1. A blue luminescent binuclear cadmium-orotate coordination polymer: synthesis, crystal structure, and thermogravimetric analysis.
- Author
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Bharati, Ashok Kumar, Lama, Prem, Trojan–Piegza, Joanna, Bieńko, Alina, and Siddiqui, Kafeel Ahmad
- Subjects
OROTIC acid ,COORDINATION polymers ,SINGLE crystals ,HYDROGEN bonding ,LUMINESCENCE - Abstract
Assembly of orotic acid (H
3 Or, 1,2,3,6-tetrahydro-2,6-dioxo-4-pyrimidinecarboxylic) and Cd(NO3 )·6H2 O yielded a coordination polymer, [(Cd(Hor)·2.5H2 O)2 ]n (1), which has been characterized by X-ray single-crystal diffraction, TGA, and fluorescence spectra. Single-crystal X-ray structural analyses reveal that 1 is a hydrogen-bonded binuclear Cd-orotate coordination polymer in which both Cd2+ ions have different coordination environments with identical distorted octahedral geometry. Crystal data for 1: monoclinic, space group P21 /n, a = 7.0209(10) Å, b = 13.974(2) Å, c = 17.541(3) Å, β = 98.842(2)°, V = 1700.5(4) Å, Z = 4, R1 = 0.0269, wR2 = 0.0612, θmax = 25.960. The emission spectrum of the Cd-complex recorded with 265 nm excitation wavelength reveals the complex has strong blue luminescence with the peak maximum 420 nm (2.95 eV) as a result of the n–π* and π–π* transitions on the H3 Or ligand. [ABSTRACT FROM AUTHOR]- Published
- 2017
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