Nbis triazinyl pyridines books

Origin of selectivity of a triazinyl ligand for americium. Recent strategies for the synthesis of pyridine derivatives. Authors contributing to rsc publications journal articles, books or book chapters do not need to formally request permission to reproduce material contained in this article provided that the correct acknowledgement is given with the reproduced material. The molecular origin of the selectivity of ndonor ligands, such as alkylated bis triazinyl pyridines btps, for actinide complexation in the presence of lanthanides is still largely unclear. Based upon the slight differences in forbital distribution, a new class of soft nitrogendonor ligands, the sulfonated bis triazinyl bipyridin. There is still an evident need for selective and stable ligands able to separate actinideiii from lanthanideiii metal ions in view of the treatment of the accumulated radioactive waste and of the recycling of minor actinides. New bistriazinyl pyridines for selective extraction of. With this in mind, we carried out a systematic electrochemical and spectroelectrochemical sec investigation of reicarbonyl complexes with ligands possessing strong. Transfer hydrogenation of ketones catalyzed by 2,6. Complexation reactions of hydrated neptunyl with c2btphen and btphen assisted by a nitrate ion are favorable thermodynamically, resulting from the least deformation of the ligand and strong. Hydrophilic clicked 2,6bistriazolylpyridines endowed. Trivalent lanthanide interactions with a terdentate bis. Bis triazinyl pyridines btps exhibit solution selectivity for trivalent americium over lanthanides ln, the origins of which remain uncertain.

Use of electrospray mass spectrometry esi ms for the study of europiumiii complexation with bisdialkyltriazinyl pyridines and its implications in the design of new extracting agents. Check all that apply please note that only the first page is available if you have not selected a reading option after clicking read article. A series of 1,2,4triazine derivatives known as bis triazinyl bipyridines btps have been considered as possible extractants for use in the advanced nuclear reprocessing. For medical information relating to covid19, please consult the world health organisation or local healthcare provision. An improved hydrolyticallystable bistriazinylpyridine.

Trivalent lanthanide interactions with a terdentate bisdialkyltriazinylpyridine ligand studied by electrospray ionization mass spectrometry may 2003 inorganic chemistry 427. The contribution of an orthophenanthroline bridging group is relatively more pronounced compared to its pyridine counterpart in ligandexchange reaction. Gasphase complexes of americium and lanthanides with a. The results indicate a spectacular enhancement in the selectivity as com. Timeresolved and steadystate irradiation of hydrophilic. Recent strategies for the synthesis of pyridine derivatives matthew d. Efficient separation of the actinides from the lanthanides is a critical challenge in the development of a more sophisticated spent nuclear fuel recycling process. Influence of a bridging group and the substitution effect.

We have herein demonstrated that hydrophilic 2,6bistriazolyl pyridines are able to strip all actinides in all the different oxidation states from a diglycolamide. Use of electrospray mass spectrometry esims for the. Btps are molecules containing a pyridine ring bonded to two 1,2,4triazin3yl groups. Based upon the slight differences in forbital distribution, a new class of soft nitrogendonor ligands, the sulfonated bis triazinyl bi pyridines, has been identified and shown to be successful.