Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Keggin-type polyoxometalate 1 : 1 complexes of Pb(ii) and Bi(iii) : Experimental, theoretical and luminescence studies. / Mukhacheva, Anna A.; Asanova, Tatiana; Ryzhikov, Maxim R. и др.
в: Dalton Transactions, Том 50, № 20, 25.05.2021, стр. 6913-6922.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Keggin-type polyoxometalate 1 : 1 complexes of Pb(ii) and Bi(iii)
T2 - Experimental, theoretical and luminescence studies
AU - Mukhacheva, Anna A.
AU - Asanova, Tatiana
AU - Ryzhikov, Maxim R.
AU - Sukhikh, Taisiya S.
AU - Kompankov, Nikolay B.
AU - Yanshole, Vadim V.
AU - Berezin, Alexey S.
AU - Gushchin, Artem L.
AU - Abramov, Pavel A.
AU - Sokolov, Maxim N.
N1 - Funding Information: This work was done within the France-Russia framework IRP-CNRS CLUSPOM. VY thanks the Ministry of Science and Higher Education of RF for the access to MS equipment. The authors thank Dr I. Korolkov for XRPD experiments conducted in the XRD Centre of NIIC SB RAS, V. Volchek for ICP-AES experiments and Dr S. A. Adonin for helpful discussions. Publisher Copyright: © The Royal Society of Chemistry. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/5/25
Y1 - 2021/5/25
N2 - Bi3+ and Pb2+ uptake by a monolacunary Keggin-type [PW11O39]7- anion leads to the formation of [PW11O39Bi]4- and [PW11O39Pb]5- complexes with a stereochemically active lone pair at the incorporated heterometal. The two complexes were isolated as (TBA)4[PW11O39Bi] (1) and (TBA)5[PW11O39Pb] (2) and characterized by 31P and 183W NMR spectroscopy, high-resolution electrospray mass-spectrometry (HR-ESI-MS) and cyclic voltammetry (CV). EXAFS and XANES data confirm the unchanged oxidation state and ψ-square pyramidal geometry of Bi3+ and Pb2+ in 1 and 2. DFT calculations were used in order to (i) confirm the absence of ligands attached to the heterometal sites in both complexes and localize the lone pair, and (ii) assign all signals in the 183W NMR spectra. Complexes 1 and 2 demonstrate photoluminescence (PL). A reversible change in the PL spectra of both complexes in the presence of water vapor has been detected. On the contrary, PL data for sandwich-type ((CH3)4N)4K3[H4(PW11O39)2Bi]·25H2O (3) do not show sensitivity to water vapor.
AB - Bi3+ and Pb2+ uptake by a monolacunary Keggin-type [PW11O39]7- anion leads to the formation of [PW11O39Bi]4- and [PW11O39Pb]5- complexes with a stereochemically active lone pair at the incorporated heterometal. The two complexes were isolated as (TBA)4[PW11O39Bi] (1) and (TBA)5[PW11O39Pb] (2) and characterized by 31P and 183W NMR spectroscopy, high-resolution electrospray mass-spectrometry (HR-ESI-MS) and cyclic voltammetry (CV). EXAFS and XANES data confirm the unchanged oxidation state and ψ-square pyramidal geometry of Bi3+ and Pb2+ in 1 and 2. DFT calculations were used in order to (i) confirm the absence of ligands attached to the heterometal sites in both complexes and localize the lone pair, and (ii) assign all signals in the 183W NMR spectra. Complexes 1 and 2 demonstrate photoluminescence (PL). A reversible change in the PL spectra of both complexes in the presence of water vapor has been detected. On the contrary, PL data for sandwich-type ((CH3)4N)4K3[H4(PW11O39)2Bi]·25H2O (3) do not show sensitivity to water vapor.
UR - http://www.scopus.com/inward/record.url?scp=85106613521&partnerID=8YFLogxK
U2 - 10.1039/d1dt00499a
DO - 10.1039/d1dt00499a
M3 - Article
C2 - 33928982
AN - SCOPUS:85106613521
VL - 50
SP - 6913
EP - 6922
JO - Dalton Transactions
JF - Dalton Transactions
SN - 1477-9226
IS - 20
ER -
ID: 28753065