Synthesis, characterization, and magnetic properties of heterometallic trinuclear complex with Sb(III) and Ho(III)

A new ethylenediamine-N,N,N′,N′-tetraacetate (edta)-linked heterometallic holmium–antimony compound 1 with the formula [Sb2(edta)2Ho(H2O)4]NO3·3.6H2O has been synthesized and characterized by elemental analyses (EA), X-ray crystallography, X-ray powder diffraction patterns (PXRDs), Fourier transform infrared spectroscopy (FT-IR), and thermogravimetric analyses (TGA). X-ray crystal structure analysis reveals that the bridging carboxylate-O, O′ groups of edta, connect with Ho(III) and Sb(III) ions to form a 2D heterometallic network in compound 1. The 2D networks are further linked by bridging the carboxylate groups from the adjacent layers, resulting in the 3D coordination polymer. The thermal stability and the thermal decomposition process of this crystalline material have also been investigated by TGA–DSC. In addition, the magnetic properties of compound 1 have been studied.