LAUSR

Abstract A new 3D heterometallic coordination polymer (HCP), which formulated as {[Ca(H2O)2][LCo]·DMSO·2H2O}n (1) (DMSO = dimethyl sulfoxide), has been solvothermally synthesized from metalloligand LCo = [Co(2,4-pydca)2]2– (2,4-pydca = pyridine-2,4-dicarboxylate) and alkaline-earth ion CaII. HCP 1 has been well characterized by Fourier-transform infrared spectroscopy, elemental analysis and single-crystal X-ray diffraction analysis. The crystallographic analysis indicates that HCP 1 crystallizes in the monoclinic system with space group of C2 and possesses the 3D framework structure, which is constructed from metalloligands LCo connecting with CaII ions via the carboxyl groups. The 3D framework of HCP 1 can be defined as (4,4,4)-connected 3-nodal topology with the point symbol of {42·84}{42·84}{42·84}. Thermogravimetric analysis exhibits that the skeleton of HCP 1 collapses after 375 °C. Magnetic susceptibility study reveals the presence of antiferromagnetic interaction between the spin centers. The solid-state luminescence property of HCP 1 has also been investigated.