30902 Conferences false [["0", "Abstract Template"], ["4", "Book of Abstracts"], ["2", "Conference Logo"], ["5", "Conference Photo"], ["1", "Material related to producing the manuscript for HFI2010 Proceedings"], ["minutes", "Minutes"], ["notes", "Notes"], ["paper", "Paper"], ["poster", "Poster"], ["3", "Poster sessions"], ["summary", "Summary"], ["slides", "TIMETABLE"]] ISOLDE tina.osborne@cern.ch 17068 hfi2010@cern.ch <p align="center"> <strong>3rd Joint International Conference on Hyperfine Interactions and International Symposium on Nuclear Quadrupole Interactions</strong><br /> &nbsp;</p> <p> <strong><img alt="" src="http://indico.cern.ch/getFile.py/access?resId=0&amp;materialId=0&amp;confId=81908" /> All the preprints from HFI2012 (and also HFI2010) are available on a dedicated mini-site, which can be found <a href="https://espace.cern.ch/ISOLDE-SSP/HFI2010">here</a>.</strong></p> <br /> False CERN

CH - 1211 Geneva 23 Switzerland

500-1-001 - Main Auditorium https://maps.cern.ch/mapsearch/mapsearch.htm?loc=['500/1-001'] 2010-09-12T16:30:00 2010-09-17T14:00:00 2008-03-20T10:37:14 2013-05-07T08:31:28 Europe/Zurich University of Kwazulu-Natal 6 false [["0", "Abstract Template"], ["4", "Book of Abstracts"], ["2", "Conference Logo"], ["5", "Conference Photo"], ["1", "Material related to producing the manuscript for HFI2010 Proceedings"], ["minutes", "Minutes"], ["notes", "Notes"], ["paper", "Paper"], ["poster", "Poster"], ["3", "Poster sessions"], ["summary", "Summary"], ["slides", "TIMETABLE"]] Resonance Methods 1 POSTER Nihon University, Japan asaji@chs.nihon-u.ac.jp Nihon University, Japan asaji@chs.nihon-u.ac.jp Nihon University, Japan Okayama University, Japan National Maritime Research Institute, Japan Bruker AXS K. K. University of Ljubljana, Jozef Stefan Institute, Slovenia, Jozef Stefan Institute, Slovenia CERN

