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]–

UR - http://www.scopus.com/inward/record.url?scp=85066062938&partnerID=8YFLogxK

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 -