Structural systematics of some metal complexes with 4,5-diazafluoren-9-one

Abhijit Pal, Bhaskar Biswas, Merry Mitra, Chandra Shekhar Purohit, Chia Her Lin, Rajarshi Ghosh*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


Synthesis and X-ray structural characterization of three complexes of type cis-[M(dafone)2(NCS)2] (M = Co(II), 1; Ni(II), 2; Zn(II), 3; dafone = 4,5-diazafluoren-9-one) and a polymer cis-[Cd(dafone)(NCS) 2]n (4) have been reported. Each of the four complexes is crystallized in orthorhombic crystal system. Structural study reveals that each metal(II) centre in the four complexes adopts distorted octahedral geometry with MN6 chromophore in 1-3 and MN4S2 chromophore in 4. The room temperature steady-state fluorescent intensity of dafone in dimethyl formamide at 402 nm is found to be quenched in these reported dafone complexes (1-4).

Original languageEnglish
Pages (from-to)717-725
Number of pages9
JournalJournal of Chemical Sciences
Issue number3
Publication statusPublished - 2014 May
Externally publishedYes


  • Transition metal ions
  • crystal structure
  • fluorescence.
  • imine ligand

ASJC Scopus subject areas

  • General Chemistry


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