Synthesis, Structure, and Magnetic Study of two Two-Dimensional 63 Honeycomb-Shaped and 44 Grid-Like Coordination Polymetic Networks Based on Hexa- and Dodecanuclear Manganese Cluster Units

Two 2D coordination polymetic networks compounds of [Na3Mn6III(mu(6)-O)(thme)(4)(PhCO2)(6)(H2O)]center dot OH (1) and [(NaMn4Mn8O2)-Mn-III-O-II(thme)(4)(N-3)(OAc)(8)(AcOH)(2)(CH3O)(4)] (2) with 1,1,1-tris(hydroxymethyl)-methane (H(3)thme) as the ligand have been synthesized and structurally characterized by X-ray diffraction, IR spectra, and elemental analyses, where the homovalence hexanuclear Mn cluster in compound I and the mixed-valence dodecanuclear Mn cluster in compound 2 acted respectively as network nodes in the formation of honeycomb-shaped and rhombic grid-like layer structures. In addition, magnetic studies of I reveal that antiferromagnetically coupled paramagnetic cluster behavior is operative within the hexameric Mn-6 cluster and 2 exhibits antiferromagnetic coupling interactions and interesting frequency dependent in-phase as well as out-of-phase susceptibility signals are observed, respectively.