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Two novel complexes, namely [Cu2(L)2] (1) and [Ni4(L)4] (2, H2L = 1-{3-[(5-bromo-2-hydroxy-benzylidene)-amino]-2-hydroxyphenyl}-ethanone) were synthesized through solvothermal methods at the same condition. The complexes 1 and 2 were characterized by IR spectroscopy, elemental analysis and single-crystal X-ray diffraction. 1 is dinuclear copper complex while 2 is a cubane nickel cluster. The L ligand displays two different coordination modes. One is the μ1-L-κ3N1:O1:N2 coordination mode and the other is μ3-L-κ6O1:O2:O2:O2:N1:O3 coordination mode. Magnetic studies reveal that the complex 2 displays dominant antiferromagnetic intracluster interactions between the NiII ions through the μ3 oxide bridges with g = 2.29, J = − 0.939 cm−1, and zJ′ = − 0.333 cm−1. Hirshfeld surface analysis revealed that H···H interaction was the dominant intermolecular interaction. [ABSTRACT FROM AUTHOR]

A new ionic pentanuclear FeIII cluster, namely, triethylazanium tetrakis(μ2‐5‐amino‐1,2,3,4‐tetrazolido)tetrakis(μ3‐4‐chloro‐2‐{[(1H‐tetrazol‐1‐id‐5‐yl)imino]methyl}phenolato)di‐μ3‐oxido‐pentairon(III) acetonitrile monosolvate monohydrate, (C6H16N)[Fe5(C8H4ClN5O)4(CH2N5)4O2]·CH3CN·H2O, was synthesized using microvial synthesis methods and characterized by elemental analysis, FT–IR spectroscopy, single‐crystal X‐ray diffraction and thermogravimetric analysis. Magnetic studies reveal that the complex displays dominant antiferromagnetic intracluster interactions between the FeIII ions through the μ3‐oxide bridges. [ABSTRACT FROM AUTHOR]