Phosphido-Bridged Di- and Trinuclear Palladium Complexes from Electron-Poor Phosphanes R2PH (R = C2F5, C6F5, (CF3)(2)C6H3)

Bader J, Neumann B, Stammler H-G, Hoge B (2019)
European Journal of Inorganic Chemistry 2019(35): 3904-3912.

Zeitschriftenaufsatz | Veröffentlicht| Englisch
 
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Abstract / Bemerkung
Electron-withdrawing substituents R in complexes [L-n M(PR2)] influence the P-M bond length due to a decreased sigma-donation and enhanced pi-back-bonding, leading to an increased Lewis acidity of the metal ion and therefore strengthening the M-L bond to electron-rich ligands L. This influences the Lewis acidity and the redox behavior of corresponding transition-metal complexes, which is important for the design of optimized catalytic systems. To investigate this effect, the electron-poor phosphanes R2PH with R = C2F5, C6F5, 2,4-(CF3)(2)C6H3 were treated with Pd(F(6)acac)(2) (F(6)acac = hexafluoroacetylacetonato) and Pd(acac)(2) (acac = acetylacetonato). While the reaction of the phosphanes with Pd(F(6)acac)(2) in all cases yielded the corresponding phosphido-bridged dinuclear palladium complexes [{(F(6)acac)Pd[mu-(PR2)]}(2)], the compounds obtained in the reaction with Pd(acac)(2) were structurally more diverse. For R = C2F5, the dinuclear palladium complex [{(acac)Pd{mu-[P(C2F5)(2)]}}(2)] was obtained, while the reaction with (C6F5)(2)PH yielded a trinuclear palladium complex bridged by four phosphido units. All complexes were fully characterized, including X-ray crystallography.
Stichworte
Palladium; Bridging ligands; Fluorinated ligands; Structure elucidation; Synthesis design
Erscheinungsjahr
2019
Zeitschriftentitel
European Journal of Inorganic Chemistry
Band
2019
Ausgabe
35
Seite(n)
3904-3912
ISSN
1434-1948
eISSN
1099-0682
Page URI
https://pub.uni-bielefeld.de/record/2937733

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Bader J, Neumann B, Stammler H-G, Hoge B. Phosphido-Bridged Di- and Trinuclear Palladium Complexes from Electron-Poor Phosphanes R2PH (R = C2F5, C6F5, (CF3)(2)C6H3). European Journal of Inorganic Chemistry. 2019;2019(35):3904-3912.
Bader, J., Neumann, B., Stammler, H. - G., & Hoge, B. (2019). Phosphido-Bridged Di- and Trinuclear Palladium Complexes from Electron-Poor Phosphanes R2PH (R = C2F5, C6F5, (CF3)(2)C6H3). European Journal of Inorganic Chemistry, 2019(35), 3904-3912. doi:10.1002/ejic.201900728
Bader, J., Neumann, B., Stammler, H. - G., and Hoge, B. (2019). Phosphido-Bridged Di- and Trinuclear Palladium Complexes from Electron-Poor Phosphanes R2PH (R = C2F5, C6F5, (CF3)(2)C6H3). European Journal of Inorganic Chemistry 2019, 3904-3912.
Bader, J., et al., 2019. Phosphido-Bridged Di- and Trinuclear Palladium Complexes from Electron-Poor Phosphanes R2PH (R = C2F5, C6F5, (CF3)(2)C6H3). European Journal of Inorganic Chemistry, 2019(35), p 3904-3912.
J. Bader, et al., “Phosphido-Bridged Di- and Trinuclear Palladium Complexes from Electron-Poor Phosphanes R2PH (R = C2F5, C6F5, (CF3)(2)C6H3)”, European Journal of Inorganic Chemistry, vol. 2019, 2019, pp. 3904-3912.
Bader, J., Neumann, B., Stammler, H.-G., Hoge, B.: Phosphido-Bridged Di- and Trinuclear Palladium Complexes from Electron-Poor Phosphanes R2PH (R = C2F5, C6F5, (CF3)(2)C6H3). European Journal of Inorganic Chemistry. 2019, 3904-3912 (2019).
Bader, Julia, Neumann, Beate, Stammler, Hans-Georg, and Hoge, Berthold. “Phosphido-Bridged Di- and Trinuclear Palladium Complexes from Electron-Poor Phosphanes R2PH (R = C2F5, C6F5, (CF3)(2)C6H3)”. European Journal of Inorganic Chemistry 2019.35 (2019): 3904-3912.