title: Alkaline-earth metal phosphonocarboxylates: synthesis, structures, chirality, and luminescence properties.
abstract: Six new alkaline-earth metal carboxyphosphonates [Mg(H2O)(H2PMIDA)] (1), [Sr(H2O)(H2PMIDA)] (2), [Sr2(H2O)(PMIDA)] (3), [Sr2(HPO4)(H2PMIDA)] (4), [Ba2(HPO4)(H2PMIDA)] (5), and [Ba2(H2O)(H2PMIDA)2] (6) (H4PMIDA = N-(phosphonomethyl)iminodiacetic acid) have been synthesized solvothermally in order to study the coordination behavior of H4PMIDA towards alkaline-earth metal ions (Mg(2+), Sr(2+), and Ba(2+)) 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 (31)P 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 H2PMIDA skeletons connecting the inorganic parts to each other, whereas compound 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.
authors.affiliation: Institute of Macromolecular Chemistry, AS CR, Heyrovsky sq. 2, 162 06 Prague 6, Czech Republic. Vitezslav.Zima@upce.cz.
authors.forename: Vítězslav
authors.initials: V
authors.lastname: Zima
authors.forename: Duraisamy Senthil
authors.initials: DS
authors.lastname: Raja
authors.forename: Yu-Shan
authors.initials: YS
authors.lastname: Lee
authors.forename: Ting-Guang
authors.initials: TG
authors.lastname: Chang
authors.forename: Cheng-You
authors.initials: CY
authors.lastname: Wu
authors.forename: Chien-Chieh
authors.initials: CC
authors.lastname: Hu
authors.forename: Kueir-Rarn
authors.initials: KR
authors.lastname: Lee
authors.forename: Juin-Yih
authors.initials: JY
authors.lastname: Lai
authors.forename: Jui-Ming
authors.initials: JM
authors.lastname: Yeh
authors.forename: Chia-Her
authors.initials: CH
authors.lastname: Lin