Abstract
The crystal structure of 1-(4-methylphenyl)-3-(2-(trifluoromethyl)phenyl)triaz-1-ene 1-oxide (L) is monoclinic and has a space group of P21/c with a = 8.066(2) Å, b = 16.740(5) Å, c = 11.730(4) Å, β = 117.76(3)° and Z = 4. In this study, direct procedures were used to solve the crystalline structure of this complex and refine it by full-matrix least-squares to ultimate values of R1 = 0.0610 and wR2 = 0.1661 with 1474 reflections (I > 2σ(I)). The molecule is included in inter-hydrogen bonding with C5–H5 acting as donors and O atoms of N-oxide groups as acceptors (O1······H5) with a distance of 2.638 Å. These results were also confirmed by theoretical studies. The spectrophotometric titrations of the synthesized L with metal ions showed a substantially greater stability constant for its nickel ion complex with a mole ratio equal to 1. Consequently, the ligand was used for the selective extraction and spectrophotometric determining the Ni2+ ion in natural water. Under optimized conditions, the calibrating curve was linear over a nickel concentration range of 9.2 × 10−7–8.4 × 10−3 M. The detecting limit of this method was 6.0 × 10−7 M Ni2+. No considerable interference was found from at least 100 times concentrations of a number of possibly interfering ions.
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Acknowledgement
It is my pleasure to express thanks to the Research Council of Lorestan University for their support with the completion of this research study. I wish to thank Prof. Datong Song from the University of Toronto, Chemistry Department, for his assistance and support. I would also like to thank Pascal Retailleau, Service de Cristallochimie, Cedex, France, for allowing the use of their X-ray facilities.
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Rezaei, B., Fazlollahi, M. Synthesis, crystal structure, theoretical study and application of 1-(4-methylphenyl)-3-(2- (trifluoromethyl)phenyl)triaz-1-ene 1-oxide in the extraction of Ni ions. J IRAN CHEM SOC 18, 1581–1590 (2021). https://doi.org/10.1007/s13738-020-02132-5
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DOI: https://doi.org/10.1007/s13738-020-02132-5