CH - 1211 Geneva 23 Switzerland

500-1-001 - Main Auditorium https://maps.cern.ch/mapsearch/mapsearch.htm?loc=['500/1-001'] In the hydrate crystal of 1:1 salt with 1,3-diazine and chloranilic acid (H2ca), (1,3-diazineH)∙H2O∙Hca, an unique hydrogen-bonded molecular aggregate is formed. A single proton transfer from chloranilic acid to 1,3-diazine results in 1,3-diazinium cation, 1,3-diazineH+, and hydrogen chloranilate anion, Hca-, in the crystal. There exists hydrogen bond between 1,3-diazinium ion and water (H2O) of crystallization, and between the H2O and hydrogen chloranilate ion. X-ray crystal analysis [1] revealed proton disorder in the N-H…O hydrogen bond at 225 K (Fig. 1). In order to reveal dynamic aspect of this disorder, 35Cl NQR measurements were conducted. Fig. 2 shows temperature dependence of the NQR frequencies. Two resonance lines observed at 35.973 and 35.449 MHz at 321 K split into four lines below Tc = 198 K clearly showing occurrence of a solid-solid phase transition; 36.565, 36.357, 36.011, 35.974 MHz at 77 K. Temperature dependence of spin-lattice relaxation time T1 in high-temperature phase was observed to obey an Arrhenius-type relation with the activation energy of 8.5 kJ mol-1. This result leads to the conclusion that proton exchange in the N-H…O hydrogen bond takes place in the high-temperature phase. Below Tc the symmetry related N-H…O hydrogen bonds shown in Fig. 1 become non-equivalent and one of them falls in the ordered state [1]. Specific heat measurements by DSC resulted in the transition entropy of 1.3 J K-1 per 1 mole [(1,3-diazineH)∙H2O∙Hca]2 which is far less than 2R ln2 = 11.5 J K-1 mol-1. It may be expected that proton ordering is not complete even in LTP and proton exchange in the two hydrogen bonds does not occur independently but concertedly in the high-temperature phase. [1] K. Gotoh, T. Asaji, and H. Ishida, Acta Cryst. C66 (2010) o114. Keywords: Phase transition, Order-disorder, Hydrogen bond, Proton exchange, NQR 0 doc http://indico.cern.ch/images/word.png word file ppt http://indico.cern.ch/images/powerpoint.png powerpoint file pdf http://indico.cern.ch/images/pdf_small.png pdf file odt http://indico.cern.ch/images/writer.png writer file odp http://indico.cern.ch/images/impress.png presentation file ods http://indico.cern.ch/images/calc.png spreadsheet file other http://indico.cern.ch/images/file_small.png unknown type file link http://indico.cern.ch/images/link.png link 4 doc http://indico.cern.ch/images/word.png word file ppt http://indico.cern.ch/images/powerpoint.png powerpoint file pdf http://indico.cern.ch/images/pdf_small.png pdf file odt http://indico.cern.ch/images/writer.png writer file odp http://indico.cern.ch/images/impress.png presentation file ods http://indico.cern.ch/images/calc.png spreadsheet file other http://indico.cern.ch/images/file_small.png unknown type file link http://indico.cern.ch/images/link.png link 2 doc http://indico.cern.ch/images/word.png word file ppt http://indico.cern.ch/images/powerpoint.png powerpoint file pdf http://indico.cern.ch/images/pdf_small.png pdf file odt http://indico.cern.ch/images/writer.png writer file odp http://indico.cern.ch/images/impress.png presentation file ods http://indico.cern.ch/images/calc.png spreadsheet file other http://indico.cern.ch/images/file_small.png unknown type file link http://indico.cern.ch/images/link.png link 5 doc http://indico.cern.ch/images/word.png word file ppt http://indico.cern.ch/images/powerpoint.png powerpoint file pdf http://indico.cern.ch/images/pdf_small.png pdf file odt http://indico.cern.ch/images/writer.png writer file odp http://indico.cern.ch/images/impress.png presentation file ods http://indico.cern.ch/images/calc.png spreadsheet file other http://indico.cern.ch/images/file_small.png unknown type file link http://indico.cern.ch/images/link.png link 1 doc http://indico.cern.ch/images/word.png word file ppt http://indico.cern.ch/images/powerpoint.png powerpoint file pdf http://indico.cern.ch/images/pdf_small.png pdf file odt http://indico.cern.ch/images/writer.png writer file odp http://indico.cern.ch/images/impress.png presentation file ods http://indico.cern.ch/images/calc.png spreadsheet file other http://indico.cern.ch/images/file_small.png unknown type file link http://indico.cern.ch/images/link.png link poster doc http://indico.cern.ch/images/word.png word file ppt http://indico.cern.ch/images/powerpoint.png powerpoint file pdf http://indico.cern.ch/images/pdf_small.png pdf file odt http://indico.cern.ch/images/writer.png writer file odp http://indico.cern.ch/images/impress.png presentation file ods http://indico.cern.ch/images/calc.png spreadsheet file other http://indico.cern.ch/images/file_small.png unknown type file link http://indico.cern.ch/images/link.png link 3 doc http://indico.cern.ch/images/word.png word file ppt http://indico.cern.ch/images/powerpoint.png powerpoint file pdf http://indico.cern.ch/images/pdf_small.png pdf file odt http://indico.cern.ch/images/writer.png writer file odp http://indico.cern.ch/images/impress.png presentation file ods http://indico.cern.ch/images/calc.png spreadsheet file other http://indico.cern.ch/images/file_small.png unknown type file link http://indico.cern.ch/images/link.png link slides doc http://indico.cern.ch/images/word.png word file ppt http://indico.cern.ch/images/powerpoint.png powerpoint file pdf http://indico.cern.ch/images/pdf_small.png pdf file odt http://indico.cern.ch/images/writer.png writer file odp http://indico.cern.ch/images/impress.png presentation file ods http://indico.cern.ch/images/calc.png spreadsheet file other http://indico.cern.ch/images/file_small.png unknown type file link http://indico.cern.ch/images/link.png link 2013-06-20 2013-06-21