Hydrothermal Syntheses, Crystal Structure, and Magnetic Characterization of Two 3d-4f Heterometallic Coordination Polymers

作者:Wang, Ning; Yue, Shantang*; Liu, Yingliang; Yang, Haiyu; Wul, Hongyan
来源:Crystal Growth & Design, 2009, 9(1): 368-371.
DOI:10.1021/cg800575f

摘要

Two 3d-4f heterometallic coordination polymers, [(Gd2CuII)-Cu-III(pydC)(2)(CO3)(2)(H2O)(2)] center dot 2H(2)O (1, pydc = 2,5-pyridinedicarboxylate dianion) and [(Gd4COCoIII)-C-III-Co-II(mu(3)-OH)(3)(mu(3)-O)(pydC)(6)(H2O)(5)]center dot 8H(2)O (2) have been synthesized under hydrothermal conditions. In compound 1, 2D {[Gd-2(CO3)(2)](2 )}(n) sheets are connected by [Cu(pydc)(2)](2-) bridges, which give rise to the formation of a sandwich-like framework. Compound 2 exhibits a 3D framework constructed by Gd-4 clusters, CO2 subunits, and pydc spacers. The solid-state dc magnetic measurements reveal anti ferromagnetic behaviors of 1 and 2 in both compounds.