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51

Spectroscopic study of the fluorescence and phosphorescence of indolecarboxylic acids in relation to pH

Jean-Jacques Aaron, Cyril Parkanyi

Journal:

Journal of Photochemistry

Year:

1981

Language:

english

File:

PDF, 62 KB

english, 1981

52

ChemInform Abstract: Synthesis and Conversion of 6-Fluoro Derivatives of 1,3,4-Thiadiazolo-[3,2-a]pyrimidine.

Muhamadsho A. Kukaniev, Cyril Parkanyi

Journal:

Year:

2012

File:

PDF, 30 KB

2012

53

Thermal Decomposition of Aromatic Thioureas [1]

Párkányi, Cyril, Al-Salamah, Mohammed A.

Journal:

Zeitschrift für Naturforschung B

Year:

1986

Language:

english

File:

PDF, 3.42 MB

english, 1986

54

Fluorescence study of inter- and intramolecular interactions in poly(p-N,N-dimenthylaminostyrene-co-9-vinylantracene)

Rong Kun Guo, Hui Liang Yuan, Cyril Párkányi

Journal:

Journal of Luminescence

Year:

1992

Language:

english

File:

PDF, 759 KB

english, 1992

55

Synthesis and structural investigation of biologically active complexes of 4-acetyl-2-(acetylamino)-5-dimethyl-Δ2-1,3,4-thiadiazole with Zn(II), Hg(II), Cd(II) and Cu(II)

K.N. Thimmaiah, G.T. Chandrappa, Winston D. Lloyd, Cyril Párkányi

Journal:

Inorganica Chimica Acta

Year:

1985

Language:

english

File:

PDF, 326 KB

english, 1985

56

Theoretical and Experimental Dipole Moments of Purines

Párkányi, Cyril, Boniface, Christian, Aaron, Jean-Jacques, Bulaceanu-MacNair, Mihaela, Dakkouri, Marwan

Journal:

Collection of Czechoslovak Chemical Communications

Year:

2002

Language:

english

File:

PDF, 126 KB

english, 2002

57

[Theoretical and Computational Chemistry] Theoretical Organic Chemistry Volume 5 || Foreword

Párkányi, Cyril

Year:

1998

Language:

english

File:

PDF, 31 KB

english, 1998

58

The MCS model of chemical initiation of cancer: ppp calculations on methylated and N-heteroaromatic polycycles

László von Szentpály, Cyril Párkányi

Journal:

Journal of Molecular Structure: THEOCHEM

Year:

1987

Language:

english

File:

PDF, 959 KB

english, 1987

59

Quantitative treatment of the effect of solvent on the electronic absorption and fluorescence spectra of substituted coumarins: Evaluation of the first excited singlet-state dipole moments

Jean-Jacques Aaron, Mihaela Buna, Cyril Parkanyi, Maged Shafik Antonious, Alphonse Tine, Lamine Cisse

Journal:

Journal of Fluorescence

Year:

1995

Language:

english

File:

PDF, 877 KB

english, 1995

60

Synthesis of Pyrazolo[3,4- b ]pyridin-6-ones

Komarova, Elena S., Makarov, Vadim A., Granik, Vladimir G., Párkányi, Cyril

Journal:

Journal of Heterocyclic Chemistry

Year:

2012

Language:

english

File:

PDF, 3.03 MB

english, 2012

61

DESTRUCTIVE PHOTOOXIDATION OF TRIS(DIBENZOYLMETHANATO)IRON(III)

Párkányi, Cyril, Richards, John H.

Journal:

Journal of Coordination Chemistry

Year:

1974

Language:

english

File:

PDF, 385 KB

english, 1974

62

Inductive Effects on Molecular Ionization Potentials, XVIII Alkylpyridines and Alkylthiophenes. Molecular Orbital Calculations on Alkylbenzenes and Alkylpyridines

Párkányi, Cyril, Levitt, Leonard S.

