4,5-Diazafluoren-9-one benzoylhydrazone monohydrate

Abstract

The title compound, C(18)H(12)N(4)O.H(2)O, adopts the keto tautomeric form and the azomethine C=N double bond is in the E configuration. The dihedral angle between the planes of the diazafluorene moiety and the phenyl ring is 11.3 (1) degrees. In the solid state, the molecules form infinite chain-like structures via O-H.N hydrogen bonds involving the water molecules and diazafluorene moieties.

Tricarbonyl Rhenium(I) and Technetium(I) Complexes with Hydrazones Derived from 4,5‐Diazafluoren‐9‐one and 1,10‐Phenanthroline‐5,6‐dione

“…The hydrazone groups in the complexes maintain their configuration Z and E around the C(1)-N(1) and N(1)-N(2) bonds, as was observed in the free ligands L 3 and L 4 . [14,15] On the other hand, with the exception of 1b, the N(1)-N(2) bonds are longer in the complexes than those in the free ligands, while the C(1)-N(1) and C(8)-N(2) bonds are almost unaffected by the coordination. Therefore, the hydrazone groups seem to be only slightly perturbed by the coordination of the {MX(CO) 3 } fragments.…”