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Syntheses and characterization of the noble‐metal substituted heptadecatungstodiarsenates
Author(s) -
Jin SongLin,
Liu HuiZhang,
Shen Lan,
Li Pei,
Qiu DeRen,
Xie GaoYang,
Chen ShiMing
Publication year - 1997
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.19970150307
Subject(s) - chemistry , lacunary function , noble metal , cyclic voltammetry , acetonitrile , electron paramagnetic resonance , transition metal , redox , electrochemistry , metal , inorganic chemistry , iridium , tungsten , organic chemistry , catalysis , electrode , nuclear magnetic resonance , pure mathematics , physics , mathematics
Four Dawson type heteropolyoxotungstates substituted by noble metals with the general Formula (TBA) u [As 2 W 17 M(OH 2 )O 61 ], where M=Pd II , Ru III , Ir IV and Pt IV , are prepared by filling the vacant site of the lacunary precursor α 2 ‐K 10 As 2 W 17 O 61 . UV‐vis and IR spectra are similar to the other transition metal substituted Dawson type tungstodiarsenates. EPR result provides direct evidence to identify the presence of noble metal cation. Electrochemical behavior investigated by cyclic voltammetry in acetonitrile displays four reversible one‐electron redox couples attributed to the W(VI→V) process of tungsten‐oxo framework.