Journal:

Zeitschrift für Naturforschung B

Year:

1977

Language:

english

File:

PDF, 4.48 MB

english, 1977

63

ChemInform Abstract: THEORETICAL STUDY OF BOREPINODITHIOPHENES

JEFFRIES, ALFRED T. III, PARKANYI, CYRIL

Journal:

Chemischer Informationsdienst

Year:

1976

File:

PDF, 113 KB

1976

64

Synthesis of 5-aroylamino-3H-1,3,4-thiadiazole-2-thiones and their tautomerism

Nam Sook Cho, Goo Ni Kim, Cyril Párkányi

Journal:

Journal of Heterocyclic Chemistry

Year:

1993

File:

PDF, 287 KB

1993

65

Reactions of α-ketohydrazidoyl halides with some heterocyclic amines. Facile synthesis of arylazo derivatives of fused heterocycles with a bridgehead nitrogen atom

Abdou O. Abdelhamid, Hamdi M. Hassaneen, Ahmad S. Shawali, Cyril Párkányi

Journal:

Journal of Heterocyclic Chemistry

Year:

1983

File:

PDF, 260 KB

1983

66

Optimum HMO parameters for the three models of the methyl group

Parkanyi, Cyril, Herndon, William C., Shawali, Ahmad S.

Journal:

Journal of Organic Chemistry

Year:

1980

Language:

english

File:

PDF, 416 KB

english, 1980

67

Aromaticity: A new Multilinear Approach

Cyril Párkányi, Christian Boniface

Journal:

Bulletin des Sociétés Chimiques Belges

Year:

1990

Language:

english

File:

PDF, 328 KB

english, 1990

68

Solvent and solubility effects on exciplex emission of polymer-bound anthryl group and p-N,N-dimethylaminotoluene

Hui Liang Yuan, Cyril Párkányi, Rong Kun Guo, Fei Pong Wu

Journal:

Journal of Photochemistry and Photobiology A: Chemistry

Year:

1992

Language:

english

File:

PDF, 852 KB

english, 1992

69

π [Pi] bond orders and bond lengths

Herndon, William C., Parkanyi, Cyril

Journal:

Journal of Chemical Education

Year:

1976

Language:

english

File:

PDF, 4.54 MB

english, 1976

70

Synthesis of silyl and stannyl pyrimidines

Cyril Párkányi, Nam Sook Cho, Geon Seek Yoo

Journal:

Journal of Organometallic Chemistry

Year:

1988

Language:

english

File:

PDF, 509 KB

english, 1988

71

Quantitative treatment of the solvent effects on the electronic absorption and fluorescence spectra of acridines and phenazines. The ground and first excited singlet-state dipole moments

Jean Jacques Aaron, Mounir Maafi, Cyril Párkányi, Christian Boniface

Journal:

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy

Year:

1995

Language:

english

File:

PDF, 739 KB

english, 1995

72

ChemInform Abstract: Synthesis and Transformations of Hydrazine Substituted 6-Fluoro Derivatives of 1,3,4-Thiadiazolo[3,2-a]pyrimidine.

Muhamadsho A. Kukaniev, Cyril Parkanyi

Journal:

Year:

2012

File:

PDF, 31 KB

2012

73

Physical properties and chemical reactivity of alternant hydrocarbons and related compounds. XVI. Electronic absorption and phosphorescence spectra of aryl phenyl ketones

Parkanyi, Cyril, Baum, E. J., Wyatt, J., Pitts, J. N.

Journal:

Journal of Physical Chemistry

Year:

1969

Language:

english

File:

PDF, 667 KB

english, 1969

74

Photodebromination of Bromothiophenes

Jeffries, Alfred T., Párkányi, Cyril

Journal:

Zeitschrift für Naturforschung B

Year:

1976

Language:

english

File:

PDF, 2.96 MB

english, 1976

75

ChemInform Abstract: Enamines as Synthons in the Synthesis of Heterocycles

Vladimir G. Granik, Vadim A. Makarov, Cyril Parkanyi

Journal:

Year:

1999

File:

PDF, 24 KB

1999

76

Synthesis of acyclic nucleoside analogs of 6-substituted 2-aminopurines and 2-amino-8-azapurines

Cyril Párkányi, Hui Liang Yuan

Journal:

Journal of Heterocyclic Chemistry

Year:

1990

File:

PDF, 407 KB

1990

77

Synthesis of polymethylene chain-bridged 6-substituted 8-azapurines and related compounds

Párkányi, Cyril, Yuan, Hui Liang, Marín-Montes, Martha C., Essoussi, Hans T.

