diazafluorene

Noun

 * 1)  Any of several isomeric tricyclic aromatic heterocycles derived from fluorene by replacement of two CH groups by nitrogen atoms
 * Aldrichimica Acta Volume 30 No 4 (pdf) from Sigma-Aldrich
 * Another ligand delivery reagent this time for the introduction of the 1,8-diazafluorene ligand, has been developed using diazo chemistry.