Matches in SemOpenAlex for { <https://semopenalex.org/work/W1995299311> ?p ?o ?g. }
Showing items 1 to 79 of
79
with 100 items per page.
- W1995299311 endingPage "376" @default.
- W1995299311 startingPage "370" @default.
- W1995299311 abstract "The electron spin resonance absorption spectrum of the biphenyl negative ion has been measured at 9.5 mm wavelength in solution in tetra-hydrofuran and in diethylene glycol dimethyl ether (DGDE) over the temperature range -90°C to + 70°C and for concentrations from 1.94 x 10-3 to 4.35 x 10-3M The normal nine line hyperfine spectrum loses its structure with falling temperature for solution in DGDE at about -70°C independent of concentration It is thought that this is due to a decrease in motional narrowing of an anisotropic hyperfine interaction comparable in magnitude with the isotropic hyperfine interaction. With rising temperature the hyperfine structure again disappears. This occurs at -34°C for a concentration 4.35 x 10-3 M and increases with falling concentration to +37°C at 1.94x10-3 M. After loss of structure the line continues to narrow with increasing temperature. Similar but less extensive measurements have been possible for solution in tetrahydrofuran. This effect is thought to be due to exchange, i.e. perturbation of the electron spins at encounters between the radicals which are diffusing through the solvent. An analysis is carried out using a theory proposed by Pake and Tuttle in 1959 in which a quantity related to the ratio of exchange frequency to collision frequency is derived and which should be constant and of order unity. We find this quantity to be indeed of order unity over a wide range of temperature and for the two solvents but that it varies significantly nevertheless. These variations have not been explained and show that a more elaborate theory even than that proposed by Kivelson in 1960 is required." @default.
- W1995299311 created "2016-06-24" @default.
- W1995299311 creator A5044694893 @default.
- W1995299311 creator A5071932444 @default.
- W1995299311 date "1961-09-01" @default.
- W1995299311 modified "2023-09-24" @default.
- W1995299311 title "Exchange Effects and Anisotropy Broadening of the Hyperfine Spin Resonance Spectrum of the Biphenyl Negative Ion in Solution" @default.
- W1995299311 cites W1974470285 @default.
- W1995299311 cites W1980797602 @default.
- W1995299311 cites W2013167242 @default.
- W1995299311 cites W2034254646 @default.
- W1995299311 cites W2038463154 @default.
- W1995299311 cites W2067033446 @default.
- W1995299311 cites W2078610595 @default.
- W1995299311 cites W2090183904 @default.
- W1995299311 cites W2131904845 @default.
- W1995299311 doi "https://doi.org/10.1088/0370-1328/78/3/305" @default.
- W1995299311 hasPublicationYear "1961" @default.
- W1995299311 type Work @default.
- W1995299311 sameAs 1995299311 @default.
- W1995299311 citedByCount "8" @default.
- W1995299311 crossrefType "journal-article" @default.
- W1995299311 hasAuthorship W1995299311A5044694893 @default.
- W1995299311 hasAuthorship W1995299311A5071932444 @default.
- W1995299311 hasConcept C113196181 @default.
- W1995299311 hasConcept C121332964 @default.
- W1995299311 hasConcept C131538251 @default.
- W1995299311 hasConcept C145148216 @default.
- W1995299311 hasConcept C153294291 @default.
- W1995299311 hasConcept C178790620 @default.
- W1995299311 hasConcept C184779094 @default.
- W1995299311 hasConcept C185592680 @default.
- W1995299311 hasConcept C187961010 @default.
- W1995299311 hasConcept C26873012 @default.
- W1995299311 hasConcept C2778870898 @default.
- W1995299311 hasConcept C39353612 @default.
- W1995299311 hasConcept C41999313 @default.
- W1995299311 hasConcept C43617362 @default.
- W1995299311 hasConcept C46141821 @default.
- W1995299311 hasConcept C62520636 @default.
- W1995299311 hasConcept C85725439 @default.
- W1995299311 hasConceptScore W1995299311C113196181 @default.
- W1995299311 hasConceptScore W1995299311C121332964 @default.
- W1995299311 hasConceptScore W1995299311C131538251 @default.
- W1995299311 hasConceptScore W1995299311C145148216 @default.
- W1995299311 hasConceptScore W1995299311C153294291 @default.
- W1995299311 hasConceptScore W1995299311C178790620 @default.
- W1995299311 hasConceptScore W1995299311C184779094 @default.
- W1995299311 hasConceptScore W1995299311C185592680 @default.
- W1995299311 hasConceptScore W1995299311C187961010 @default.
- W1995299311 hasConceptScore W1995299311C26873012 @default.
- W1995299311 hasConceptScore W1995299311C2778870898 @default.
- W1995299311 hasConceptScore W1995299311C39353612 @default.
- W1995299311 hasConceptScore W1995299311C41999313 @default.
- W1995299311 hasConceptScore W1995299311C43617362 @default.
- W1995299311 hasConceptScore W1995299311C46141821 @default.
- W1995299311 hasConceptScore W1995299311C62520636 @default.
- W1995299311 hasConceptScore W1995299311C85725439 @default.
- W1995299311 hasIssue "3" @default.
- W1995299311 hasLocation W19952993111 @default.
- W1995299311 hasOpenAccess W1995299311 @default.
- W1995299311 hasPrimaryLocation W19952993111 @default.
- W1995299311 hasRelatedWork W1971910703 @default.
- W1995299311 hasRelatedWork W2006359188 @default.
- W1995299311 hasRelatedWork W2016149280 @default.
- W1995299311 hasRelatedWork W2030548898 @default.
- W1995299311 hasRelatedWork W2039205844 @default.
- W1995299311 hasRelatedWork W2086452031 @default.
- W1995299311 hasRelatedWork W2125733898 @default.
- W1995299311 hasRelatedWork W2168821349 @default.
- W1995299311 hasRelatedWork W2330028140 @default.
- W1995299311 hasRelatedWork W2333941957 @default.
- W1995299311 hasVolume "78" @default.
- W1995299311 isParatext "false" @default.
- W1995299311 isRetracted "false" @default.
- W1995299311 magId "1995299311" @default.
- W1995299311 workType "article" @default.