| | 1 | Author
| Taka-Aki Nihei, Shin'. Ichi, Ishimaru, Ryuichi Ikeda | Requires cookie* | | | Title
| C1 NQR Studies of Hydrogen Transfer in Crystalline /7-Chlorobenzoic Acid  | | | | Abstract
| 35 C1 NQR frequencies and spin-lattice relaxation times 7, Q were measured inp-ClC 6 H 4 C0 2 H(PCB A) and p-ClQF^CC^DtPCBA-d,) at 77-333 K. T lQ in PCB A gave a shallow minimum of 8.0 ms at ca. 110 K, which could be explained by a double proton transfer mechanism in the carboxylic acid dimer referring to *H NMR data giving a T 1H minimum at almost the same temperature. PCBA-d, showed temperature dependent NQR frequencies quite analogous to those in PCBA, whereas their r 1Q behavi-our was quite different in its minimum value and its temperature as well as temperature gradient. These results were explained by suppressed deuteron tunnelling and the Ubbelohde effect. | | | |
Reference
| Z. Naturforsch. 55a, 355—358 (2000); received August 27 1999 | | | |
Published
| 2000 | | | |
Keywords
| CI NQR, Hydrogen-Bond, Hydrogen-transfer, Tunneling | | | |
Similar Items
| Find | | | DEBUG INFO
| | | | | TEI-XML for
| default:Reihe_A/55/ZNA-2000-55a-0355.pdf | | | | Identifier
| ZNA-2000-55a-0355 | | | | Volume
| 55 | |
|
