New mononuclear oxalate complexes of copper(II) with 2D and 3D architectures: Synthesis, crystal structures and spectroscopic characterization (CROSBI ID 157797)
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Androš, Lidija ; Jurić, Marijana ; Planinić, Pavica ; Žilić, Dijana ; Rakvin, Boris ; Molčanov, Krešimir
engleski
New mononuclear oxalate complexes of copper(II) with 2D and 3D architectures: Synthesis, crystal structures and spectroscopic characterization
Two mononuclear oxalate copper(II) complexes [Cu(bpy)(C2O4)(H2O)]•H2O (1) and [Cu(bpy)(C2O4)(H2O)]•H2C2O4 (2) (bpy = 2, 2'-bipyridine) have been synthesized and characterized by elemental and TG/DTA analyses, IR, UV/Vis and EPR spectroscopy and by a single-crystal X-ray diffraction study. Both compounds possess the neutral mononuclear [Cu(bpy)(C2O4)(H2O)] entity wherein the copper(II) atom exhibits a square-pyramidal coordination involving two oxygen and two nitrogen atoms from the bidentate oxalate and 2, 2'-bipyridine ligands, respectively, in the basal plane and one oxygen atom from the coordinate water molecule in the fifth, apical position. Compound 1 crystallizes with one water molecule in the monoclinic P2_1/c space group and compound 2 in the triclinic P-1 space group and involves one uncoordinated oxalic acid molecule. Their crystal structures are dominated by the hydrogen bonding and π–π stacking interactions that give rise to the overall 3D and 2D architectures for 1 and 2, respectively.
copper(II) complex ; 2 ; 2'-bipyridine ; bidentate oxalate ligand ; crystal structure ; hydrogen-bonding and π–π interactions ; IR ; UV/Vis and EPR spectroscopy
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