Alkaline-earth metal phosphonocarboxylates: synthesis, structures, chirality, and luminescence properties

作者：Zima Vitezslav^*; Raja Duraisamy Senthil; Lee Yu Shan; Chang Ting Guang; Wu Cheng You; Hu Chien Chieh; Lee Kueir Rarn; Lai Juin Yih; Yeh Jui Ming; Lin Chia Her

来源：Dalton Transactions, 2013, 42(43): 15332-15342.

DOI：10.1039/c3dt51375k

Six new alkaline-earth metal carboxyphosphonates [Mg(H2O)(H(2)PMIDA)](1), [Sr(H2O)(H(2)PMIDA)] (2), [Sr-2(H2O)(PMIDA)] (3), [Sr-2(HPO4)(H(2)PMIDA)] (4), [Ba-2(HPO4)(H(2)PMIDA)] (5), and [Ba-2(H2O)(H(2)PMIDA)(2)] (6) (H(4)PMIDA = N-(phosphonomethyl)iminodiacetic acid) have been synthesized solvothermally in order to study the coordination behavior of H(4)PMIDA towards alkaline-earth metal ions (Mg2+, Sr2+, and Ba2+) and the structural features of the resulting polymeric compounds. The newly synthesized compounds have been characterized by elemental analysis, UV-Vis spectrometry, IR spectroscopy, thermogravimetry analysis, solid state P-31 MAS NMR, powder X-ray diffraction analysis and single crystal X-ray diffraction techniques. The single crystal structure analysis revealed structural variability of the prepared compounds. Compounds 1, 2, 4 and 5 are three-dimensional with the H(2)PMIDA skeletons connecting the inorganic parts to each other, whereas compound 3 has a layered structure. Compounds 2, 4 and 5 contain helical structural motifs. In addition, the extrinsic luminescent properties of Eu(III)- and Tb(III)-doped compounds 1, 4 and 5 have also been studied.

• 出版日期2013