Synthesis, characterization, structure and dual room-temperature fluorescent and phosphorescent emission in μ-oxalato-bridged rhenium(I) metallacycle

Presented here is a new self-assembled m-oxalato-bridged dirhenium(I) metallacycle, namely, [Re2(CO)6(m-h4-C2O4)(m-4,4¢-tmdp)] (1, H2C2O4 = oxalic acid, 4,4¢-tmdp = 4,4¢-trimethylenedipyridine), which features the coexistence of two emissive pathways from an emissive 3p−p* and a 3MLCT state at room temperature.