Hydrothermal synthesis, structure and properties of a new phosphomolybdate based on novel [Co(H₂O)₄(HP₂Mo₅O₂₃)]^8- anions and [H₈(H₂O)₁₆]⁸⁺ water cluster cations

Abstract

A pure inorganic {P₂Mo₅O₂₃}^6– based cobalt complex [H₈(H₂O)₁₆][Co(H₂O)₄(HP₂Mo₅O₂₃)₂] with a sandglass-like shape was synthesized and characterized by means of single-crystal X-ray diffraction, powder X-ray diffraction(PXRD), infrared spectroscopy(IR), thermogravimetry/differential scanning calorimetry(TG/DSC), ultraviolet- visible spectroscopy(UV-Vis) and cyclic voltammogram(CV). Single-crystal X-ray diffraction analysis reveals that the asymmetric unit of compound 1 consists of a half cobalt ion, one {P₂Mo₅O₂₃}^6– anion, two coordinated water molecules and eight lattice water molecules. It is especially intriguing to note that two {P₂Mo₅O₂₃}^6– clusters are symmetrical about the Co ion, like a sandglass. And a chair-like water cluster with an unprecedented centrosymmetric [H₈(H₂O)₁₆]⁸⁺ can be observed in compound 1. Additionally, the electrochemical and catalytic properties of compound 1 were also investigated.

Keywords

Hydrothermal synthesis / Phosphomolybdate / Crystal structure / Water cluster

References

[1] Mizuno N., Kamata K. Coord. Chem. Rev., 2011, 255(19/20): 2358.

[2] Miao H., Wan H. X., Liu M., Zhang Y., Xu X., Ju W. W., Zhu D. R., Xu Y. J. Mater. Chem. C, 2014, 2(32): 6554.

[3] Ibrahim M., Lan Y. H., Bassil B. S., Xiang Y. X., Suchopar A., Powell A. K., Kortz U. Angew. Chem. Int. Ed., 2011, 50(20): 4708.

[4] Qin C., Wang X. L., Yuan L., Wang E. B. Cryst. Growth Des., 2008, 8(7): 2093.

[5] Lu Y., Li Y. G., Wang E. B., Lü J., Xu L., Clérac R. Eur. J. Inorg. Chem., 2005, 1239.

[6] Li Z. L., Wang Y., Zhang L. C., Wang J. P., You W. S., Zhu Z. M. Dalton Trans., 2014, 43(15): 5840.

[7] Hu G. H., Dong Y. Y., He X. X., Miao H., Zhou S., Xu Y. Inorg. Chem. Commun., 2015, 60: 33.

[8] Jeffrey G. A., Saenger W. Hydrogen Bonding in Biological Structures, 1991, Berlin: Springer-Verlag.

[9] Kreuer K. D., Paddison S. J., Spohr E., Schuster M. Chem. Rev., 2004, 104(10): 4637.

[10] Wayne R. P. Chemistry of Atomspheres, 1991, New York: Oxford University Press.

[11] Kumar R., Christie R. A., Jordan K. D. J. Phys. Chem. B, 2009, 113(13): 4111.

[12] Douberly G. E., Walters R. S., Cui J., Jordan K. D., Duncan M. A. J. Phys. Chem. A, 2010, 114(13): 4570.

[13] Park M., Shin I., Singh N. J., Kim K. S. J. Phys. Chem. A, 2007, 111(42): 10692.

[14] Vendrell O., Gatti F., Meyer H. Angew. Chem. Int. Ed., 2007, 46(36): 6918.

[15] Wei M. L., He C., Hua W. J., Duan C. Y., Li S. H., Meng Q. J. J. Am. Chem. Soc., 2006, 128(41): 13318.

[16] Sheldrick G. M. SHELXS97, 1997, Göttingen: University of Göttingen.

[17] Sheldrick G. M. SHELXL97, 1997, Göttingen: University of Göttingen.

[18] Donnay G., Allmann R. Am. Mineral., 1970, 55: 1003.

[19] Xu X., Yan D. W., Fan X. R., Xu Y. J. Coord. Chem., 2012, 65(20): 3674.

[20] Arumuganathan T., Das S. K. Inorg. Chem., 2009, 48(2): 496.

[21] Wang C. L., Zhang Z. B., Fu J., Xu Y., Zhu D. R. Chem. Eur. J., 2012, 18(38): 11909.

[22] Niu J. Y., Ma J. C., Zhao J. W., Ma P. T., Wang J. P. Inorg. Chem. Commun., 2011, 14: 474.

[23] Tian A. X., Ying J., Peng J., Sha J. Q., Su Z. M., Pang H. J., Zhang P. P., Chen Y., Zhu M., Shen Y. Cryst. Growth Des., 2010, 10(3): 1104.

[24] Wang X. L., Qin C., Wang E. B., Su Z. M., Li Y. G., Xu L. Angew. Chem. Int. Ed., 2006, 45(44): 7411.

[25] Wang X. L., Bi Y. F., Chen B. K., Lin H. Y., Liu G. C. Inorg. Chem., 2008, 47(7): 2242.

[26] Jin H. J., Zhou B. B., Yu Y., Zhao Z. F., Su Z. H. Cryst. Eng. Comm., 2011, 13(2): 585.

[27] Miao H., Xu X., Ju W. W., Wan H. X., Zhang Y., Zhu D. R., Xu Y. Inorg. Chem., 2014, 53(6): 2757.

[28] Shen L., Leng Y., Wang J., Ren X. Q., Wu Y. J., Zhang M. J., Xu Y. Chin. J. Catal., 2010, 31(2): 156.