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Papers by P. Klæboe

Research paper thumbnail of Raman spectra of AlCl3-AlkCl and trends in species formation

The Raman spectra of LiC1-AICI3, KCI-A1CI3 and CsC1-AIC13 melts in the concentration range 50-100... more The Raman spectra of LiC1-AICI3, KCI-A1CI3 and CsC1-AIC13 melts in the concentration range 50-100 mol.% AICI3 are presented. The melt structure of these systems are discussed in terms of the species AICI4-, A12C17-, AI~C16 and higher polymers. The relative stabilities of the different species are studied as a function of the cation environment. Perturbation of the A1CI4-and A12CI7vibrations due to the alkali counterion is found and interpreted in terms of change of symmetry, force constants and masses. The bridge structure of A12CI7-is discussed.

Research paper thumbnail of The Vibrational Spectra and Molecular Structure of 4,4'-Difluoro-, Dicyano-, Dichloro-, Dibromo-, and Diiodobiphenyl

Acta Chemica Scandinavica, 1972

Research paper thumbnail of Perpendicular Amplitude Correction Coefficients of Free and Complexed Benzene and the Cyclopentadienide Anion

Acta Chemica Scandinavica, 1971

Research paper thumbnail of Vibrational spectra, conformational equilibrium and ab initio calculations of 1,2-diphenylethane

Journal of Molecular Structure, 2004

The infrared spectra of 1,2-diphenylethane were recorded as a melt and crystalline solid in capil... more The infrared spectra of 1,2-diphenylethane were recorded as a melt and crystalline solid in capillary films and as a pellet in KBr and polyethylene in the 4000-50 cm 21 range. Moreover, the sample was isolated in an argon matrix at ca. 5 K, and the spectra recorded in the range 3100-450 cm 21 , before and after annealing. Raman spectra of the melt were recorded between 295 (supercooled) and 357 K, and spectra of the crystalline solid were obtained at ambient temperature.

Research paper thumbnail of Vibrational spectra, conformational equilibria and ab initio calculations of chloromethylmethyl dichlorosilane

Journal of Molecular Structure, 2001

The infrared spectra of 1,2-diphenylethane were recorded as a melt and crystalline solid in capil... more The infrared spectra of 1,2-diphenylethane were recorded as a melt and crystalline solid in capillary films and as a pellet in KBr and polyethylene in the 4000-50 cm 21 range. Moreover, the sample was isolated in an argon matrix at ca. 5 K, and the spectra recorded in the range 3100-450 cm 21 , before and after annealing. Raman spectra of the melt were recorded between 295 (supercooled) and 357 K, and spectra of the crystalline solid were obtained at ambient temperature.

Research paper thumbnail of Conformational equilibrium of ethoxytrichlorosilane investigated by infrared and raman spectroscopy and by ab initio calculations

Research paper thumbnail of Raman Spectra of KCl-AlCl3 Melts and Normal Coordinate Analysis of Al2CL7

Acta Chemica Scandinavica, 1971

Research paper thumbnail of Infrared study of CO adsorbed on Co/γ-Al2O3 based Fischer–Tropsch catalysts; semi-empirical calculations as a tool for vibrational assignments

Physical Chemistry Chemical Physics, 2000

Research paper thumbnail of The Vibrational Spectra and Molecular Structure of 4,4'-Difluoro-, Dicyano-, Dichloro-, Dibromo-, and Diiodobiphenyl

Acta Chemica Scandinavica, 1972

Research paper thumbnail of The Crystal Structure of an Eight-Coordinated Tellurium(IV) Complex

Acta Chemica Scandinavica, 1973

Research paper thumbnail of Conformation and Vibrational Spectra of 1,1,2-Trichloro-2,3,3-trifluorocyclobutane

Acta Chemica Scandinavica, 1978

Research paper thumbnail of Stability Constants for Scandium Thiodiacetate Complexes

Acta Chemica Scandinavica, 1976

Research paper thumbnail of The Consistent Force Field. 2. An Optimized Set of Potential Energy Functions for the Alkanes

Acta Chemica Scandinavica, 1994

Research paper thumbnail of The Consistent Force Field. 1. Methods and Strategies for Optimization of Empirical Potential Energy Functions

Acta Chemica Scandinavica, 1994

Research paper thumbnail of On the Vibrational Spectra of Maleic Anhydride

Acta Chemica Scandinavica, 1971

Research paper thumbnail of Vibrational Spectra and Conformations of Cyanocyclobutane

Acta Chemica Scandinavica, 1989

The user has requested enhancement of the downloaded file.

Research paper thumbnail of Tentative Assignments of Fundamental Vibrations of Thio- and Selenoamides. V. Tetramethylthiouram Disulfide

Acta Chemica Scandinavica, 1978

Research paper thumbnail of Tentative Assignments of Fundamental Vibrations of Thio- and Selenoamides. IV. Addition Compounds of Tetramethylthiourea with Iodine, Methyl Iodide and Metal Halides

Acta Chemica Scandinavica, 1978

Research paper thumbnail of Crystal Structures of (2Amino2-methyl-1-propanolato)chlorocopper(II) and -bromocopper(II) Tetramers

Acta Chemica Scandinavica

Research paper thumbnail of Substituted Propanes. Part VIII. The Vibrational Spectra of 1,3-Dicyanopropane (Glutaronitrile)

Acta Chemica Scandinavica, 1972

Research paper thumbnail of Raman spectra of AlCl3-AlkCl and trends in species formation

The Raman spectra of LiC1-AICI3, KCI-A1CI3 and CsC1-AIC13 melts in the concentration range 50-100... more The Raman spectra of LiC1-AICI3, KCI-A1CI3 and CsC1-AIC13 melts in the concentration range 50-100 mol.% AICI3 are presented. The melt structure of these systems are discussed in terms of the species AICI4-, A12C17-, AI~C16 and higher polymers. The relative stabilities of the different species are studied as a function of the cation environment. Perturbation of the A1CI4-and A12CI7vibrations due to the alkali counterion is found and interpreted in terms of change of symmetry, force constants and masses. The bridge structure of A12CI7-is discussed.

