A Zn-based coordination polymer with good ability for selective detectionof mercury ions in solution
- سال انتشار: 1402
- محل انتشار: بیست و دومین کنفرانس شیمی معدنی ایران
- کد COI اختصاصی: IICC22_093
- زبان مقاله: انگلیسی
- تعداد مشاهده: 51
نویسندگان
Department of Chemistry, Faculty of Science, Shahid Chamran University of Ahvaz,۶۱۳۵۷۸۳۱۵۱ Ahvaz, Iran.
Department of Chemistry, Faculty of Science, Shahid Chamran University of Ahvaz,۶۱۳۵۷۸۳۱۵۱ Ahvaz, Iran.
Department of Chemistry, Faculty of Science, Shahid Chamran University of Ahvaz,۶۱۳۵۷۸۳۱۵۱ Ahvaz, Iran.
چکیده
[Zn(NCS)Cl(L)]n (Zn-SCP) is a one-dimensional coordination polymer with a terminalthiocyanate group. The flexible sulfur donor ligand is bridged between metal centers by the antianti-anti conformation which forms an infinite ۱D zigzag chain and the third and fourthcoordination spheres are occupied by terminal Cl- and NCS- anions [۱]. Considering the HSABconcept (Hard-Soft Acid Base) [۲], N-coordinated thiocyanate as a Lewis base has a good potentialfor coordinating mercury from its free sulfur atom. In this work, we have used Zn-SCP for thedetection of Hg۲+ from water solution with different consecrations. Mercury has been coordinatedto the free sulfur of thiocyanate groups as it was excepted. The IR spectrum of Zn-SCP showed aremarkable shift for the NCS peak from ۲۰۷۰ cm-۱ to ۲۱۲۰ cm-۱ which clearly shows the changein the coordination sphere. The white color of Zn-SCP powder was changed to grey bycoordination with mercury [۳]. It is worth mentioning that Zn-SCP has selectivity in the detectionof mercury and there were no changes for other metals such as Pb۲+, Cd۲+, or copper. FT-IR, UVvisible,and ICP have confirmed the binding of mercury to thiocyanate. The Hg۲+ ions which arecoordinated to the Zn-SCP could be removed from the water solution by simple filtration.کلیدواژه ها
Mercury detection; Sulfur coordination polymer; Zn complex; Methimazolebased ligandsاطلاعات بیشتر در مورد COI
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