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BESTIMMUNG VON RINGSTROMANISOTROPIEEFFEKTEN IM 1H-NMR-SPEKTRUM VON 9-PHENYLDERIVATIVEN DES 1.4-DIMETHYLANTHRACENS UND 1.4-DIMETHYLTRIPTYCENS = DETERMINATION DES EFFETS D'ANISOTROPIE DE COURANT DE CYCLE DANS LES SPECTRES DE RMN PROTONIQUE DES PHENYL-9 DIMETHYL-1,4-ANTHRACENE ET -TRIPTYCENEESSWEIN HD; HAFELINGER G.1978; Z. NATURFORSCH., B; DEU; DA. 1978; VOL. 33; NO 9; PP. 1026-1032; ABS. ENG; BIBL. 18 REF.Article

UNTERSUCHUNGEN ZUR ANWENDBARKEIT DER MESITYLGRUPPE ALS NMR-SONDE ZUM NACHWEIS VON RINGSTROM-ANISTOROPIE EFFEKTEN. II. SUBSTITUENTENEFFEKTE BEI P-SUBSTITUIERTEN MESITYLBENZOLDERIVATEN. = ETUDES DE L'APPLICATION DU GROUPE MESITYLE COMME SONDE RMN A LA DETERMINATION DES EFFETS D'ANISOTROPIE DE COURANT DE CYCLE. II. EFFETS DE SUBSTITUANTS DE DERIVES P-SUBSTITUES DU MESITYLBENZENEHAFELINGER G; HACK F; WESTERMAYER G et al.1978; CHEM. BER.; DTSCH.; DA. 1978; VOL. 111; PP. 1323-1329; ABS. ANGL.; BIBL. 17 REF.Article

Vereinfachte Darstellung von am Benzolring monosubstituierten Indolen sowie entsprechenden 3(2H)-Indolon-Derivaten als Vorstufen für Naturstoffsynthesen = Synthèse simple d'indoles et des dérivés correspondants 2H-indolones-3 monosubstitués sur le noyau benzénique, comme précurseurs de composés naturels = Simple synthesis of indoles and of corresponding 3(2H)-indolone derivatives monosubstituted at the benzene ring, as synthetic precursors of natural compoundsNIMTZ, M; HAFELINGER, G.Liebigs Annalen der Chemie. 1987, Num 9, pp 765-770, issn 0170-2041Article

Crystallographic studies and physicochemical properties of π-electron systems. X: Ab initio STO-3G interpretation of Hammett substituent constantsKRYGOWSKI, T. M; HAFELINGER, G.Journal of chemical research. Synopses (Print). 1986, Num 9, pp 348-349, issn 0308-2342Article

Refined ab initio 6-31G split-valence basis set optimization of the molecular structures of biphenyl in twisted, planar, and perpendicular conformationsHÄFELINGER, G; REGELMANN, C.Journal of computational chemistry. 1987, Vol 8, Num 7, pp 1057-1065, issn 0192-8651Article

Geminale Dimethylierung von Acetylbenzolen zur Darstellung von tert-Butylbenzolderivaten: vereinfachte Synthese von 1,3-Ditert-butylbenzol = Diméthylation géminée d'acétylbenzènes pour la préparation de dérivés du t-butylbenzène. Synthèse facile du di-t-butyl-1,3 benzène = Geminal dimethylation of acetylbenzenes for preparation of t-butylbenzene derivatives. Simple synthesis of 1,3-di-t-butylbenzeneHÄFELINGER, G; MARB, M.New journal of chemistry (1987). 1987, Vol 11, Num 5, pp 401-402, issn 1144-0546Article

Ab initio STO-3G optimization of planar, perpendicular, and twisted molecular structures of biphenylHÄFELINGER, G; REGELMANN, C.Journal of computational chemistry. 1985, Vol 6, Num 5, pp 368-376, issn 0192-8651Article

Interpretation of substituent angular parameters of monosubstituted benzenes by means of ab initio STO-3G fully optimized molecular structures and charges densities. VI: «crystallographic studies and physicochemical properties of π-electron systems»KRYGOWSKI, T. M; HAFELINGER, G; SCHULE, J et al.Zeitschrift für Naturforschung. Teil b, Anorganische Chemie, organische Chemie. 1986, Vol 41, Num 7, pp 895-903, issn 0340-5087Article

Tetrazetidine: ab initio calculations and experimental approachRITTER, G; HÄFELINGER, G; LÜDDECKE, E et al.Journal of the American Chemical Society. 1989, Vol 111, Num 13, pp 4627-4635, issn 0002-7863, 9 p.Article

Amidines. XXXIII, Full ab initio 3-21G optimization of the molecular structures of fluoro derivatives of formamidine and their protonation products. Quantitative structure-basicity relations of amidinesOSZCZAPOWICZ, J; REGELMANN, C. U; HÄFELINGER, G et al.Perkin transactions. 2. 1990, Num 9, pp 1551-1557, issn 0300-9580, 7 p.Article

Basis set dependence, precision, and accuracy of full ab initio gradient optimizations of molecular structures of nonstrained hydrocarbons. I: CC bond lengthsHÄFELINGER, G; REGELMANN, C. U; KRYGOWSKI, T. M et al.Journal of computational chemistry. 1989, Vol 10, Num 3, pp 329-343, issn 0192-8651, 15 p.Article

Crystallographic studies and physicochemical properties of π-electron compounds. XVII: The structureof p-nitrophenylacetic acidGRABOWSKI, S. J; KRYGOWSKI, T. M; HÄFELINGER, G et al.Acta crystallographica. Section C, Crystal structure communications. 1990, Vol 46, Num 3, pp 428-430, issn 0108-2701, 3 p.Article

Empirisches Inkrementsystem für Methylgruppensignale sowie Ringstrombeeinflussung, der Protonen-NMR-Spektren methylsubstituierter Biphenylderivate = Système d'incréments empiriques pour les signaux du groupe méthyle et les effets du courant de cycle dans les spectres RMN protoniques de biphényles substitués par des groupes méthyle = Empirical increment system for methyl group signals and ring current effects on proton NMR spectra of methyl substituted biphenylsHÄFELINGER, G; BEYER, M; BURRY, P et al.Chemische Berichte. 1984, Vol 117, Num 3, pp 895-903, issn 0009-2940Article

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