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Alfred Karpfen
Alfred Karpfen
a.o.Univ-Prof. i.R., Institute of Theoretical Chemistry, Universität Wien
Verified email at univie.ac.at
Title
Cited by
Cited by
Year
Single-Bond Torsional Potentials in Conjugated Systems:  A Comparison of ab Initio and Density Functional Results
A Karpfen, CH Choi, M Kertesz
The Journal of Physical Chemistry A 101 (40), 7426-7433, 1997
3171997
Molecular geometries and vibrational spectra of phenol, benzaldehyde, and salicylaldehyde: experimental versus quantum chemical data
H Lampert, W Mikenda, A Karpfen
The Journal of Physical Chemistry A 101 (12), 2254-2263, 1997
1991997
The effects of electron correlation on the degree of bond alternation and electronic structure of oligomers of polyacetylene
C Ho Choi, M Kertesz, A Karpfen
The Journal of chemical physics 107 (17), 6712-6721, 1997
1681997
Cooperative effects in hydrogen bonding
A Karpfen
Advances in chemical physics 123, 469-510, 2002
1362002
A binitio studies on polymers. V. All‐trans‐polyethylene
A Karpfen
The Journal of Chemical Physics 75 (1), 238-245, 1981
1321981
Coupled pair functional study on the hydrogen fluoride dimer. I. Energy surface and characterization of stationary points
M Kofranek, H Lischka, A Karpfen
Chemical physics 121 (1), 137-153, 1988
1221988
Ab initio Studies on polymers: II. All-trans polyene
A Karpfen, J Petkov
Theoretica chimica acta 53, 65-74, 1979
1171979
Ab initio studies on polymers. I. The linear infinite polyyne
A Karpfen
Journal of Physics C: Solid State Physics 12 (16), 3227, 1979
1161979
Intramolecular hydrogen bonding in 2-hydroxybenzoyl compounds: infrared spectra and quantum chemical calculations
H Lampert, W Mikenda, A Karpfen
The Journal of Physical Chemistry 100 (18), 7418-7425, 1996
1131996
Spatial extension of a bipolaronic defect in oligothiophenes and in polythiophene: a combined semiempirical and ab initio study
C Ehrendorfer, A Karpfen
The Journal of Physical Chemistry 98 (31), 7492-7496, 1994
1041994
Charge-transfer complexes between NH3 and the halogens F2, ClF, and Cl2: an ab initio study on the intermolecular interaction
A Karpfen
The Journal of Physical Chemistry A 104 (29), 6871-6879, 2000
1032000
Ab initio studies on heterocyclic conjugated polymers: structure and vibrational spectra of thiophene, oligothiophenes and polythiophene
M Kofranek, T Kovář, H Lischka, A Karpfen
Journal of Molecular Structure: THEOCHEM 259, 181-198, 1992
1031992
Ab initio studies on hydrogen-bonded clusters. I. Linear and cyclic oligomers of hydrogen cyanide
M Kofranek, A Karpfen, H Lischka
Chemical physics 113 (1), 53-64, 1987
1021987
Ab initio studies on polymers. IV. Polydiacetylenes
A Karpfen
Journal of Physics C: Solid State Physics 13 (31), 5673, 1980
1011980
An analytical six‐dimensional potential energy surface for (HF) 2 from ab initio calculations
PR Bunker, M Kofranek, H Lischka, A Karpfen
The Journal of chemical physics 89 (5), 3002-3007, 1988
961988
Cis-trans isomerism in infinite polyacetylenes: an Ab initio study
A Karpfen, R Höller
Solid State Communications 37 (2), 179-182, 1981
931981
An approach to estimate the energy of the intramolecular hydrogen bond
P Lipkowski, A Koll, A Karpfen, P Wolschann
Chemical physics letters 360 (3-4), 256-263, 2002
912002
The intermolecular interaction in the charge-transfer complexes between amines and halogens: A theoretical characterization of the trends in halogen bonding
A Karpfen
Theoretical Chemistry Accounts 110, 1-9, 2003
862003
Ab initio calculations on the excited states of π-systems. I. Valence excitations in acetylene
H Lischka, A Karpfen
Chemical physics 102 (1-2), 77-89, 1986
861986
Theoretical characterization of the trends in halogen bonding
A Karpfen
Halogen Bonding: Fundamentals and Applications, 1-15, 2008
852008
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Articles 1–20