Dianilineglyoxime Salt and Its Binuclear Zn(II) and Mn(II) Complexes with 1,3-Benzenedicarboxylic Acid: Synthesis and Structures

Single crystals of dianilineglyoxime (DAnH 2 ) in the form of hydrate salts [DAnH 3 ](ClO 4 ) ∙ H 2 O ( I ) and [DAnH 3 ](ClO 4 ) ∙ 1.25H 2 O ( II ) are obtained. Three binuclear zinc(II) and manganese(II) compounds with dianilineglyoxime and 1,3-benzenedicarboxylic acid (1,3-Н 2 Bdc) are synthesized: [Zn 2 (DAnH 2 ) 2 (1,3-Bdc) 2 (DMF) 4 ] ∙ 2DMF ∙ MeOH · 1.5H 2 O ( III ), [Mn 2 (DAnH 2 ) 2 (1,3-Bdc) 2 (DMF) 4 ] ∙ 2DMF ( IV ), and {[Mn 2 (DAnH 2 ) 2 (1,3-Bdc) 2 (DMF) 2 (CH 3 OH) 2 ][Mn 2 (DAnH 2 ) 2 (1,3-Bdc) 2 (DMF) 4 ] ∙ 2CH 3 OH} ( V ). The compositions and structures of compounds I – V are confirmed by IR spectroscopy and X-ray diffraction analysis (CIF files CCDC nos. 1906360 ( I ), 1906362 ( II ), 1906361 ( III ), 1906363 ( IV ), and 1906364 ( V )). The X-ray diffraction data show that DAnH 2 coordinates to the metal ions via the bidentate chelate mode, whereas (1,3-Вdc) 2– coordinates to the metal ions via the bidentate bridging mode to form binuclear structures. As the most part of α-dioximes, one neutral DAnH 2 coordinates to each metal atom by two nitrogen atoms, whereas two (1,3-Вdc) 2– anions coordinate to the metal atom by one oxygen atom each. The coordination polyhedra of the metals in compounds III – V are built up by the oxygen atoms of DMF and CH 3 OH.