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Chen L, Jin M, Zheng R, Liu Y, Zhao J. Two 1,3-bis[tris(hydroxymethyl)methylamino]propane functionalized 3d–4f heterometallic arsenotungstates. INORG CHEM COMMUN 2019. [DOI: 10.1016/j.inoche.2019.04.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Berta L, Gâz A, Boda F, Curticapean A. Silver Cation Coordination Study to AsW9 Ligand – A Trilacunar Arsenotungstate Compound. ACTA MEDICA MARISIENSIS 2017. [DOI: 10.1515/amma-2017-0018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractObjective: The main objective of this research is to find the coordination ratio between AsW9and Ag+, as a preliminary study for synthesizing a new silver-arsenotungstate complex. Material and method: The ligand:cation molar ratio in complexes was determined by conductometric and potentiometric titrations of AsW9with silver salts: CH3COOAg, AgNO3. Results: The ratio was obtained from the inflexion points of the curves when molar ratio was plotted versus conductivity, or from the equivalence point when silver added volume was plotted versus pH value. Each graphic shows one point of inflexion corresponding to 1:1.54 ratio of AsW9:Ag+. In the same manner, the equivalent volumes determined by graphical method gave the ratio 1:1.53. The spectral results confirmed that a AsW9:Ag+complex was formed since the ligand absorption maxima values have been changed from 190 nm to 197 nm in the case of using AgNO3and 196 nm for CH3COOAg corresponding to the W=Odbond, and from 246.5 nm to 274 nm (AgNO3) and 270 nm (CH3COO-Ag+) for the W-Ob,c-W bond. Conclusions: Silver cation exhibit a preference for AsW9in a ratio of 3 to 2. This ratio can be associated to a sandwich type arrangement, with two trilacunary Keggin building blocks incorporating 3 metal cations in a tetrahedral geometry.
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Affiliation(s)
- Lavinia Berta
- University of Medicine and Pharmacy of Tîrgu Mureș, Tîrgu Mureș , Romania
| | - Andrei Gâz
- University of Medicine and Pharmacy of Tîrgu Mureș, Tîrgu Mureș , Romania
| | - Francisc Boda
- University of Medicine and Pharmacy of Tîrgu Mureș, Tîrgu Mureș , Romania
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Gong P, Li Y, Zhai C, Luo J, Tian X, Chen L, Zhao J. Syntheses, structural characterization and photophysical properties of two series of rare-earth-isonicotinic-acid containing Waugh-type manganomolybdates. CrystEngComm 2017. [DOI: 10.1039/c6ce02428a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Li Y, Liu Y, Gong P, Tian X, Luo J, Zhao J. Two isonicotinate-bridging lanthanide substituted phosphotungstate hybrids. INORG CHEM COMMUN 2016. [DOI: 10.1016/j.inoche.2016.10.036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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