2-D metalloporphyrin coordination network of cobalt-meso-tetra(4-carboxyphenyl)porphyrin

<div><p>A new metalloporphyrin coordination framework [Co(H₃TCPP)] (H₆TCPP = meso-tetra(4-carboxyphenyl)porphyrin) has been synthesized hydrothermally. Single-crystal X-ray analysis revealed it exhibits a 2-D layered coordination network structure. Hydrogen bonds are observed between carboxyl groups within the 2-D layer as well as from adjacent layers. The UV–Vis diffuse reflectance spectrum indicates the presence of the expected <i>B</i> (410 nm) and <i>Q</i> (540 and 690 nm) absorption bands. The fluorescence spectrum shows four emission bands centered at 648 nm.</p></div

Developing Bis(imino)acenaphthene-Supported <i>N</i>‑Heterocyclic Carbene Palladium Precatalysts for Direct Arylation of Azoles

On the basis of the strategy of developing highly efficient protocol for Pd-catalyzed cross-coupling reactions, a series of bulky bis­(imino)­acenaphthene (BIAN)-supported Pd-PEPPSI complexes were synthesized, characterized, and applied in direct arylation of azoles. The effect of backbone and <i>N</i>-moieties on NHCs was evaluated, and the reaction conditions were optimized. It was found that the bulky Pd-PEPPSI complexes could be successfully employed in cross-coupling of (hetero)­aryl bromides with azoles at a low palladium loading of 0.5–0.05 mol % under aerobic conditions, demonstrating the ease of manipulation without glovebox and handling of solvents