RESEARCH ARTICLE

 

Preparation, structure characterization and thermal decomposition process of the dysprosium(III) m-methylbenzoate 1,10-phenanthroline complex

 

 

Su-Ling Xu^I,II; Jian-Jun Zhang^{I, *}; Ning Ren^III; Hai-Yan Zhang^I,IV; Rui-Fen Wang^IV; Shu-Ping Wang^IV

^IExperimental Center, Hebei Normal University, Shijiazhuang, 050016, People's Republic of China.
IIDepartment of Engineering, Shijiazhuang Foreign Economy and Trade Vocational College, Shijiazhuang, 050061, People's Republic of China
^IIIDepartment of Chemistry, Handan College, Handan, 056005, People's Republic of China
^IVCollege of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, 050016, People's Republic of China

 

 

---

ABSTRACT

A dinuclear complex [Dy(m-MBA)₃phen]₂-H₂O was prepared by the reaction of DyCl₃-6H₂O, m-methylbenzoic acid and 1,10-phenanthroline in a 1:3:1 molar ratio, where m-MBA = m-methylbenzoate and phen = 1,10-phenanthroline. The complex was structurally characterized by single crystal X-ray diffraction, elemental analysis, UV and IR spectroscopy, molar conductance and TG-DTG techniques. It crystallizes in the monoclinic space group C_c with a =15.962(16), b = 18.505(18), c = 22.547(2) Ǻ; a = 90 °, β = 97.9820(10) °, y = 90°; z = 4. The unit cell contains a dinuclear molecule of the title compound. Each Dy(III) ion is eight-coordinated to one 1,10-phenanthroline molecule, one bidentate carboxylate group and four bridging carboxylate groups. The carboxylate groups are bonded to the dysprosium ions in two modes: chelating bidentate and bridging bidentate. The thermal decomposition process of [Dy(m-MBA)₃phen]₂-H₂O has been followed by thermal analysis.

Keywords: m-Methylbenzoic acid, 1,10-phenanthroline, dysprosium complex, crystal structure, thermal analysis

---

 

 

Full text available only in pdf format.

 

Acknowledgements

This project was supported by the National Natural Science Foundation of China (No. 20773034), the Natural Science Foundation of Hebei Province (No. B2007000237), Hebei Science and Technology Department (No. 07215120), Hebei Normal University (No. L2006Z06, No. L2005Y12) and Handan College (No. 2006004).

 

References

1 C.F. Meares and T.G. Wensel, Acc. Chem. Res., 1984,17, 202-209.         [ Links ]

2 B. Czajka, B. Bocian and W. Ferenc, J. Therm. Anal. Cal., 2002, 67, 631-642.         [ Links ]

3 A.W.H. Lam, W.T. Wang, S. Gao, G.H. Wen and X.X. Zhang, Eur. J. Inorg. Chem., 2003, 149-163.         [ Links ]

4 Y. Zhang, L.P. Jin andS.Z. Lu, Chin. J. Inorg. Chem., 1997,13,280-288.         [ Links ]

5 R.F. Wang, L.S. Li, L.P. Jin and S.Z. Lu, J. Rare Earths, 1998,16,149-152.         [ Links ]

6 L.P. Jin, M. Z. Wang, G.L. Cai, S.X. Liu, J.L. Huang and R.F. Wang, Sci. China, 1995, 38(1), 1-9.         [ Links ]

7 R.F. Wang, S.P. Wang, S.K. Shi and J.J. Zhang, Chin. J. Struct. Chem., 2004, 23, 1300-1304.         [ Links ]

8 S.L. Xu, J.J. Zhang, H.F. Yang, N. Ren and H.Y. Zhang, Z. Naturforsch., 2007, 62b, 51-54.         [ Links ]

9 X. Li, G.F. Ren, M.Y. Liu and B.H. Song, Spectrosc. Spectral Anal, 2004, 24, 1410-1411.         [ Links ]

10 Z.G. Song and J.H. Peng, J. Northwest Normal Univ., 1998, 34, 41-44.         [ Links ]

11 J.J. Zhang, N. Ren, Y.X. Wang, S.L. Xu, R.F. Wang and S.P. Wang, J. Braz. Chem. Soc., 2006,17, 1355-1359.         [ Links ]

12 N. Ren, J.J. Zhang, R.F. Wang and S.P. Wang, J. Chin. Chem. Soc., 2006, 53, 293-298.         [ Links ]

13 J.J. Zhang, N. Ren, J.H. Bai and S.L. Xu, Int. J. Chem. Kinet, 2007, 39, 67-74.         [ Links ]

14 N. Ren, J.J. Zhang, C.Y. Zhang, S.L. Xu, H.Y. Zhang and L. Tian, Chin. J. Inorg. Chem., 2007, 23, 1078-1084.         [ Links ]

15 J.J. Zhang, S.L. Xu, N. Ren and H.Y. Zhang, Russ. J. Coord. Chem., 2007, 33, 611-615.         [ Links ]

16 R.F. Wang, S.P. Wang, S.K. Shi and J.J. Zhang, J. Coord. Chem., 2002,55, 215-223.         [ Links ]

17 L.P. Jin, R.F. Wang, M.Z. Wang, G.L. Cai, S.X. Liu and J.L. Huang, Chem. J. Chin. Univ., 1993,14, 1195-1200.         [ Links ]

18 G.Z. Bai, G.D. Chen, Z.M. Wang, L. Yuan, Z.W. Kang and J.Z. Gao, J. Inorg. Chem. (in Chinese), 1988,4, 32-41.         [ Links ]

19 B.L. An, M.L. Gong, M.X. Li and J.M. Zhang, J. Mol. Struct., 2004, 687, 1-6.         [ Links ]

20 G.M. Sheldrick, SHELXS-97, a Program for the Solution of Crystal Structures, University of Göttingen, Germany, 1997.         [ Links ]

21 G.M. Sheldrick, SHELXL-97, a Program for the Refinement of Crystal Structures, University of Göttingen, Germany, 1997.         [ Links ]

 

 

Received 29 September 2006
Revised 11 November 2007
Accepted 14 November 2007

 

 

* To whom correspondence should be addressed. E-mail: jjzhang6@126.com