Substituent and temperature controlled tautomerism: multinuclear magnetic resonance, X-ray, and theoretical studies on 2-phenacylquinolines

2000 ◽  
pp. 1259-1266 ◽  
Author(s):  
Erkki Kolehmainen ◽  
Borys Ośmiałowski ◽  
Tadeusz M. Krygowski ◽  
Reijo Kauppinen ◽  
Maija Nissinen ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Theoretical Studies ◽  
X Ray ◽  
Temperature Controlled ◽  
Multinuclear Magnetic Resonance

ChemInform Abstract: Substituent and Temperature Controlled Tautomerism: Multinuclear Magnetic Resonance, X-Ray, and Theoretical Studies on 2-Phenacylquinolines.

ChemInform ◽  
2000 ◽  
Vol 31 (37) ◽  
pp. no-no
Author(s):  
Erkki Kolehmainen ◽  
Borys Osmialowski ◽  
Tadeusz M. Krygowski ◽  
Reijo Kauppinen ◽  
Maija Nissinen ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Theoretical Studies ◽  
X Ray ◽  
Temperature Controlled ◽  
Multinuclear Magnetic Resonance

Alkyl chlorido hydridotris(3,5-dimethylpyrazolyl)borate imido niobium and tantalum(v) complexes: synthesis, conformational states of alkyl groups in solid and solution, X-ray diffraction and multinuclear magnetic resonance spectroscopy studies

2014 ◽  
Vol 43 (15) ◽  
pp. 5747-5758 ◽  
Author(s):  
Miguel Galájov ◽  
Carlos García ◽  
Manuel Gómez ◽  
Pilar Gómez-Sal
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Resonance Spectroscopy ◽  
Resonance Spectroscopy ◽  
X Ray Diffraction ◽  
Conformational States ◽  
X Ray ◽  
Alkyl Groups ◽  
Spectroscopy Studies ◽  
Multinuclear Magnetic Resonance

A series of new alkyl imido hydridotris(3,5-dimethylpyrazolyl)borate niobium and tantalum complexes have been synthesized and characterized.

1,3,2-Diazaphospha-[3]ferrocenophanes. Molecular Structures and Multinuclear Magnetic Resonance Studies

2009 ◽  
Vol 64 (11-12) ◽  
pp. 1401-1412 ◽  
Author(s):  
Bernd Wrackmeyer ◽  
Elena V. Klimkina ◽  
Wolfgang Milius
Keyword(s):  
Molecular Structure ◽  
Solid State ◽  
Structural Analysis ◽  
Magnetic Resonance ◽  
Phosphorus Atom ◽  
Molecular Structures ◽  
Magnetic Resonance Studies ◽  
X Ray ◽  
Nmr Techniques ◽  
Multinuclear Magnetic Resonance

2-Phenoxy-1,3,2-diazaphospha-[3]ferrocenophane and related derivatives (oxide, sulfide, selenide) were prepared, characterized in solution by multinuclear magnetic resonance methods (1D and 2D 1H, 13C, 15N and 31P NMR) and in the solid state by X-ray structural analysis. The conformation of the 2-phenoxy derivative differs from that of the 2-tert-butyl compound. For further comparison, 2-R- 2,3-dihydro-1H-1,3,2-diazaphospha-phenalene derivatives R = 'Bu, PhO were prepared and studied by the same NMR techniques. The molecular structure of a selenide was determined, and together with the NMR evidence, it was concluded that the conformation of these heterocycles is independent of the respective substituent at the phosphorus atom

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