Zobrazeno 1 - 10
of 51
pro vyhledávání: '"B. A. Dunell"'
Publikováno v:
Journal of Magnetic Resonance (1969). 32:391-402
Proton spin-lattice relaxation times have been measured at 16, 31, and 59 MHz in 4-methyl-2,6-ditertiarybutyl phenol between 80 K and its melting point, 340 K. The variation of T1 with temperature shows too distinct minima. The lower-temperature mini
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::456653c3b758f175904bf40bc8118353
https://doi.org/10.1016/0022-2364(78)90054-9
https://doi.org/10.1016/0022-2364(78)90054-9
Autor:
B. A. Dunell, Christopher I. Ratcliffe
Publikováno v:
J. Chem. Soc., Faraday Trans. 2. 77:2169-2180
Spin–lattice relaxation times, T1, have been measured over appropriate temperature ranges for sulphamic acid (NH3SO3), caesium trifluoromethanesulphonate (CF3SO3Cs) and caesium methanesulphonate (CH3SO3Cs). Reorientation about the C3v axis of the t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c5b2608c2c58770b63ecef4c40fd2083
https://doi.org/10.1039/f29817702169
https://doi.org/10.1039/f29817702169
Publikováno v:
Journal of Magnetic Resonance (1969). 60:486-489
For many materials 13C NMR lines obtained in solid and solution states differ by no more than a few ppm; however, when many lines are closely spaced, direct correlation between solid and solution lines is impossible. Although many t~c~~i~~e§ exist f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a67d95b053104ceed8e5a3b3ad7cc59a
https://doi.org/10.1016/0022-2364(84)90061-1
https://doi.org/10.1016/0022-2364(84)90061-1
Autor:
Christopher I. Ratcliffe, B. A. Dunell
Publikováno v:
J. Chem. Soc., Faraday Trans. 2. 77:2181-2189
Proton spin–lattice relaxation times have been studied in para-toluenesulphonic acid hydrate, CH3C6H4SO3–H3O+, as a function of temperature between 80 K and its melting point. Two relaxation processes occur which have been attributed to three-fol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::580dfabc258f1e201e60e51261f311bf
https://doi.org/10.1039/f29817702181
https://doi.org/10.1039/f29817702181
Autor:
J. A. Ripmeester, B. A. Dunell
Publikováno v:
Canadian Journal of Chemistry. 52:191-197
The adiabatic rapid passage (ARP) technique was applied to the study of molecular motion in solids. Second moments and spin–lattice relaxation times for solid furan and benzene were derived using ARP methods from 77 °K to the respective melting po
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6289c1d327fb01bf162dba3ca86047a0
https://doi.org/10.1139/v74-031
https://doi.org/10.1139/v74-031
Autor:
T. T. Ang, B. A. Dunell
Publikováno v:
Canadian Journal of Chemistry. 54:1985-1990
Spin–lattice relaxation times of tetramethylphosphonium chloride, bromide, and iodide were measured between 100 and 500 K and the two minima in T1 found for each compound have been assigned to methyl group reorientation and whole cation tumbling. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::325edcccb28547aab4b33d2be5186b7a
https://doi.org/10.1139/v76-284
https://doi.org/10.1139/v76-284
Publikováno v:
Journal of Magnetic Resonance (1969). 67:217-230
The intensities of peaks in spinning sidebands relative to those of the central band in magic angle spinning NMR spectra have been used in a graphical method of Herzfeld and Berger to determine the principal components of each of the two chemical shi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6965dc432699e34eb0b1e735c37d1815
https://doi.org/10.1016/0022-2364(86)90430-0
https://doi.org/10.1016/0022-2364(86)90430-0
Autor:
B. A. Dunell, T. T. Ang
Publikováno v:
Canadian Journal of Chemistry. 52:1840-1847
The spin–lattice relaxation times of the solid complexes of trimethylamine with I2, ICl, Br2, BCl3, and BBr3 and the relaxation null times of trimethylphosphine – boron trichloride and – boron tribromide have been measured over a range of tempe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e44f7e478bd1e32212c5aba53c8c7bf
https://doi.org/10.1139/v74-263
https://doi.org/10.1139/v74-263
Autor:
B. A. Dunell, T. T. Ang
Publikováno v:
J. Chem. Soc., Faraday Trans. 2. 75:169-177
Tetramethylarsonium chloride, bromide and iodide have been prepared and their spin–lattice relaxation times measured by proton magnetic resonance pulse spectrometry in the temperature range 77–540 K. The two minima in T1 found for each salt have
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc5ca5f9f98623cbe3f00a049167f9f5
https://doi.org/10.1039/f29797500169
https://doi.org/10.1039/f29797500169
Publikováno v:
Molecular Physics. 34:241-249
The 19F nuclear resonance spectra and spin-lattice relaxation times have been observed in solid PF3 over the temperature range 77 K to its melting point at 121·8 K. Within this temperature range PF3 exists in three crystallographic phases. Phase I i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6668c4a80f482c2d7532007f06882e4f
https://doi.org/10.1080/00268977700101671
https://doi.org/10.1080/00268977700101671