Total in June 1092 service applications were carried out.
All together measured:
- 1061 1H spectra
- 241 13C spectra
- 72 DEPT spectra
- 34 COSY spectra
- 13 NOESY spectra
- 46 31P spectra
- 36 19F spectra
176 applications were carried out.
Total in June 1092 service applications were carried out.
All together measured:
176 applications were carried out.
Total in May 1457 service applications were carried out.
All together measured:
196 applications were carried out which jointly took 1831 hours of measurements.
Artem Grevtsev and Anton Mazur have presented two educational research projects which high-school students of leading physical and mathematical schools of St. Petersburg could run during their summer practice in June.
For the first time at CMR Dr. Benjamin Koeppe has synthsized a mixture of deuterated freon gases (CDF3/CDF2Cl). Liquefied freons may serve as a solvent for extra low-temperature NMR experiments in liquid state (down to 100 K).
References:
1. B. Koeppe, J. Guo, P.M. Tolstoy, G.S. Denisov, H.-H. Limbach, “Solvent and H/D Isotope Effects on the Proton Transfer Pathways in Heteroconjugated Hydrogen-Bonded Phenol-Carboxylic Acid Anions Observed by Combined UV–vis and NMR Spectroscopy”, J. Am. Chem. Soc. 2013, 135, 7553-7566. DOI: 10.1021/ja400611x.
2. J. Guo, P.M. Tolstoy, B. Koeppe, N.S. Golubev, G.S. Denisov, S.N. Smirnov, H.-H. Limbach, “Hydrogen Bond Geometries and Proton Tautomerism of Homo-Conjugated Anions of Carboxylic Acids Studied via H/D Isotope Effects on 13C NMR Chemical Shifts”, J. Phys. Chem. A 2012, 116, 11180-11188. DOI: 10.1021/jp304943h.
3. D. Ajami, P.M. Tolstoy, H. Dube, S. Odermatt, B. Koeppe, J. Guo, H.-H. Limbach, J. Rebek Jr., “Compressed Hydrogen Bonds Isolated in Encapsulation Complexes”, Angew. Chem. Int. Ed. 2011, 50, 528-531. DOI: 10.1002/anie.201002182.
4. P.M. Tolstoy, P. Schah-Mohammedi, S.N. Smirnov, N.S. Golubev, G.S. Denisov, H.-H. Limbach, „Characterization of Fluxional Hydrogen-Bonded Complexes of Acetic Acid and Acetate by NMR: Geometries and Isotope and Solvent Effects”, J. Am. Chem. Soc., 2004, 126, 5621-5634. DOI: 10.1021/ja039280j.
Dr. Benjamin Koeppe (Humboldt-Universität zu Berlin, Germany), who previously worked in the group of Prof. Dr. Hans-Heinrich Limbach and developed a technique for the combined acquisition of NMR and UV-vis absorption spectra (UVNMR), is installing and demonstrating the equipment at the CMR. The figure shows NMR and UV-vis spectra of 2-chloro-4-nitrophenol dissolved in chloroform, obtained simultaneously within the magnet of an NMR spectrometer..
Total in April 1664 service applications were carried out.
All together measured:
208 applications were carried out which jointly took 1831 hours of measurements.
On April 24th 2015 Behruz Abtahi (representative of the Ministry of Science, Research and Technologies of Iran, Counsellor of the Embassy of the Iranian Republic), Mohammad Mehdi Tehranchi (Chancellor of Shahid Beheshti University, Tehran) and Kayvan Hosseini (Assistant professor at Allameh Tabatabai University, Tehran) have visited the center.
A postdoc in Prof. Dr. Nikolay R. Skrynnikov’s BioNMR laboratory, Kerstin Kampf, is researching temperature dependence of dynamics in intrinsically disordered proteins.
Total in March 1988 service applications were carried out.
All together measured:
212 applications were carried out which jointly took 2540 hours of measurements.
As part of the course “Experimental methods in NMR” students of Physics Department have reviewed a modern scientific equipment in our center.