| Summary: | The iron (II) coordination compound, {[Fe(3,6 pzdc)](H<sub>2</sub>O)<sub>2</sub>}<sub>2</sub>. (<b>1</b>) has been synthesized from a mixture of FeCl<sub>2</sub>.4H<sub>2</sub>O and pyridazinedicarboxylate (3,6 pzdc). The molecular structure of complex <b>1</b> was determined by single crystal X-ray diffraction study. It reveals that the dinuclear structure contains a pyridazine bridge in between the two metal centers. The variable temperature magnetic study results in g = 2.496(8), J = −2.50(8) cm<sup>−1</sup>, Ɵ = −0.1 K values, by fitting the magnetic data in a simple dinuclear Fe-Fe model which indicates that the major exchange pathway through the N-N bridge. Presence of dense H-bonding interaction leads to supramolecular network formation.
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