Zobrazeno 1 - 10 of 15 pro vyhledávání: '"John F Wojcik"'
1
Ab initio DFT calculations of the configurational and conformational preferences of 2-phenylsulfinylcyclohexanones — Evidence for 'exo-anomeric' interactions
Autor: B. Mario Pinto, Walter W. Zajac, Melissa L Trapp, John F Wojcik
Publikováno v: Canadian Journal of Chemistry. 84:685-691
The conformational analysis of 2-phenylsulfinylcyclohexanone by ab initio density functional calculations is described. Six conformations corresponding to axial/equatorial isomers and rotation about the exocyclic C2—S bond in each of the RR or RS di
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fff7c3e12a17597e2769625e7c3fda04
https://doi.org/10.1139/v06-040
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3
Chemistry service courses: Dispense with the lab?
Autor: John F. Wojcik
Publikováno v: Journal of Chemical Education. 67:587
It is pedagogically and philosophically unsound to teach chemistry without laboratory experience.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::add5c3a4435d516044fe123cfa5840a5
https://doi.org/10.1021/ed067p587
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6
A kinetic investigation of the binding of azo dyes to cyclo-maltohexaose
Autor: John F. Wojcik, Ronald P. Rohrbach
Publikováno v: Carbohydrate Research. 92:177-181
The equilibrium constants and rate constants for the formation of azo dye-cyclomaltohexaose complexes have been determined at 26.6° and an ionic strength of 0.15. The effect of changing the substituents on the dyes is explained in terms of the sizes
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9a7e72c2ef4fe2d8548d696a0554d39e
https://doi.org/10.1016/s0008-6215(00)80390-0
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7
Azo dye-α-cyclodextrin adduct formation
Autor: John F. Wojcik, W.V. Gerasimowicz
Publikováno v: Bioorganic Chemistry. 11:420-427
Association constants for the complexation of a series of azo dyes with α-cyclodextrin have been determined by means of changes in uv-visible spectra in aqueous solution at pH 7.0, an ionic strength of 0.15 M and at 25 and 35°C. Association constan
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8847510849f31b142bfe7144525f3999
https://doi.org/10.1016/0045-2068(82)90033-5
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9
An equilibrium and kinetic investigation of salt-cycloamylose complexes
Autor: Licesio J. Rodriguez, John F. Wojcik, Ronald P. Rohrbach, Edward M. Eyring
Publikováno v: The Journal of Physical Chemistry. 81:944-948
The equilibrium constants and rate constants for the formation of inclusion complexes of cycloheptaamylose with small inorganic anions were measured by a spectrophotometric technique and an ultrasonic relaxation technique respectively. The stability
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5c98280ee46b932c5a9b9803847a325d
https://doi.org/10.1021/j100525a003
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10
Binding to cyclodextrins: An interpretive model
Autor: John F. Wojcik
Publikováno v: Bioorganic Chemistry. 12:130-140
A model is presented for the interpretation of cyclodextrin inclusion complex binding constants. The binding process is broken down into several steps and various aspects of the process are examined, the importance of nonbonded interactions and solva
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c8c291aa7d998003c6176eb178973f8f
https://doi.org/10.1016/0045-2068(84)90023-3
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