Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Tor Ottersen"'
Publikováno v:
Journal of Molecular Structure. 30:379-387
Four hydrogen-bonded formamide—ammonia complexes have been studied by ab initio calculations, two where the amino group acts as a donor and two where the carbonyl oxygen is acceptor. In all cases the formation of a hydrogen bond leads to increased
Autor:
Tor Ottersen
Publikováno v:
Journal of Molecular Structure. 26:365-374
In order to study the variation of CO and CN bond lengths as functions of the hydrogen bond length, a series of ab initio calculations have been performed on the keto and enol tautomers of formamide. The formation of hydrogen bonds leads to an increa
Publikováno v:
Acta Chemica Scandinavica. :781-787
Autor:
Supanich Pramatus, Olav Smidsrød, Inger Søtofte, Sven J. Cyvin, Pathana Phavanantha, B. Saustrup Kristensen, Cha-On Pontchour, H. Mosbæk, Tor Ottersen, Bjørg N. Cyvin
Publikováno v:
Acta Chemica Scandinavica. :127-131
Publikováno v:
Journal of Crystal and Molecular Structure. 6:87-100
The crystal structure of 1,3-dinitro-4,6-di[3-(2,2,5,5-tetramethyl)pyrrolidinyl-N-oxide] aminobenzene monohydrate has been determined by single-crystal X-ray diffraction methods using the 1793 unique reflections for which 3 ° 3σ(I), and refined to
Publikováno v:
Inorganic Chemistry. 13:1904-1911
Autor:
Tor Ottersen
Publikováno v:
Advances in Molecular Relaxation Processes. 9:105-128
On the basis of the results obtained in a series of structure investigations and a series of theoretical studies the effect of hydrogen bonding on the peptide linkage (the NCO moiety) is discussed. The structure determinations., using X-ray dif
Publikováno v:
Canadian Journal of Chemistry. 57:1707-1711
From a deep water Pacific zoanthid, Gerardia sp., we have isolated two new fluorescent nitrogenous pigments, derivatives of tetrazacyclopentazulene. The first was characterized by uv, 1H and 13C nmr data, and by X-ray diffraction; the second by inter
Publikováno v:
Acta Chemica Scandinavica. :480-484
Autor:
Harald Jensen, Tor Ottersen
Publikováno v:
Journal of Molecular Structure. 26:355-363
A series of ab initio calculations has been performed on formamide and its hydrogen bonded dimer, s-diformylhydrazine, s-dimethylhydrazine and hydrazine. All systems were assumed planar. The CO, CN and NN bond lengths were optimized in all cases, in