Niobium uptake by {P2W12} polyoxoanion with [NbO(C2O4)2(H2O)2]- as Nb source

被引：4

作者：

Shmakova, Alexandra A. ^{[1
]}

Sukhikh, Taisiya S. ^{[1
]}

Volchek, Victoria V. ^{[1
]}

Yanshole, Vadim ^{[2
,3
]}

Stass, Dmitri, V ^{[2
,4
]}

Filatov, Eugeniy Yu ^{[1
]}

Glebov, Eugeniy M. ^{[2
,4
]}

Abramov, Pavel A. ^{[1
,5
]}

Sokolov, Maxim N. ^{[1
,2
]}

机构：

[1] Nikolaev Inst Inorgan Chem SB RAS, 3 Akad Lavrentiev Ave, Novosibirsk 630090, Russia

[2] Novosibirsk State Univ, 2 Pirogova Str, Novosibirsk 630090, Russia

[3] Int Tomog Ctr, Inst Skaya Str 3a, Novosibirsk 630090, Russia

[4] Voevodsky Inst Chem Kinet & Combust, Inst Skaya Str 3, Novosibirsk 630090, Russia

[5] South Ural State Univ, Prospekt Lenina 76, Chelyabinsk 454080, Russia

来源：

INORGANICA CHIMICA ACTA | 2020年 / 502卷 / 502期

关键词：

ICP-AES TECHNIQUE; POLYOXOMETALATE; SPECTROMETRY; STABILITY; CLUSTER;

D O I：

10.1016/j.ica.2019.119319

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Reaction of (NH4)[NbO(C2O4)(2)(H2O)(2)]center dot 3H(2)O with K-12[H2P2W12O48]center dot 24H(2)O in aqueous solution at pH 1.7 leads to the formation of mixed Nb/W species based on [(P2M18O60)(2)(mu-O)(2)](n) (M is a Nb/W mixture, when Nb ratio ranges from 6 to 8 and charge differs from 14- to 16- correspondingly) archetype. Direct crystallization from the reaction media results in colorless crystals with the composition formulated as K-9(NH4)(5) [cis-(P2W15Nb3O61)(2)]center dot 48H(2)O (1). Crystallization in the presence of (NMe2H2)Cl yields two phases (2a and 2b), containing the same 1trans-(P2W14.7Nb3.3O61)(2)](14.6) anions but different cation/H2O compositions. Both phases are present in a mixture with bulk composition corresponding to (NMe2H2)(14.6)[P2W14.7Nb3.3O61](2)center dot 28H(2)O (2). The solution behavior of 1 and 2 was studied with HR-ESIMS and HPLC-ICP-AES. During XRPD study of 2 we found blue coloration of the thin film of the complex. This effect has only surface nature and was studied by diffuse reflectance spectra.

引用

页数：6

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