Quinolino[7,8-h]quinoline: a 'just right' ligand for beryllium(ii) coordination

We report the synthesis and crystal structure of the first quinolino[7,8-h]quinoline beryllium(ii) complex of the general formula [BeL2(MeCN)Br]Br center dot MeCN, containing the ligand 4,9-dihydroxyquinolino[7,8-h]quinoline (L2). The Be(ii) cation is a great size match for the dinitrogen binding pocket of the quinolino[7,8-h]quinoline ligand as indicated by minimal out-of-plane displacement and ligand distortion parameters.

Automated summary

The synthesis and crystal structure of the first quinolino[7,8-h]quinoline beryllium(ii) complex was reported, with the ligand 4,9-dihydroxyquinolino[7,8-h]quinoline. The Be(ii) cation showed great size match for the ligand's dinitrogen binding pocket, with minimal out-of-plane displacement and ligand distortion parameters.