1. Xinxin Xu, Ying Ma, and Enbo Wang, J. Solid State Chem. 180(11), 3136 (2007).
2. B. Gomez-Lor, E. Gutierrez-Puebla, M. Iglesias, et al., Chem. Mater. 17(10), 2568 (2005).
3. SMART (Control) and SAINT (Integration) Software. Version 5.0 (Bruker, Madison, 1997).
4. G. M. Sheldrick, SADABS. Program for Scaling and Correction of Area Detector Data (Univ. of Göttingen, Göttingen, 1997).
5. G. M. Sheldrick, SHELXS-97. Program for the Solution of Crystal Structures (Univ. of Göttingen, Göttingen, 1997).