Luminescent agostic Cu(I) complexes containing both trigonal planar and tetrahedral coordination modes

A Gyroidal MOF with Unprecedented Interpenetrating utc-c Network Exhibiting Exceptional Thermal Stability and Ultrahigh CO2 Affinity

“…As shown in Figure S2, an IP-POH – ligand, acting as a “Y-shape” linker, connects three Cu + atoms. Interestingly, this coordination type was rarely reported in the structure based on IP derivative ligands . The Cu1 atom in tetrahedral geometry is surrounded by four nitrogen atoms from two chelated phenanthroline groups with a dihedral angle of 89.3(4)°, whereas two other cuprous atoms, Cu2 and Cu3, are linearly coordinated with two nitrogen atoms of different imidazole groups.…”

“…Interestingly, this coordination type was rarely reported in the structure based on IP derivative ligands. 41 The Cu1 atom in tetrahedral geometry is surrounded by four nitrogen atoms from two chelated phenanthroline groups with a dihedral angle of 89.3(4)°, whereas two other cuprous atoms, Cu2 and Cu3, are linearly coordinated with two nitrogen atoms of different imidazole groups. Notably, the Cu3 atom is not coplanar with the linking IP group (torsion angle of Cu3−N4−C13−N3 is 162.1(2)°), while the Cu2 atom and IP group are nearly horizontal (Figure S3).…”

Photophysical properties of homobimetallic Cu(i)–Cu(i) and heterobimetallic Cu(i)–Ag(i) complexes of 2-(6-bromo-2-pyridyl)-1H-imidazo[4,5-f][1,10]phenanthroline

“…Based on this consideration, 1H-imidazole [4,5-f] [1,10] phenanthroline (Imphen) and its derivatives (Imphens) have become frequently used a-diimine derivatives. 19,30,[38][39][40][41][42][43][44][45][46] Second, the introduction of substituents at the ortho positions of the a-diimine coordination sites is a good way to gain better emission, because it can increase the steric hindrance of the coordination sites and reduce the quenching of luminescence caused by the attack of solvent molecules, especially water molecules. 4,15,37,[47][48][49][50][51] For instance, a highly luminescent Cu(I) complex has been reported by introducing two methyl groups to the 6,6 0 -positions of 4,4 0dimethyl-2,2 0 -bipyridine (dmbpy).…”

“…37 Third, bulky diphosphine ligands with strong chelating ability and good rigidity such as 9,9-dimethyl-4,5-bis(diphenylphosphino)-9H-xanthene (xantphos) and bis[(2-diphenylphosphino)phenyl] ether (POP) are often adopted. [38][39][40][41][42][43][44] The strong binding ability of such soft Lewis bases can effectively prevent the dissociation of the Cu(I) complexes in the solutions. The bulkiness and good rigidity can significantly reduce the structural distortion of the Cu(I) complexes and therefore enhance their emission yields.…”

Various Structural Design Modifications: para-Substituted Diphenylphosphinopyridine Bridged Cu(I) Complexes in Organic Light-Emitting Diodes

“…The structural diversity of luminescent Cu­(I) complexes is enormous. Many examples have been already presented in the literature, ranging from polynuclear copper clusters, − over tetranuclear − and some trinuclear − structures to a variety of dinuclear ,− and mononuclear − complexes. Multinuclear copper complexes are of special interest because of their luminescence-enhancing cooperative effects in case the copper centers are in close proximity.…”