Complexing properties of 2-pyridylphoshonate and 2-pyridylsulfonate ligands for Zn2+ and Ag+ central atoms. Issue 15 (18th August 2022)

• Record Type: Journal Article
• Authors: Vargová, Zuzana; Rendošová, Michaela; Saksová, Silvia; Gyepes, Róbert; Vilková, Mária
• Is Part Of: Journal of coordination chemistry. Volume 75:Issue 15/16(2022)
• Page Start: 2077
• Page End: 2090
• Publication Date: 2022-08-18
• Subjects: Silver(I) -- zinc(II) -- speciation -- potentiometry -- crystal structure; Coordination compounds -- Periodicals; 541.2242
• DOI: 10.1080/00958972.2022.2127095
• Languages: English
• ISSNs: 0095-8972

Abstract

Abstract: The Zn 2+ /Ag + -pypo and pysu (pypo = 2-pyridylphosphonate, pysu = 2-pyridylsulfonate) complexes speciation in aqueous solution at I = 0.1 M (KNO3 ) and 25 °C is described in detail under our experimental synthetic conditions. Protonation and stability constants were determined, and distribution diagrams show protonated and deprotonated complexes formation in the case of Zn 2+ /Ag + pypo/pysu binary system, respectively. Moreover, the new complex, {[Zn(H2 pypo)2 (H2 O)2 ]}n (ClO4 )2n ·2nH2 O, was isolated and its spectral and structural properties were determined. An unusual pypo bidentate coordination mode is described and compared with published ones. Graphical Abstract: UF0001