Journal:

Collection of Czechoslovak Chemical Communications

Year:

1991

Language:

english

File:

PDF, 279 KB

english, 1991

78

Partition Coefficients of Biologically Important Pyrimidines and Purines [1]

Párkányi, Cyril, Shieh, Dah-Chung

Journal:

Zeitschrift für Naturforschung B

Year:

1986

Language:

english

File:

PDF, 267 KB

english, 1986

79

Thermal decomposition of ascorbic acid

Gaston Vernin, Soundouss Chakib, Sonia M. Rogacheva, Tzvetan D. Obretenov, Cyril Párkányi

Journal:

Carbohydrate Research

Year:

1997

Language:

english

File:

PDF, 867 KB

english, 1997

80

Protodebromination of bromoquinolines and bromoisoquinolines

Cyril Párkányi, Yong J. Lee

Journal:

Tetrahedron Letters

Year:

1974

Language:

english

File:

PDF, 207 KB

english, 1974

81

Convenient synthesis of arylazo derivatives of quinoxaline, 1,4-benzothiazine, and 1,4-benzoxazine

Cyril Párkányi, Abdou O. Abdelhamid, Ahmad S. Shawali

Journal:

Journal of Heterocyclic Chemistry

Year:

1984

File:

PDF, 240 KB

1984

82

Synthesis and properties of 5-aroylamino-2H-1,2,4-thiadiazol-3-ones

Nam Sook Cho, Hyun Il Shon, Cyril Párkányi

Journal:

Journal of Heterocyclic Chemistry

Year:

1991

File:

PDF, 263 KB

1991

83

EFFECT OF THE BROMINE ATOM UPON THE DISSOCIATION CONSTANTS OF BROMOPYRIDINES, BROMOQUINOLINES AND 4-BROMOISOQUINOLINE IN THEIR LOWEST EXCITED SINGLET AND TRIPLET STATES

Jean-Jacques Aaron, P. Thiao, Cyril Párkányi, Alfred T. Jeffries, Bansi L. Kalsotra

Journal:

Photochemistry and Photobiology

Year:

1979

Language:

english

File:

PDF, 372 KB

english, 1979

84

ChemInform Abstract: THEORETICAL STUDY OF BOREPINODITHIOPHENES

JEFFRIES, ALFRED T. III, PARKANYI, CYRIL

Journal:

Chemischer Informationsdienst

Year:

1976

File:

PDF, 113 KB

1976

85

Hammett Correlations of Electronic Absorption Spectral Parameters of Pyrimidines

Cyril Párkányi, Christian Boniface, Jean-Jacques Aaron, Mame Diabou Gaye

Journal:

Bulletin des Sociétés Chimiques Belges

Year:

1993

Language:

english

File:

PDF, 230 KB

english, 1993

86

ChemInform Abstract: Synthesis of 5-Chloro-2-methyl-3-(5-methylthiazol-2-yl)-4(3H)-quinazolinone and Related Compounds with Potential Biological Activity.

Cyril Parkanyi, Duran S. Schmidt

Journal:

Year:

2001

File:

PDF, 30 KB

2001

87

Experimental and theoretical dipole moments of purines in their ground and lowest excited singlet states

Jean-Jacques Aaron, Mame Diabou Gaye, Cyril Párkányi, Nam Sook Cho, László Von Szentpály

Journal:

Journal of Molecular Structure

Year:

1987

Language:

english

File:

PDF, 997 KB

english, 1987

88

GC-MS-SPECMA bank analysis of JUniperus communis needles and berries

Gaston Vernin, Christian Boniface, Jacques Metzger, Claude Ghiglione, Ahmed Hammoud, Kim-Nuor Suon, Daniel Fraisse, Cyril Párkányi

Journal:

Year:

