Two-dimensional 31P exchange NMR study of adsorbed phosphine layers

被引：6

作者：

Gay, ID ^{[1
]}

Hu, B ^{[1
]}

Sheng, TC ^{[1
]}

机构：

[1] Simon Fraser Univ, Dept Chem, Burnaby, BC V5A 1S6, Canada

来源：

LANGMUIR | 1999年 / 15卷 / 19期

关键词：

D O I：

10.1021/la990302i

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Adsorption of organic phosphines on acidic surfaces produces phosphonium ions, which can be detected by P-31 NMR, since their chemical shift is different from that of the free phosphine. In the presence of excess adsorbed phosphine, lines from both phosphine and phosphonium are observed. Two-dimensional exchange NMR is applied to trimethyl- and triphenylphosphines adsorbed on SiO2-Al2O3 and demonstrates that free phosphine and phosphonium ions are undergoing chemical exchange at ambient temperatures. There are two populations of PMe3H+ which exchange with different rate constants, 7 x 10(4) and 800 s(-1) respectively. PPh3H+ exchanges much more slowly with PPh3, having a rate constant of 14 s(-1).

引用

页码：6132 / 6134

页数：3

共 50 条

[1] Measurement of the lateral diffusion of dipalmitoylphosphatidylcholine adsorbed on silica beads in the absence and presence of melittin:: A 31P two-dimensional exchange solid-state NMR study
Picard, F
Paquet, MJ
Dufourc, EJ
Auger, M
BIOPHYSICAL JOURNAL, 1998, 74 (02) : 857 - 868
[2] Evaluation of Zeolite Acidity by 31P MAS NMR Spectroscopy of Adsorbed Phosphine Oxides: Quantitative or Not?
Zasukhin, Dmitry S.
Kasyanov, Ivan A.
Kolyagin, Yury G.
Bulygina, Anna I.
Kharas, Karl C.
Ivanova, Irina I.
ACS OMEGA, 2022, 7 (14): : 12318 - 12328
[3] Measurement of the Lateral Diffusion of Dipalmitoylphosphatidylcholine Adsorbed on Silica Beads in the Absence and Presence of Melittin: A 31P Two-@Dimensional Exchange Solid-@State NMR Study
Picard, F.
Paquet, M.-J.
Dufourc, E. J.
Auger, M.
Biophysical Journal, 1998, 74 (01)
[4] Two-Dimensional 31P,1H NMR Spectroscopic Profiling of Phospholipids in Cheese and Fish
Kaffarnik, Stefanie
Ehlers, Ina
Grobner, Gerhard
Schleucher, Jurgen
Vetter, Walter
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, 2013, 61 (29) : 7061 - 7069
[5] A 31P NMR study of tertiary phosphine complexes of platinum(II) and palladium(II)
Sabounchei, SJ
Jodaien, V
Samiee, S
PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS, 2004, 179 (03) : 473 - 481
[6] Characterization of the Surface Acidity of MFI Zeolite Nanosheets by 31P NMR of Adsorbed Phosphine Oxides and Catalytic Cracking of Decalin
Seo, Yongbeom
Cho, Kanghee
Jung, Younjae
Ryoo, Ryong
ACS CATALYSIS, 2013, 3 (04): : 713 - 720
[7] Nucleophilic substitution reactions using phosphine nucleophiles: An introduction to 31P NMR
Sibbald, Paul A.
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2013, 245
[8] Structural disorder and the effects of aging in a phosphate glass: Results from two-dimensional 31P PASS NMR spectroscopy
Kaseman, Derrick C.
Endo, Takatsugu
Sen, Sabyasachi
JOURNAL OF NON-CRYSTALLINE SOLIDS, 2013, 359 : 33 - 39
[9] Study of ion exchange selectivity of organic ions by using 31P NMR spectroscopy
Marton, A
Sakashita, H
Miura, Y
Hiramatsu, E
Miyazaki, Y
TALANTA, 2003, 59 (02) : 217 - 227
[10] Decomposition of adsorbed VX on activated carbons studied by 31P MAS NMR
Columbus, Ishay
Waysbort, Daniel
Shmueli, Liora
Nir, Ido
Kaplan, Doron
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2006, 40 (12) : 3952 - 3958

← 1 2 3 4 5 →