Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Dick Sandström"'
Publikováno v:
Biochimica et Biophysica Acta (BBA) - Bioenergetics. 1757:1592-1596
The X-ray crystal structure of the mono-hydrate of 2,2-bis(imidazol-1-ylmethyl)-4-methylphenol has been determined. Three hydrogen bonds hold water very tightly in the crystal, as determined by deuterium solid-state NMR. The hydrogen bond between the
Autor:
Sergey V. Dvinskikh, Dick Sandström
Publikováno v:
Journal of Magnetic Resonance. 175:163-169
The popular PISEMA experiment is highly sensitive to the 1 H chemical shift dispersion and the choice of the 1 H carrier frequency. This is due to the off-resonance 1 H irradiation in the FSLG-CP sequence employed during the dipolar evolution period.
Publikováno v:
The Journal of Physical Chemistry A. 109:4442-4451
In this paper, we present a variable temperature (2)H solid-state NMR investigation of cryptophane-E:chloroform and cryptophane-E:dichloromethane inclusion complexes. The (2)H line shapes and nuclear spin relaxation rates were analyzed in terms of th
Publikováno v:
Phys. Chem. Chem. Phys.. 7:607-613
Recently (Dvinskikh et al., J. Magn. Reson., 2003, 164, 165 and Dvinskikh et al., J. Magn. Reson., 2004, 168, 194), some of us introduced two efficient solid-state NMR techniques for the determination of heteronuclear dipolar couplings under magic-an
Publikováno v:
The Journal of Physical Chemistry A. 109:57-63
The protonated form of 1,8-bis(dimethylamino)naphthalene (DMANH(+)) consists of a rigid, aromatic framework, substituted by two amino groups that are connected by a strong, symmetric (on the NMR time-scale) hydrogen bond bridge. The reorientational m
Publikováno v:
Journal of Magnetic Resonance
A novel MAS NMR approach is presented for the determination of heteronuclear dipolar couplings in unoriented materials. The technique is based on the proton-detected local field (PDLF) protocol, and achieves dipolar recoupling by R-type radio-frequen
Publikováno v:
Chemical Physics Letters. 388:208-211
In this Letter, we demonstrate the use of separated local-field NMR spectroscopy under magic-angle spinning conditions as a means of studying molecular reorientation in solid inclusion compounds. S ...
Publikováno v:
Chemical Physics Letters
We present a new NMR method for measuring 1H–2H dipolar couplings in macroscopically oriented media. To overcome the lack of dipolar resolution in 1D 1H and 2H spectra of deuterated molecules, we use a 2D heteronuclear correlation experiment where
Publikováno v:
The Journal of Chemical Physics. 119:2738-2746
This paper describes a new approach for analysis of residual dipolar couplings (RDCs). The method, which focuses on construction of the conformational distribution function, is applied to 4-n-pentyl-4′-cyanobiphenyl in the nematic phase. The RDCs a
Publikováno v:
The Journal of Chemical Physics
We report a 13C NMR investigation of 1,2,3,5,6,7-hexaoctyloxy-rufigallol in the solid and columnar phases using various 2H- and 13C-labeled isotopomers. The measurements were performed under both static and magic-angle spinning conditions. The confor