ABSTRACT
A new Ho(II) polymer [Ho(ctdc)]n 1 (H3ctdc = 5′-(4-Carboxyphenyl)-[1,1′:3′,1′′-terphenyl]-4,4′′-dicarboxylic acid) was synthesized under hydrothermal conditions. The compound crystallizes in the Monoclinic system, space groupP2(1)/c with a = 17.5782(4), b = 28.6807(5), c = 9.5889(2)Å, α = 90, β = 101.956(2), γ = 90°, V = 4729.44(16) Å3, Z = 4, Mr = 618.34, Dc = 0.868 Mg/m3, μ = 3.321 mm−1, F(000) = 1208, the final R = 0.0723 and wR = 0.2343 for 5974 observed reflections with I > 2σ(I). The compound presents a three-dimensional (3 D) network extended by both ctdc3− anions in which the ctdc3− anions employ a chelating coordination mode. From the topology point of view, the structure could be described as a 6-connected 3 D network with (46. 64) topology net. Infrared spectroscopy, elemental analyses, thermogravimetric analysis and powder X-ray diffraction properties of 1 are also investigated.
Acknowledgments
This work was supported by the Institutions of higher learning key scientific research project of Henan Province (18B150015) and the Natural Science Foundation of Henan Province (182102310863).