1988

Language:

english

File:

PDF, 403 KB

english, 1988

89

Preparation of N-Heterocycle Salts of [Yb(oxalate)2]− and [HoCl5]2−

Bansi L. Kalsotra, Cyril Párkányi

Journal:

Inorganica Chimica Acta

Year:

1979

Language:

english

File:

PDF, 323 KB

english, 1979

90

Electronic absorption and fluorescence spectra and excited singlet-state dipole moments of biologically important pyrimidines

Cyril Párkányi, Christian Boniface, Jean-Jacques Aaron, Mame Diabou Gaye, Ratna Ghosh, László Szentpály, Krishnan S. RaghuVeer

Journal:

Structural Chemistry

Year:

1992

Language:

english

File:

PDF, 976 KB

english, 1992

91

Chromatographic determination of benz[c]acridines and related compounds in airborne carcinogens

Noboru Motohashi, Roger Meyer, Joseph Molnár, Cyril Párkányi, Xingchun Fang

Journal:

Journal of Chromatography A

Year:

1995

Language:

english

File:

PDF, 887 KB

english, 1995

92

Monitoring of Photodegradation Process of Various Benzothiazoles by HPLC and UV Spectrometry: Application of LC-MS in Photoproduct Identification

Zajíčková, Zuzana, Párkányi, Cyril

Journal:

Journal of Liquid Chromatography & Related Technologies

Year:

2009

Language:

english

File:

PDF, 342 KB

english, 2009

93

BOND LENGTHS AND BOND ORDERS IN π-ELECTRON HETEROCYCLES

Párkányi, Cyril, Herndon, William C.

Journal:

Phosphorous and Sulfur and the Related Elements

Year:

1978

Language:

english

File:

PDF, 475 KB

english, 1978

94

ChemInform Abstract: Photodebromination of Bromothiophenes.

JEFFRIES, ALFRED T. III, PARKANYI, CYRIL

Journal:

Chemischer Informationsdienst

Year:

1976

File:

PDF, 111 KB

1976

95

Polarographic Behavior of N-Arenecarbohydrazonoyl Morpholine Derivatives. Redaction Mechanism and Substituent Effects

Shawali, Ahmad S., Párkányi, Cyril, Fahmy, Hussein M., Hassaneen, Hamdi M.

Journal:

Zeitschrift für Physikalische Chemie

File:

PDF, 886 KB

96

Determination of the First Excited Singlet State Dipole Moments of Coumarins by the Solvatochromic Method∗

Párkányi, Cyril, Antonious, Maged Shafik, Aaron, Jean-Jacques, Buna, Michaela, Tine, Alphonse, Cissá, Lamine

Journal:

Spectroscopy Letters

Year:

1994

Language:

english

File:

PDF, 317 KB

english, 1994

97

Polarographic behaviour of hansa yellow- like dyes. Reduction mechanism and substituent effects

Ahmad S. Shawall, Bashier A. Abdel Nabey, Cyril Párkányi

Journal:

Electrochimica Acta

Year:

1980

Language:

english

File:

PDF, 458 KB

english, 1980

98

Improved synthesis of several methoxynitronaphthalenes

Cyril Párkányi, Hui Liang Yuan, Annette Sappok-Stang, Adolfo Ruiz Gutiérrez, San Ardi Lee

Journal:

Monatshefte für Chemie - Chemical Monthly

Year:

1992

Language:

english

File:

PDF, 589 KB

english, 1992

99

Theory of the Salt Effect on Solvatochromic Shifts And Its Potential Application to the Determination of Ground-State and Excited-State Dipole Moments

Mulder, Willem H., Párkányi, Cyril

Journal:

Journal of Physical Chemistry A

Year:

2002

Language:

english

File:

PDF, 76 KB

english, 2002

100

Cyclization of Thiohydrazonate Esters and Azo-Hydrazone. Tautomerism of 2-Arylhydrazono-3-oxo-1,4-benzothiazines.

Ahmad S. Shawali, Said Elsheikh, Cyril Parkanyi

Journal:

Year:

2003

File:

PDF, 88 KB

2003

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