ChemInform Abstract: Unusual Condensation of N-Phenylsemiquinonediimine Ligands Coordinated to the NiII Atom with an Acetone Molecule to Form a Heterocycle.A. V. Reshetnikov; A. A. Sidorov; S. S. Talismanov; G. G. Aleksandrov; Yu. A. Ustynyuk; S. E. Nefedov; I. L. Eremenko; I. I. Moiseev · 2001