C−C≡N | carbonmonoxid, C≡O |
Referencer
- ^ Huber, K. P.; Herzberg, G. (1979). Molecular Spectra and Molecular Structure IV. Constants of Diatomic Molecules. New York: Van Nostrand. ISBN 978-0442233945.
- ^ Skabelon:JerryMarch
- ^ Organic Chemistry 2nd Ed. John McMurry
- ^ Pyykkö, Pekka; Riedel, Sebastian; Patzschke, Michael (2005). "Triple-Bond Covalent Radii". Chemistry: A European Journal. 11 (12): 3511-20. doi:10.1002/chem.200401299. PMID 15832398.
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Carbon monoxide 2D.svg
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Dehydrobenzoannulene.jpg
Forfatter/Opretter: Shigeki Kawai, Ville Haapasilta, Benjamin D. Lindner, Kazukuni Tahara, Peter Spijker, Jeroen A. Buitendijk, Rémy Pawlak, Tobias Meier, Yoshito Tobe, Adam S. Foster & Ernst Meyer, Licens: CC BY 4.0
(left) Chemical structure of triangular dehydrobenzo[12]annulene (tDBA); (right) high-resolution AFM image of tDBA on Ag(111). Inset shows the STM topography. Measurement parameters: Vtip=0 mV and A=60 pm in b and Vtip=−200 mV and I=1 pA in (inset). Scale bar, 500 pm.
Forfatter/Opretter: Shigeki Kawai, Ville Haapasilta, Benjamin D. Lindner, Kazukuni Tahara, Peter Spijker, Jeroen A. Buitendijk, Rémy Pawlak, Tobias Meier, Yoshito Tobe, Adam S. Foster & Ernst Meyer, Licens: CC BY 4.0
(left) Chemical structure of triangular dehydrobenzo[12]annulene (tDBA); (right) high-resolution AFM image of tDBA on Ag(111). Inset shows the STM topography. Measurement parameters: Vtip=0 mV and A=60 pm in b and Vtip=−200 mV and I=1 pA in (inset). Scale bar, 500 pm.
Acetylene-CRC-IR-dimensions-2D.svg
Structural formula of the acetylene (ethyne) molecule, C2H2, with bond lengths. The molecule belongs to the D∞h point group. Structural information (determined by infrared spectroscopy) from CRC Handbook, 88th edition.
Structural formula of the acetylene (ethyne) molecule, C2H2, with bond lengths. The molecule belongs to the D∞h point group. Structural information (determined by infrared spectroscopy) from CRC Handbook, 88th edition.
Cyanogen-2D-dimensions.svg
Forfatter/Opretter: raster original by User:Benjah-bmm27
vectorization by B. Jankuloski, Licens: CC0
Structure of the cyanogen molecule, NCCN, with the C-N bond length of 1.163 Å and the C-C bond length of 1.393 Å.
Forfatter/Opretter: raster original by User:Benjah-bmm27
vectorization by B. Jankuloski, Licens: CC0
Structure of the cyanogen molecule, NCCN, with the C-N bond length of 1.163 Å and the C-C bond length of 1.393 Å.