✦ LIBER ✦

13C-NMR and CNDO/2 calculations of compounds containing SP-hybridised carbon. Acetylenes and cumulenes.

✍ Scribed by J.P.C.M. van Dongen; M.J.A. de Bie; R. Steur

Book ID: 104246878
Publisher: Elsevier Science
Year: 1973
Tongue: French
Weight: 211 KB
Volume: 14
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(01)95946-5

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Synthesis of Acetylenes, Allenes and Cum

Synthesis of Acetylenes, Allenes and Cumulenes || 1H- and 13C-NMR Chemical Shifts of Acetylenic, Allenic and Cumulenic Compounds

✍ , 📂 Article 📅 2004 🏛 Elsevier 🌐 English ⚖ 89 KB

There is a vast and often bewildering array of synthetic methods and reagents available to organic chemists today. The *Best Synthetic Methods* series allows any scientist who is interested in the chemical transformations of molecules to choose between all the alternatives and assess their real adva

13C NMR spectra of silicon and germanium

13C NMR spectra of silicon and germanium acetylenic carbonyl-containing compounds

✍ E. V. Arshavskaya; L. D. Lezhava; A. M. Sladkov 📂 Article 📅 1979 🏛 Springer 🌐 English ⚖ 309 KB

Pyrroles from ketoximes and acetylene. 1

Pyrroles from ketoximes and acetylene. 13. Study of some substituted pyrroles by13C NMR spectroscopy and calculations with the CNDO/2 approximation

✍ M. V. Sigalov; B. A. Shainyan; G. A. Kalabin; A. I. Mikhaleva; B. A. Trofimov 📂 Article 📅 1980 🏛 Springer US 🌐 English ⚖ 429 KB

A rare example of extremely strong carbo

A rare example of extremely strong carbon—carbon coupling: Analysis of 13C and 1H NMR spectra of a 13C2-acetylenic ketone

✍ Richard J. Auchus; André d'Avignon; Douglas F. Covey 📂 Article 📅 1987 🏛 John Wiley and Sons 🌐 English ⚖ 270 KB 👁 1 views

NMR spectra are reported for an acetylenic ketone enriched with 13C in the acetylenic carbon atoms that exhibits extremely strong C-C coupling. Chemical shifts and coupling constants have been extracted from computer simulations of the second-order 'H and I3C spectra. The two acetylenic carbon atoms

1H and 13C NMR assignments of eight nitr

1H and 13C NMR assignments of eight nitrogen containing compounds from Nocardia alba sp.nov (YIM 30243T)

✍ Zhang-Gui Ding; Jiang-Yuan Zhao; Pei-Wen Yang; Ming-Gang Li; Rong Huang; Xiao-Lo 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 112 KB

## Abstract An unprecedented new natural product named nocarsin A (1), 5__H__‐4a,6,7a‐triazacyclopenta[__cd__]indene‐5,7(6__H__)‐dione (1), together with seven known compounds lumichrome (2), cyclo (L‐Leu‐L‐Tyr) (3), cyclo (L‐Ala‐L‐Ile) (4), cyclo (L‐Ala‐L‐Leu) (5), cyclo (L‐Val‐L‐Ala) (6), 5‐methy

Barrier to Rotation around the C sp2 -C

Barrier to Rotation around the C sp2 -C sp2 Bond of the Ketoaldehyde Enol Ether MeC(O)CHCH−OEt As Determined by 13 C NMR and ab Initio Calculations

✍ Siebert, Hans-Christian; Tajkhorshid, Emad; Dabrowski, Janusz 📂 Article 📅 2001 🏛 American Chemical Society 🌐 English ⚖ 98 KB