Synthesis and characterization of [PW11O39Ir(H2O)]4-: successful incorporation of Ir into polyoxometalate framework and study of the substitutional lability at the Ir(III) site |
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| Authors: | Sokolov Maxim N Adonin Sergey A Mainichev Dmitry A Vicent Cristian Zakharchuk Nina F Danilenko Andrey M Fedin Vladimir P |
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| Institution: | Nikolaev Institute of Inorganic Chemistry SB RAS, 630090, Lavrentieva st. 3, Novosibirsk, Russia. caesar@niic.nsc.ru |
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| Abstract: | The first Keggin-type heteropolyanion, PW(11)O(39)Ir(H(2)O)](4-) (1), was synthesized by hydrothermal reaction from two different polytungstate precursors and IrF(6)](2-). It was isolated as (Bu(4)N)(4)PW(11)O(39)Ir(H(2)O)] (1a), which was completely characterized by multinuclear (31)P and (183)W NMR, ESI-mass spectrometry and cyclic voltammetry. A rapid screening methodology to ascertain the intrinsic substitutional lability at the Ir site is also presented, based on ESI-MS. |
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