Coordination of Pt(IV) by {P8W48} Macrocyclic Inorganic Cavitand: Structural, Solution, and Electrochemical Studies

Anna A Kuznetsova; Victoria V Volchek; Vadim V Yanshole; Anastasiya D Fedorenko; Nikolay B Kompankov; Vasily V Kokovkin; Artem L Gushchin; Pavel A Abramov; Maxim N Sokolov

doi:10.1021/acs.inorgchem.2c01362

Coordination of Pt(IV) by {P₈W₄₈} Macrocyclic Inorganic Cavitand: Structural, Solution, and Electrochemical Studies

Inorg Chem. 2022 Sep 19;61(37):14560-14567. doi: 10.1021/acs.inorgchem.2c01362. Epub 2022 Sep 6.

Authors

Anna A Kuznetsova¹, Victoria V Volchek¹, Vadim V Yanshole^{2

3}, Anastasiya D Fedorenko¹, Nikolay B Kompankov¹, Vasily V Kokovkin¹, Artem L Gushchin¹, Pavel A Abramov¹, Maxim N Sokolov¹

Affiliations

¹ SB RAS, Nikolaev Institute of Inorganic Chemistry, 3 Akad. Lavrentiev Avenue, Novosibirsk 630090, Russia.
² International Tomography Center, Institutskaya str. 3a, Novosibirsk 630090, Russia.
³ Novosibirsk State University, Pirogova str. 1, Novosibirsk 630090, Russia.

PMID: 36067043
DOI: 10.1021/acs.inorgchem.2c01362

Abstract

Hydrothermal reaction of a macrocyclic inorganic POM cavitand Li₁₇(NH₄)₂₁H₂[P₈W₄₈O₁₈₄] with [Pt(H₂O)₂(OH)₄] results in coordination of up to six {Pt(H₂O)_x(OH)_4-x} fragments to the internal surface of the polyoxoanion. The product was isolated as K₂₂(NH₄)₉H₃[{Pt(OH)₃(H₂O)}₆P₈W₄₈O₁₈₄]·79H₂O (1) and characterized by multiple techniques in the solid state (SCXRD, XRPD, XPS, FTIR, and TGA) and in solution (NMR, ESI-MS, and HPLC-ICP-AES). Electrochemical properties were studied both in solution and as components of the paste electrode. The complex shows electrocatalytic activity in water oxidation.