Complexation of Cm(III) and Eu(III) with CyMe4-BTPhen and CyMe4-BTBP studied by time resolved laser fluorescence spectroscopy
The complexation of Cm(III) and Eu(III) with 2,9-bis(5,5,8,8-tetramethyl-5,6,7,8-tetrahydro-1,2,4-benzotriazin-3-yl)-1,10-phenanthroline (CyMe4-BTPhen) and 6,6′-bis(5,5,8,8-tetramethyl-5,6,7,8-tetrahydro-1,2,4-benzotriazin-3-yl)-2,2′-bipyridine (CyMe4-BTBP) in methanolic solution was investigated by...
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| Main Authors: | , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
2014
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| In: |
Dalton transactions
Year: 2013, Volume: 43, Issue: 6, Pages: 2684-2694 |
| ISSN: | 1477-9234 |
| DOI: | 10.1039/C3DT52204K |
| Online Access: | Resolving-System, lizenzpflichtig, Volltext: https://doi.org/10.1039/C3DT52204K Verlag, lizenzpflichtig, Volltext: https://pubs.rsc.org/en/content/articlelanding/2014/dt/c3dt52204k 
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| Author Notes: | Antje Bremer, Daniel M. Whittaker, Clint A. Sharrad, Andreas Geist and Petra J. Panak |
| Summary: | The complexation of Cm(III) and Eu(III) with 2,9-bis(5,5,8,8-tetramethyl-5,6,7,8-tetrahydro-1,2,4-benzotriazin-3-yl)-1,10-phenanthroline (CyMe4-BTPhen) and 6,6′-bis(5,5,8,8-tetramethyl-5,6,7,8-tetrahydro-1,2,4-benzotriazin-3-yl)-2,2′-bipyridine (CyMe4-BTBP) in methanolic solution was investigated by TRLFS. For both ligands, the 1:2 complex with the particular metal ion is the only species observed in equilibrated samples. The species distribution for various ligand concentrations was determined and stability constants of the 1:2 complexes were derived (log β2 = 13.8 ± 0.2 (Cm(III)-CyMe4-BTPhen), log β2 = 11.6 ± 0.4 (Eu(III)-CyMe4-BTPhen), log β2 = 12.4 ± 0.3 (Cm(III)-CyMe4-BTBP) and log β2 = 11.3 ± 0.3 (Eu(III)-CyMe4-BTBP)). Biphasic experiments in combination with TRLFS studies on the organic phase revealed the formation of ternary complexes with two CyMe4-BTPhen or -BTBP molecules and additional coordination of a nitrate anion as species formed during the extraction process. |
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| Item Description: | First published 11 Dec 2013 Gesehen am 13.10.2020 |
| Physical Description: | Online Resource |
| ISSN: | 1477-9234 |
| DOI: | 10.1039/C3DT52204K |