Divalent metal complexes of formylhydrazine: Syntheses and crystal structures of M(CH4N2O)2(H2O)2·2NO3 (M = Zn, Co)

Krishnan Srinivasan, Subbaiah Govindarajan, William T.A. Harrison* (Corresponding Author)

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


The syntheses and crystal structures of Zn(CH4N2O)2(H2O)2·2(NO3) (1) and Co(CH4N2O)2(H2O)2·2(NO3) (2), the first well-characterised metal complexes of formylhydrazine (fh), are described. In both compounds, the fh acts as an N,O-bidentate ligand in a centrosymmetric [M(fh)2(H2O)2]2+ cation, with charge balance supplied by nitrate counter ions. The packing for the two compounds are quite different: in 1, chains of [Zn(fh)2(H2O)2]2+ units are seen in the triclinic unit cell, whereas in the monoclinic structure of 2, sheets of cations occur. This might arise because the conformations of the five-membered chelate rings for the ligands are slightly different, with that for 2 showing a greater degree of puckering.

Original languageEnglish
Pages (from-to)619-621
Number of pages3
JournalInorganic Chemistry Communications
Issue number7
Publication statusPublished - 1 Jul 2009


  • Crystal structure
  • Hydrogen bonding
  • Ligand

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