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A Novel Synthesis Path to Luminescent Dimeric Dysprosium Complex Controlled by the Hydrolysis of Methyl Nicotinate

Y. S. Song, B. Yan, and Z. X. Chen

Department of Chemistry, Tongji University, Shanghai 200092, P. R. China

 

E-mail: byan@tongji.edu.cn

Received: 9 June 2004

Abstract: A novel path to synthesize lanthanide complex of aromatic carboxyl group controlled by the hydrolysis of the corresponding ester of aromatic carboxylic acid has been found. According to this path, we achieved a dimeric dysprosium coordination compound of nicotinate (NIC) using methyl nicotinate as the starting ligand. With the hydrolysis of sodium hydroxide, a dimeric dysprosium complex forms slowly: [Dy(NIC) 3 (H 2 O) 2 ] 2 has been synthesized. X-Ray analysis reveals that it forms a novel dimeric structure through bridged oxygen atoms of carboxylate groups. The title complex crystallizes in the monoclinic system, space group P 2 1 / c , with lattice parameters a = 9.575(2) °A , b = 11.600(2) °A , c = 17.758(5) °A , β = 91.565(4) , V = 1971.6(7) °A 3 , D c = 1.903 Mg/m 3 , Z = 2, F (000) = 1100, GOF = 1.144, R 1 = 0.0337. The title complex exhibits strong luminescence of Dy 3+.

Full paper in Portable Document Format: 594a256.pdf

 

Chemical Papers 59 (4) 256–260 (2005)

Monday, June 14, 2021

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