Syntéza a charakterizace vanadocenových komplexů s bipyridiny

Bc. Daniela Stříbrná

Bachelor's thesis

Synthesis and characterization of vanadocene complexes with bipyridine

Abstract:

Předkládaná bakalářská práce je zaměřena na syntézu vanadocenových komplexů s bipyridiny, jejich charakterizaci pomocí vhodných analytických a spektroskopických metod. Reakcí Cp2VCl2 (1a), resp. (?5-C5H4Me)2VCl2 (1b) s AgOTf došlo k vytvoření reaktivního intermediátu Cp2V(OTf)2 (2a) resp. (?5-C5H4Me)2V(OTf)2 (2b). Následnou reakcí Cp2V(OTf)2 resp. (?5-C5H4Me)2V(OTf)2 s bipyridiny byly připraveny tyto sloučeniny: komplex [Cp2V(2,2´-bpy)][OTf]2 (3a), komplex [(?5-C5H4Me)2V(2,2´-bpy)][OTf]2 (3b), komplex [Cp2V(5,5´-Me2bpy)][OTf]2 (4a), komplex [(?5-C5H4Me)2V(5,5´-Me2bpy)][OTf]2 (4b), komplex [Cp2V(4,4´-Me2bpy)][OTf]2 (5a), komplex [(?5-C5H4Me)2V(4,4´-Me2bpy)][OTf]2 (5b), komplex [Cp2V{4,4´-(MeO)2bpy}][OTf]2 (6a), komplex [(?5-C5H4Me)2V {4,4´-(MeO)2bpy}][OTf]2 (6b), komplex [Cp2V(dafon)][OTf]2 (7a), komplex [(?5-C5H4Me)2V(dafon)][OTf]2 (7b). Zejména na základě EPR spektroskopie byla navržena chelátová struktura připravených komplexů. V případě komplexů 5a, 6a a 7b byl tento předpoklad podpořen i určením úplné molekulové struktury RTG analýzou.

Abstract:

This presented bachelor theses is focused to synthesis of vanadocene complexes with bipyridines, their characterization using appropriate analytical and spectroscopical methods. Reaction of Cp2VCl2 (1a), resp. (?5-C5H4Me)2VCl2 (1b) with AgOTf leaded to creation reactive intermediate Cp2V(OTf)2 (2a) resp. (?5-C5H4Me)2V(OTf)2 (2b). A following reaction of Cp2V(OTf)2 resp. (?5-C5H4Me)2V(OTf)2 with bipyridines created these compounds: complex [Cp2V(2,2´-bpy)][OTf]2 (3a), complex [(?5-C5H4Me)2V (2,2´-bpy)][OTf]2 (3b), complex [Cp2V(5,5´-Me2bpy)][OTf]2 (4a), complex [(?5-C5H4Me)2V (5,5´-Me2bpy)][OTf]2 (4b), complex [Cp2V(4,4´-Me2bpy)][OTf]2 (5a), complex [(?5-C5H4Me)2V(4,4´-Me2bpy)][OTf]2 (5b), complex [Cp2V{4,4´-(MeO)2bpy}][OTf]2 (6a), complex[(?5-C5H4Me)2V{4,4´-(MeO)2bpy}][OTf]2 (6b), complex [Cp2V(dafon)][OTf]2 (7a), complex [(?5-C5H4Me)2V(dafon)][OTf]2 (7b). Mainly at the base of a EPR spectroscopy measuring was suggested a chelating structure of prepared comlexes. In case of complexes 5a, 6a a 7b was this presumption supported by definic of the whole molecular structure by RTG analysis.

Keywords

lomené metalloceny, vanadocendichlorid, bipyridiny, chelátující ligandy

Language used: Czech

Date on which the thesis was submitted / produced: 9. 7. 2013

Thesis defence

• Date of defence: 26. 8. 2013
• Supervisor: prof. Ing. Jaromír Vinklárek, Dr.

University of Pardubice

Faculty of Chemical Technology

Bachelor programme / field:
Farmacochemistry and Medicinal Materials / Farmacochemistry and Medicinal Materials