Abstract
An organic–inorganic hybrid phosphotungstate-based CuII–LaIII heterometallic derivative [Cu(dap)2(H2O)][Cu(dap)2]4.5 [La(α-PW11O39)2].4H2O (1) (dap = 1,2-diaminopropane) has been prepared and characterized by elemental analysis, IR spectra, UV spectrum, optical diffuse reflectance spectrum, thermogravimetric analysis, and X-ray crystallography. Complex 1 exhibits a 2-D CuII–LaIII heterometallic sheet architecture with a 4-connected topology established by dimeric [Cu(dap)2(H2O)]2[Cu(dap)2]9[La(α-PW11O39)2]2 building units via [Cu(dap)2]2+ bridges. The optical diffuse reflectance spectrum indicates that 1 possesses the semiconductor characteristic. The thermogravimetric curve of 1 shows two steps of weight loss.
Acknowledgments
This work was supported by the Natural Science Foundation of China (21101055), China Postdoctoral Science Foundation Funded Project (201104392, 20100470996), the Natural Science Foundation of Henan Province (122300410106, 102300410093), the Foundation of State Key Laboratory of Structural Chemistry (20120013), 2012 Young Backbone Teachers Foundation from Henan Province, the Foundation of Education Department of Henan Province (2009A150003, 2010B150006), and the Students Innovative Pilot Plan of Henan University (2012).