Trapping of NbV by {XW9O33}9– (X = As, Sb): Formation of New Sandwich-Type POM Complexes and Their Solution Behavior

Alexandra A. Shmakova; Tamara E. Romanova; Nikolay B. Kompankov; Pavel A. Abramov; Maxim N. Sokolov

doi:10.1002/ejic.201900209

Trapping of Nb^V by {XW₉O₃₃}^9– (X = As, Sb): Formation of New Sandwich-Type POM Complexes and Their Solution Behavior

Alexandra A. Shmakova, Tamara E. Romanova, Nikolay B. Kompankov, Pavel A. Abramov, Maxim N. Sokolov

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

Oxalate ligands in Nb^V oxalate complexes are labile, making the latter convenient niobium source for preparation of new mixed W/Nb polyoxometalates under mild conditions. Reactions of [NbO(C₂O₄)₂(H₂O)₂]^– with [α-B-XW₉O₃₃]^9– (X = As, Sb) result in formation of sandwich-type anions. For X = As, [(α-B-AsW₉O₃₃)₂(NbO)₃(H₂O)]^9– and [(α-B-AsW₉O₃₃)₂(NbO)₂(H₂O)]^12– were the products. In the case of antimony, [(α-B-SbW₉O₃₃)₂{Nb(C₂O₄)}₂]^12– anion with two trapped {Nb(C₂O₄)}³⁺ fragments was isolated and structurally characterized. Solution behavior of the new heteropolyniobotungstates was studied by combined HPLC-ICP-AES technique.

Original language	English
Pages (from-to)	2543-2548
Number of pages	6
Journal	European Journal of Inorganic Chemistry
Volume	2019
Issue number	20
DOIs	https://doi.org/10.1002/ejic.201900209
Publication status	Published - 2 Jun 2019

Keywords

Niobium
Solution behavior
[α-B-XW9O33]–

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10.1002/ejic.201900209

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@article{6c9dd293881f42a2b37c0564d85819c9,

title = "Trapping of NbV by {XW9O33}9– (X = As, Sb): Formation of New Sandwich-Type POM Complexes and Their Solution Behavior",

abstract = "Oxalate ligands in NbV oxalate complexes are labile, making the latter convenient niobium source for preparation of new mixed W/Nb polyoxometalates under mild conditions. Reactions of [NbO(C2O4)2(H2O)2]– with [α-B-XW9O33]9– (X = As, Sb) result in formation of sandwich-type anions. For X = As, [(α-B-AsW9O33)2(NbO)3(H2O)]9– and [(α-B-AsW9O33)2(NbO)2(H2O)]12– were the products. In the case of antimony, [(α-B-SbW9O33)2{Nb(C2O4)}2]12– anion with two trapped {Nb(C2O4)}3+ fragments was isolated and structurally characterized. Solution behavior of the new heteropolyniobotungstates was studied by combined HPLC-ICP-AES technique.",

keywords = "Niobium, Solution behavior, [α-B-XW9O33]–",

author = "Shmakova, {Alexandra A.} and Romanova, {Tamara E.} and Kompankov, {Nikolay B.} and Abramov, {Pavel A.} and Sokolov, {Maxim N.}",

year = "2019",

month = jun,

day = "2",

doi = "10.1002/ejic.201900209",

language = "English",

volume = "2019",

pages = "2543--2548",

journal = "European Journal of Inorganic Chemistry",

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publisher = "Wiley-VCH Verlag",

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TY - JOUR

T1 - Trapping of NbV by {XW9O33}9– (X = As, Sb)

T2 - Formation of New Sandwich-Type POM Complexes and Their Solution Behavior

AU - Shmakova, Alexandra A.

AU - Romanova, Tamara E.

AU - Kompankov, Nikolay B.

AU - Abramov, Pavel A.

AU - Sokolov, Maxim N.

PY - 2019/6/2

Y1 - 2019/6/2

N2 - Oxalate ligands in NbV oxalate complexes are labile, making the latter convenient niobium source for preparation of new mixed W/Nb polyoxometalates under mild conditions. Reactions of [NbO(C2O4)2(H2O)2]– with [α-B-XW9O33]9– (X = As, Sb) result in formation of sandwich-type anions. For X = As, [(α-B-AsW9O33)2(NbO)3(H2O)]9– and [(α-B-AsW9O33)2(NbO)2(H2O)]12– were the products. In the case of antimony, [(α-B-SbW9O33)2{Nb(C2O4)}2]12– anion with two trapped {Nb(C2O4)}3+ fragments was isolated and structurally characterized. Solution behavior of the new heteropolyniobotungstates was studied by combined HPLC-ICP-AES technique.

AB - Oxalate ligands in NbV oxalate complexes are labile, making the latter convenient niobium source for preparation of new mixed W/Nb polyoxometalates under mild conditions. Reactions of [NbO(C2O4)2(H2O)2]– with [α-B-XW9O33]9– (X = As, Sb) result in formation of sandwich-type anions. For X = As, [(α-B-AsW9O33)2(NbO)3(H2O)]9– and [(α-B-AsW9O33)2(NbO)2(H2O)]12– were the products. In the case of antimony, [(α-B-SbW9O33)2{Nb(C2O4)}2]12– anion with two trapped {Nb(C2O4)}3+ fragments was isolated and structurally characterized. Solution behavior of the new heteropolyniobotungstates was studied by combined HPLC-ICP-AES technique.

KW - Niobium

KW - Solution behavior

KW - [α-B-XW9O33]–

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U2 - 10.1002/ejic.201900209

DO - 10.1002/ejic.201900209

M3 - Article

AN - SCOPUS:85066062938

VL - 2019

SP - 2543

EP - 2548

JO - European Journal of Inorganic Chemistry

JF - European Journal of Inorganic Chemistry

SN - 1434-1948

IS - 20

ER -

Trapping of Nb^V by {XW₉O₃₃}^9– (X = As, Sb): Formation of New Sandwich-Type POM Complexes and Their Solution Behavior

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