| Autor: |
Prock J; Institute of General, Inorganic and Theoretical Chemistry Centrum for Chemistry and Biomedicine University of Innsbruck Innrain 80-82, A -6020 Innsbruck Austria., Ehrmann K; Institute of General, Inorganic and Theoretical Chemistry Centrum for Chemistry and Biomedicine University of Innsbruck Innrain 80-82, A -6020 Innsbruck Austria., Viertl W; Institute of General, Inorganic and Theoretical Chemistry Centrum for Chemistry and Biomedicine University of Innsbruck Innrain 80-82, A -6020 Innsbruck Austria., Pehn R; Institute of General, Inorganic and Theoretical Chemistry Centrum for Chemistry and Biomedicine University of Innsbruck Innrain 80-82, A -6020 Innsbruck Austria., Pann J; Institute of General, Inorganic and Theoretical Chemistry Centrum for Chemistry and Biomedicine University of Innsbruck Innrain 80-82, A -6020 Innsbruck Austria., Roithmeyer H; Institute of General, Inorganic and Theoretical Chemistry Centrum for Chemistry and Biomedicine University of Innsbruck Innrain 80-82, A -6020 Innsbruck Austria., Bendig M; Institute of General, Inorganic and Theoretical Chemistry Centrum for Chemistry and Biomedicine University of Innsbruck Innrain 80-82, A -6020 Innsbruck Austria., Rodríguez Villalón A; Institute of General, Inorganic and Theoretical Chemistry Centrum for Chemistry and Biomedicine University of Innsbruck Innrain 80-82, A -6020 Innsbruck Austria., Kopacka H; Institute of General, Inorganic and Theoretical Chemistry Centrum for Chemistry and Biomedicine University of Innsbruck Innrain 80-82, A -6020 Innsbruck Austria., Dumfort A; Institute of General, Inorganic and Theoretical Chemistry Centrum for Chemistry and Biomedicine University of Innsbruck Innrain 80-82, A -6020 Innsbruck Austria., Oberhauser W; Istituto di Chimica dei Composti Organometallici (ICCOM-CNR) Area di Ricerca CNR di Firenze via Madonna del Piano 10 50019 Sesto Fiorentino Italy., Clausing ST; Johannes Kepler University Linz Institute of Inorganic Chemistry Altenbergerstraße 69, A -4040 Linz Austria., Knör G; Johannes Kepler University Linz Institute of Inorganic Chemistry Altenbergerstraße 69, A -4040 Linz Austria., Brüggeller P; Institute of General, Inorganic and Theoretical Chemistry Centrum for Chemistry and Biomedicine University of Innsbruck Innrain 80-82, A -6020 Innsbruck Austria. |
| Abstrakt: |
The new bis(bidentate) tetraphosphane cis , trans , cis -1,2,3,4-tetrakis(diphenylphosphanyl)buta-1,3-diene (dppbd) ( 7 ) was obtained by applying a photochemical synthetic protocol. The key step of the photochemical reaction consisted of an intramolecular [2+2] cycloaddition involving a C-C double and triple bond of the Pt-dimer species of the formula [Pt 2 Cl 4 (dppa)( trans -dppen)] ( 2 ) {dppa = 1,2-bis(diphenylphosphanyl)acetylene and dppen = 1,2-bis(diphenylphosphanyl)ethene} leading to [Pt 2 Cl 4 (dppbd)] ( 5 ). The asymmetrically bridged precursor complex 2 was obtained by combinatorial chemistry. Single crystal X-ray structure analyses of 2 and 5 proved that the intramolecular photochemical reaction occurred. Cyanolysis of 5 gave 7 , which was oxidized to dppbdO4 ( 8 ). Compounds 7 , 8 , and the Pd II dimer complex [Pd 2 Cl 4 (dppbd)] ( 9 ) were characterized in the solid state by a single-crystal X-ray structure analysis. Interesting photophysial properties emerged from the UV/Vis spectra acquired for 7 and the dimer Os complexes meso -Δ,Λ/Λ,Δ-[Os 2 (bpy) 4 (dppbd)](PF 6 ) 4 ( 10 ) and rac -Δ,Δ/Λ,Λ-[Os 2 (bpy) 4 (dppbd)](PF 6 ) 4 ( 11 ). |
