Abstract Propiolamide and cellocidin were investigated in superacidic media. In both acetylenic amides, the amide moiety is immediately monoprotonated in anhydrous HF, HF/SbF 5 and HF/BF 3 . An increase of SbF 5 does not lead to a more highly protonated species. The salts were characterized by low-temperature Raman, NMR and room temperature IR spectroscopy, as well as by single-crystal X-ray diffraction. The experimental data are discussed together with results of quantum-chemical calculations on the M06-2X/aug- cc -pVTZ level of theory, which are consistent with the observation of pure monoprotonation. The second protonation of the amide moiety or the triple bond is not observed due to the high positive charge caused by the monoprotonation.

Dirk Hollenwäger

Niklas Kölbl

Alexander Nitzer

Valentin Bockmair

Andreas J. Kornath

Zeitschrift für Naturforschung B

Zeitschrift fuer Naturforschung B (ZNB) publishes novel research in all areas of inorganic chemistry, organic chemistry, and analytical chemistry. In particular, the journal focuses on solid state chemistry, coordination chemistry, main group element chemistry, synthetic organic chemistry, natural product chemistry and, to a lesser extent, on analytical chemistry. For more than 65 years Zeitschrift fuer Naturforschung B has been open to contributions from all fields of experimental and theoretical chemistry. Zeitschrift fuer Naturforschung B publishes 12 issues per volume/year. Sometimes double issues occur.

Topics 
Solid state chemistry
Coordination chemistry
Main group element chemistry
Organic chemistry
Natural product chemistry.

The "Zeitschrift für Naturforschung - Section B Journal of Chemical Sciences" publishes novel research across all areas of inorganic chemistry, organic chemistry, and analytical chemistry. The journal particularly focuses on solid state chemistry, coordination chemistry, main group element chemistry, synthetic organic chemistry, and natural product chemistry, with a lesser emphasis on analytical chemistry. For over 65 years, the journal has welcomed contributions from all fields of experimental and theoretical chemistry. It publishes 12 issues per year, with occasional double issues.\n\nTopics\nSolid state chemistry\nCoordination chemistry\nMain group element chemistry\nOrganic chemistry\nNatural product chemistry.

《Zeitschrift für Naturforschung - Section B Journal of Chemical Sciences》致力于发表无机化学、有机化学和分析化学各领域的新研究。期刊特别关注固态化学、配位化学、主族元素化学、合成有机化学、天然产物化学，以及在较小程度上关注分析化学。超过65年来，《Zeitschrift für Naturforschung B》欢迎来自实验和理论化学各个领域的贡献。该期刊每年出版12期，有时会出现双期。\n\n主题\n固态化学\n配位化学\n主族元素化学\n有机化学\n天然产物化学。

Category	Quartile
化学	4
化学, 无机化学与核化学	4
化学, 有机化学	4

The structure and properties of monoprotonated propiolamide and diprotonated cellocidin

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Journal Info

Category	Quartile
CHEMISTRY, ORGANIC	4