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X-Ray Identification and Characterization of Azobenzene Palladacycles Obtained by Solid- State C–H Bond Activation


Bjelopetrović, Alen; Lukin, Stipe; Halasz, Ivan; Užarević, Krunoslav; Đilović, Ivica; Barišić, Dajana; Budimir, Ana; Juribašić- Kulcsar, Marina; Ćurić, Manda
X-Ray Identification and Characterization of Azobenzene Palladacycles Obtained by Solid- State C–H Bond Activation // CSCM26 Book of abstacts
Poreč, Hrvatska, 2018. str. 46-46 (predavanje, međunarodna recenzija, sažetak, znanstveni)


Naslov
X-Ray Identification and Characterization of Azobenzene Palladacycles Obtained by Solid- State C–H Bond Activation

Autori
Bjelopetrović, Alen ; Lukin, Stipe ; Halasz, Ivan ; Užarević, Krunoslav ; Đilović, Ivica ; Barišić, Dajana ; Budimir, Ana ; Juribašić- Kulcsar, Marina ; Ćurić, Manda

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
CSCM26 Book of abstacts / - , 2018, 46-46

Skup
26th- Croatian-Slovenian Crystallographic Meeting

Mjesto i datum
Poreč, Hrvatska, 13.-17.06.2018

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
X-Ray analysis, palladium, organometals, C-H bond activation, mechanism

Sažetak
Cyclopalladated complexes or palladacycles are successfully applied in many areas of material science and biological chemistry. Their preparation is usually performed in solution but number of reports on the solid-state synthesis of these organometallic complexes is steadily growing. Recently, our group reported a successful solid-state synthesis of azobenzene palladacycles in a ball mill that was followed by a detailed mechanistic study of C–H bond activation in azobenzene by various palladium (Pd) precursors, i.e. polymeric PdCl2, monomeric [PdCl2(MeCN)2], trimeric [Pd(OAc)2]3 and ionic [Pd(MeCN)4][BF4]2. Herein we report on X-ray diffraction identification and characterization of palladacycles obtained by C–H bond activation in 4-chloro-4’-(N, N- dimethylamino)azobenzene by various Pd(II) precursors in a ball mill (Figure 1). Each type of the employed Pd(II) precursor afforded a structurally different mono- and/or dipalladated complex. Structural analysis shows that all monopalladated products have a palladated p-(N, N-dimethylamino)phenyl ring, which agrees with a regioselective solid- state reaction. Reactions with acetate and chloride Pd(II) precursors afford dimeric and monomeric dicyclopalladated complexes, respectively. Obtained results show a strong influence of the ancillary ligands on the molecular structure of the analyzed palladacycles and support the proposed mechanistic scheme for double palladation of azobenzenes in a ball mill by various Pd(II) precursors.

Izvorni jezik
Engleski

Znanstvena područja
Kemija



POVEZANOST RADA


Projekt / tema
HRZZ-IP-2014-09-7984 - Zelena sinteza organopaladijevih foto-osjetljivih spojeva

Ustanove
Farmaceutsko-biokemijski fakultet, Zagreb,
Institut "Ruđer Bošković", Zagreb,
Prirodoslovno-matematički fakultet, Zagreb