Research paper thumbnail of The Vibrational Spectra and Molecular Structure of 4,4'-Difluoro-, Dicyano-, Dichloro-, Dibromo-, and Diiodobiphenyl

Acta Chemica Scandinavica, 1972

Research paper thumbnail of Perpendicular Amplitude Correction Coefficients of Free and Complexed Benzene and the Cyclopentadienide Anion

Acta Chemica Scandinavica, 1971

Research paper thumbnail of Vibrational spectra, conformational equilibrium and ab initio calculations of 1,2-diphenylethane

Journal of Molecular Structure, 2004

The infrared spectra of 1,2-diphenylethane were recorded as a melt and crystalline solid in capil... more The infrared spectra of 1,2-diphenylethane were recorded as a melt and crystalline solid in capillary films and as a pellet in KBr and polyethylene in the 4000-50 cm 21 range. Moreover, the sample was isolated in an argon matrix at ca. 5 K, and the spectra recorded in the range 3100-450 cm 21 , before and after annealing. Raman spectra of the melt were recorded between 295 (supercooled) and 357 K, and spectra of the crystalline solid were obtained at ambient temperature.

Research paper thumbnail of Vibrational spectra, conformational equilibria and ab initio calculations of chloromethylmethyl dichlorosilane

Journal of Molecular Structure, 2001

The infrared spectra of 1,2-diphenylethane were recorded as a melt and crystalline solid in capil... more The infrared spectra of 1,2-diphenylethane were recorded as a melt and crystalline solid in capillary films and as a pellet in KBr and polyethylene in the 4000-50 cm 21 range. Moreover, the sample was isolated in an argon matrix at ca. 5 K, and the spectra recorded in the range 3100-450 cm 21 , before and after annealing. Raman spectra of the melt were recorded between 295 (supercooled) and 357 K, and spectra of the crystalline solid were obtained at ambient temperature.

Research paper thumbnail of Conformational equilibrium of ethoxytrichlorosilane investigated by infrared and raman spectroscopy and by ab initio calculations

Research paper thumbnail of Raman Spectra of KCl-AlCl3 Melts and Normal Coordinate Analysis of Al2CL7

Acta Chemica Scandinavica, 1971

Research paper thumbnail of Infrared study of CO adsorbed on Co/γ-Al2O3 based Fischer–Tropsch catalysts; semi-empirical calculations as a tool for vibrational assignments

Physical Chemistry Chemical Physics, 2000

Research paper thumbnail of The Vibrational Spectra and Molecular Structure of 4,4'-Difluoro-, Dicyano-, Dichloro-, Dibromo-, and Diiodobiphenyl

Acta Chemica Scandinavica, 1972

Research paper thumbnail of The Crystal Structure of an Eight-Coordinated Tellurium(IV) Complex

Acta Chemica Scandinavica, 1973

Research paper thumbnail of Conformation and Vibrational Spectra of 1,1,2-Trichloro-2,3,3-trifluorocyclobutane

Acta Chemica Scandinavica, 1978

Research paper thumbnail of Stability Constants for Scandium Thiodiacetate Complexes

Acta Chemica Scandinavica, 1976

Research paper thumbnail of The Consistent Force Field. 2. An Optimized Set of Potential Energy Functions for the Alkanes

Acta Chemica Scandinavica, 1994

Research paper thumbnail of The Consistent Force Field. 1. Methods and Strategies for Optimization of Empirical Potential Energy Functions

Acta Chemica Scandinavica, 1994

Research paper thumbnail of On the Vibrational Spectra of Maleic Anhydride

Acta Chemica Scandinavica, 1971

Research paper thumbnail of Vibrational Spectra and Conformations of Cyanocyclobutane

Acta Chemica Scandinavica, 1989

The user has requested enhancement of the downloaded file.

Research paper thumbnail of Tentative Assignments of Fundamental Vibrations of Thio- and Selenoamides. V. Tetramethylthiouram Disulfide

Acta Chemica Scandinavica, 1978

Research paper thumbnail of Tentative Assignments of Fundamental Vibrations of Thio- and Selenoamides. IV. Addition Compounds of Tetramethylthiourea with Iodine, Methyl Iodide and Metal Halides

Acta Chemica Scandinavica, 1978

Research paper thumbnail of Crystal Structures of (2Amino2-methyl-1-propanolato)chlorocopper(II) and -bromocopper(II) Tetramers

Acta Chemica Scandinavica

Research paper thumbnail of Substituted Propanes. Part VIII. The Vibrational Spectra of 1,3-Dicyanopropane (Glutaronitrile)

Acta Chemica Scandinavica, 1972

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