RESUMEN
In the title compound, C6H4BrF3N4O2, the oxa-diazole ring is essentially planar with a maximum deviation of 0.003â (2)â Å. In the crystal, mol-ecular pairs are connected by N-Hâ¯N hydrogen bonds, forming dimers with an R 2 2(8) motif. The dimers are linked into layers parallel to the (10) plane by N-Hâ¯O hydrogen bonds. In addition, C-Oâ¯π and C-Brâ¯π inter-actions connect the mol-ecules, forming a three-dimensional network. The F atoms of the tri-fluoro-methyl group are disordered over two sites in a 0.515â (6): 0.485â (6) ratio. The inter-molecular inter-actions in the crystal structure were investigated and qu-anti-fied using Hirshfeld surface analysis.
RESUMEN
A simple and highly effective methodology for the cross-coupling of heteroaryl iodides with NN-AuPPh3 at room temperature is reported. The protocol is based on a novel catalytic system consisting of Pd2(dba)3·CHCl3 and the phosphine ligand MeCgPPh having an adamantane-like framework. The present protocol was found to be well compatible with various heteroaryl iodides, thus opening new horizons in directed synthesis of functionalized nitronyl nitroxides and high-spin molecules.
RESUMEN
The bicyclic imidazo[1,2-a]pyridine core in the mol-ecule of the title compound, C10H7F3N2O, is planar within 0.004â (1)â Å. In the crystal, the mol-ecules are linked by pairs of C-Hâ¯N and C-Hâ¯O hydrogen bonds, forming strips. These strips are connected by the Fâ¯F contacts into layers, which are further joined by π-π stacking inter-actions. The Hirshfeld surface analysis and fingerprint plots reveal that mol-ecular packing is governed by Fâ¯H/Hâ¯F (31.6%), Hâ¯H (16.8%), Câ¯H/Hâ¯C (13.8%) and Oâ¯H/Hâ¯O (8.5%) contacts.