Abstract
Three new 3d-4f heteronuclear one and two dimensional coordination polymers (CPs), {[Cu(L12−)Nd(NO3)(µ-NO3)(H2O)2].NO3}n (1), [Cu(L22−)Nd(IN−)(NO3)2]n (2) and [Cu(L22−)Gd(IN)(NO3)2]n (3), have been synthesized and characterized by using FT-IR, elemental analysis, Hirshfeld surface analysis and single crystal X-ray diffraction study. Complex 1 represents the first example of a nitrate bridged Cu(II)-Nd(III) zigzag one dimensional chain, to the best of our knowledge. The X-ray crystal structure analysis reveals that complexes 2 and 3 are isomorphous two dimensional coordination polymers whose heterometallic dinuclear units of Cu-Nd in 2 and Cu-Gd in 3 are connected by the isonicotinate anion as a spacer. A magnetic study reveals that antiferromagnetic interactions exist between the Cu(II) and Nd(III) ions in 1 and 2, however ferromagnetic interactions exist between the Cu(II) and Gd(III) ions in 3.
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