Polyfluoroalkylated tripyrazolylmethane ligands: Synthesis and complexes

0369772 - ÚACH 2012 RIV CH eng J - Článek v odborném periodiku
Skalická, V. - Rybáčková, M. - Skalický, M. - Kvíčalová, Magdalena - Cvačka, Josef - Březinová, Anna - Čejka, J. - Kvíčala, J.
Polyfluoroalkylated tripyrazolylmethane ligands: Synthesis and complexes.
Journal of Fluorine Chemistry. Roč. 132, č. 7 (2011), s. 434-440. ISSN 0022-1139. E-ISSN 1873-3328
Grant CEP: GA MŠMT ME 857; GA MŠMT ME09114
Výzkumný záměr: CEZ:AV0Z40320502; CEZ:AV0Z40550506
Klíčová slova: tripyrazolylmethane * Tpm * tripyrazolylethanol * fluorinated * perfluoroalkylation * ligand
Kód oboru RIV: CC - Organická chemie
Impakt faktor: 2.033, rok: 2011

Tripyrazolylmethanes represent a novel class of uncharged ligands analogous to charged tripyrazolylborates (scorpionates), which are isoelectronic and isolobal with cyclopentadienides. We report here a straightforward synthesis of the first polyfluoroalkylated tripyrazolylmethane ligands bearing C(4)F(9)-C(12)F(25) ponytails, based on allylation/perfluoroalkylation/reduction sequence of transformations of 2,2,2-tripyrazol-1-ylethanol. Model complexation reactions of these ligands gave sandwich complexes of copper(II), nickel(II), cobalt(II) and iron(II), the structure of which was confirmed by detailed MS analysis, as well as by NMR spectroscopy for the fourth diamagnetic complex. Fluorophilicity of the ligands and their complexes peaks for C(10)F(21) ponytail but lies below zero.
Trvalý link: http://hdl.handle.net/11104/0203763