Abstract
Two new complexes, [M((H2O)(bpp)(Brip)]n (M = CoII (1) and NiII (2), bpp = 1,3-bi(4-pyridyl)propane, H2Brip = 5-bromoisophthalic acid), have been synthesized through hydrothermal reaction. They were characterized by elemental analysis, IR spectra, thermal analysis, magnetic properties, and X-ray single-crystal diffraction. The two complexes belong to monoclinic system, C2/c space group. The adjacent CoII or NiII ions are bridged by Brip to form an alternate 1D chain. Such 1D chains are further connected by bpp to generate a twofold interpenetrating diamondoid 3D network. Variable-temperature magnetic susceptibility measurements indicate the occurrence of weak ferromagnetic interactions between the CoII (1) and NiII (2) ions, respectively.
Acknowledgments
The authors gratefully acknowledge the support of the Natural Science Foundation of Henan Province Educational Committee (12B150019) and the Youth Foundation of Luoyang Normal University (2011-QNJJ-003).