Zobrazeno 1 - 10
of 44
pro vyhledávání: '"M. Grottel"'
Publikováno v:
Molecular Physics. 104:3119-3128
A study of 1H NMR second moment and spin-lattice relaxation time for a few deuterated counterparts of bis-thiourea N-methylpyridinium iodide has been performed. It has enabled a description of molecular reorientations in both host and guest sublattic
Publikováno v:
Molecular Physics. 104:1819-1826
Crystal and molecular structures of two orthorhombic phases of bis-thiourea N-methylpyridinium iodide [(NH2)2CS]2C5H5N I− were determined by a single-crystal X-ray diffraction method. Both phases were discovered earlier by DSC analysis. At 297 K th
Publikováno v:
Zeitschrift für Naturforschung A. 58:638-644
505–509 (2004); received April 6, 2004The proton NMR second moment and spin-lattice relaxation time have been studied for polycrys-talline thiourea pyridinium nitrate inclusion compound and its perdeuderated analogues in a widetemperature range. Th
Publikováno v:
Molecular Physics. 100:1969-1973
Proton NMR second moment and spin—lattice relaxation times T 1 and T 1p have been studied for polycrystalline guanidinium hexachloroantimonate C(NH2)3SbCl6 in a wide temperature range. A dynamic inequivalence of two cations has been detected in spi
Publikováno v:
Solid State Communications. 120:119-122
The proton NMR second moment and spin–lattice relaxation time have been studied for polycrystalline tris-guanidinium nonachlorodiantimonate(III) in a wide temperature range. The C 3 reorientation of two types of the cations, hindered by very differ
Publikováno v:
Zeitschrift für Naturforschung A. 55:570-574
The proton NMR second moment and spin-lattice relaxation time of polycrystalline [C(NH2)3]3Bi2Br9 were studied in a wide-temperature range. Dynamical inequivalence of two crystallographically different guanidinium cations has been revealed . The C3 r
Publikováno v:
physica status solidi (b). 207:333-339
Proton and fluorine NMR spectra and spin-lattice relaxation times were measured for polycrystalline tris-guanidinium heptafluorozirconate in a wide temperature range. In-plane C 3 reorientation of the guanidinium cation hindered by the energy barrier
Publikováno v:
Zeitschrift für Naturforschung A. 52:783-788
Proton NMR second moments and spin-lattice relaxation times of polycrystalline C(NH2)3PbI3 and [C(NH2)3]2PbI4 were studied in a wide temperature range. The order-disorder character of the existing solid-solid phase transitions was confirmed and for t
Publikováno v:
Zeitschrift für Naturforschung A. 51:991-996
Proton and fluorine NMR second moments and spin-lattice relaxation times of polycrystalline guanidinium hexafluorozirconate and its deuterated analogue were studied in laboratory (60 MHz) and rotating (H1 = 20 G) frames over a wide range of temperatu
Publikováno v:
Zeitschrift für Naturforschung A. 50:742-748
Proton and fluorine NMR linewidths, second moments, and spin-lattice relaxation times of polycrystalline [C(NH2)3]2SbF5 and C(NH2)3SbF6 were studied in a wide temperature range. For the pentafluoroantimonate, C3-reorientation of the guanidinium catio