A Heterobimetallic Anionic 3,6-Connected 2D Coordination Polymer Based on Nitranilate as Ligand

In order to synthesize new coordination polymers with original architectures and interesting magnetic properties, we used the nitranilate ligand (C(6)O(4)(NO(2))(2)(2−) = C(6)N(2)O(8)(2−)), derived from the dianionic ligand dhbq(2−) (2,5-dihydroxy-1,4-benzoquinone = H(2)C(6)O(4)(2−)). The use of this bis-bidentate bridging ligand led to [(DAMS)(2){FeNa(C(6)N(2)O(8))(3)}·CH(3)CN](n) (1) (DAMS(+) = C(16)H(17)N(2)(+) = 4-[4-(dimethylamino)-α-styryl]-1-methylpyridinium), a 2D heterometallic coordination polymer presenting an unprecedented structure for any anilato-based compound. This structural type is a 3,6-connected 2D coordination polymer derived from the well-known honeycomb hexagonal structure, where Fe(III) ions alternate with Na(+) dimers (as Na(2)O(12) units) in the vertices of the hexagons and with an additional [Fe(C(6)N(2)O(8))(3)](3−) anion located in the center of the hexagons connecting the three Na(+) dimers. The magnetic properties of compound 1 show the presence of paramagnetic isolated high spin Fe(III) complexes with a zero field splitting, |D| = 8.5 cm(−1).