The first tridecanuclear nickel(II) cluster: [Ni13(OH)6(O2CMe)8(btaO)12(H2O)6(nPrOH)4] (btaOH=1-hydroxybenzotriazole)

New Magnetic Nickel(II)-Thiolate Cluster-Based Coordination Polymer Constructed from 2-Mercaptonicotinic Acid

“…This case has been documented by previous work , and indicates strong antiferromagnetic exchange coupling among the Ni 9 cluster . Upon decreasing the temperature, the χ M T value declines almost linearly to 3.63 cm 3 K mol –1 at 55 K, also indicative of the existence of a dominant antiferromagnetic exchange coupling. , The further decrease in temperature witnesses a slight increase of χ M T value to 3.74 cm 3 K mol –1 at 16 K, which may contribute to the presence of weak intramolecular ferromagnetic interaction , and spin frustration . Below 16 K, the χ M T value declines rapidly to 2.75 cm 3 K mol –1 at 2 K, suggesting the presence of intermolecular antiferromagnetic interactions.…”

“…35,36 The further decrease in temperature witnesses a slight increase of χ M T value to 3.74 cm 3 K mol −1 at 16 K, which may contribute to the presence of weak intramolecular ferromagnetic interaction 37,38 and spin frustration. 39 Below 16 K, the χ M T value declines rapidly to 2.75 cm 3 K mol −1 at 2 K, suggesting the presence of intermolecular antiferromagnetic interactions. Unfortunately, because of the complexity in molecular structure, it is unrealistic to fit the experimental magnetic data of this two-dimensional heteropolymetallic spin system using a suitable theoretical model.…”