Synthesis, structure, and electrochemical potential of a 3d − 4f heterobimetallic polyoxometalate DOI
Wei Yao, Wei Liu, Enjun Gao

et al.

Journal of Coordination Chemistry, Journal Year: 2023, Volume and Issue: 76(11-12), P. 1322 - 1332

Published: June 18, 2023

A three-dimensional (3-D) 3d-4f polyoxometalate (POM), [Gd2Cu(SiW12O40)(Hpca)4(pca)4(H2O)3]·(Hpca)2·H2O (1) (Hpca = isonicotinic acid, abbreviated as Cu-Gd-CP), was synthesized by hydrothermal method and characterized XRD, TG, IR, Ultraviolet–visible (UV–vis) spectra. The Gd3+ ions have two different coordination modes, which correspond to distinct kinds of dinuclear secondary building units, ([Gd12(Hpca)4(pca)4(H2O)2] [Gd22(Hpca)4(pca)4(H2O)4]). Thus, there are types pores (pore pore B) filled free Hpca molecules in Cu-Gd-CP. Hpac oriented perpendicular each other B. electrochemical potential Cu-Gd-CP is explored.

Language: Английский

A combined solid state, solution and DFT study of a dimethyl-cyclen-Pd(II) complex DOI Creative Commons
Daniele Paderni, Maria Voccia, Eleonora Macedi

et al.

Dalton Transactions, Journal Year: 2024, Volume and Issue: 53(34), P. 14300 - 14314

Published: Jan. 1, 2024

A new palladium(II) complex containing the previously synthesized 4,10-bis[(3-hydroxy-4-pyron-2-yl)methyl]-1,7-dimethyl-1,4,7,10-tetraazacyclododecane ligand maltonis was prepared and characterized both in solution solid state. Hirshfeld surface energy framework analyses were also performed. Because already showed antineoplastic activity, complexation of Pd(II), chosen as an alternative to Pt(II), investigated study its possible biological activity. UV-vis NMR studies confirmed formation stability aqueous at physiological pH. X-ray diffraction data revealed a structure where Pd(II) ion is lodged dimethyl-cyclen cavity, with maltol rings facing each other (closed shape) even if they are not involved coordination. DFT analysis performed order understand most stable shape complex. In view evaluating bioactive conformation, suggested slight energetic preference for closed one. The resulting stabilized by intermolecular interactions that replace intramolecular present optimized According calculated energies, notwithstanding rarity, thermodynamically preferred one among analogous complexes different metal ions (Pt(II), Co(II), Cu(II)). Finally, interaction between nucleosides evaluated through calculations, revealing purines

Language: Английский

Citations

3
A Cyclen-Functionalized Cobalt-Substituted Sandwich-Type Tungstoarsenate with Versatility in Removal of Methylene Blue and Anti-ROS-Sensitive Tumor Cells DOI Creative Commons
Jiai Hua,

Xueman Wei,

Yifeng Li

et al.

Molecules, Journal Year: 2022, Volume and Issue: 27(19), P. 6451 - 6451

Published: Sept. 30, 2022

Oxidative degradation by using reactive oxygen species (ROS) is an effective method to treat pollutants. The synthesis of artificial oxidase for the dyes a hot spot in molecular science. In this study, nanoscale sandwich-type polyoxometalate (POM) on basis tetra-nuclear cobalt cluster and trivacant B-α-Keggin-type tungstoarsenate {[Co(C8H20N4)]4}{Co4(H2O)2[HAsW9O34]2}∙4H2O (abbreviated as CAW, C8H20N4 = cyclen) has been synthesized structurally examined infrared (IR) spectrum, ultraviolet-visible (UV-Vis) X-ray photoelectron spectrum (XPS), single-crystal diffraction (SXRD), bond valence sum (Σs) calculation. According structural analysis, principal element CAW derived from modifying polyanion {Co4(H2O)2 [HAsW9O34]2}8- with four [Co(Cyclen)]2+, which 1,4,7,10-tetraazacyclododecane (cyclen) firstly applied modify POM. It also demonstrated that capable efficiently catalyzing production ROS synergistic effects POM fragments Co-cyclen complexes. Moreover, can interfere morphology proliferation sensitive cells producing exhibits ability specifically eliminating methylene blue (MB) solution system both adsorption catalytic oxidation.

Language: Английский

Citations

7
A nanoscale ferromagnetic nickel-supercluster functionalized giant heterometallic arsenototungstate with ability in catalyzing reactive oxygen species generation DOI
Xiang Ma,

Yusheng Sun,

Qinli Lu

et al.

Journal of Molecular Structure, Journal Year: 2023, Volume and Issue: 1291, P. 136010 - 136010

Published: June 17, 2023

Language: Английский

Citations

4
An 1,4,7,10-tetraazacyclododecane-nickel complex functionalized polymolybdate acting as artificial oxidase in removing methylene blue DOI
Xiang Ma,

Yujin Li,

Longfeng Meng

et al.

Journal of Molecular Structure, Journal Year: 2024, Volume and Issue: 1312, P. 138502 - 138502

Published: May 3, 2024

Language: Английский

Citations

1
Synthesis, structure, and electrochemical potential of a 3d − 4f heterobimetallic polyoxometalate DOI
Wei Yao, Wei Liu, Enjun Gao

et al.

Journal of Coordination Chemistry, Journal Year: 2023, Volume and Issue: 76(11-12), P. 1322 - 1332

Published: June 18, 2023

A three-dimensional (3-D) 3d-4f polyoxometalate (POM), [Gd2Cu(SiW12O40)(Hpca)4(pca)4(H2O)3]·(Hpca)2·H2O (1) (Hpca = isonicotinic acid, abbreviated as Cu-Gd-CP), was synthesized by hydrothermal method and characterized XRD, TG, IR, Ultraviolet–visible (UV–vis) spectra. The Gd3+ ions have two different coordination modes, which correspond to distinct kinds of dinuclear secondary building units, ([Gd12(Hpca)4(pca)4(H2O)2] [Gd22(Hpca)4(pca)4(H2O)4]). Thus, there are types pores (pore pore B) filled free Hpca molecules in Cu-Gd-CP. Hpac oriented perpendicular each other B. electrochemical potential Cu-Gd-CP is explored.

Language: Английский

Citations

0