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Synthesis and Characterization of Fe‐ or Cu‐Substituted Molybdenum‐Enriched Tungstodiphosphates
Author(s) -
Belghiche Robila,
Contant Roland,
Lu Yu Wei,
Keita Bineta,
Abbessi Mostefa,
Nadjo Louis,
Mahuteau Jacqueline
Publication year - 2002
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/1099-0682(200206)2002:6<1410::aid-ejic1410>3.0.co;2-o
Subject(s) - chemistry , molybdenum , characterization (materials science) , copper , inorganic chemistry , nanotechnology , organic chemistry , materials science
Stereospecific routes were followed to synthesize five new Fe 3+ and Cu 2+ ‐substituted Mo‐enriched Dawson‐type heteropolyanions as aqueous soluble potassium salts: α 2 ‐K 7 [Fe(OH 2 )P 2 W 12 Mo 5 O 61 ] and α 2 ‐K 7 [Fe(OH 2 )P 2 W 13 Mo 4 O 61 ], α 1 ‐ and α 2 ‐K 8 [Cu(OH 2 )P 2 W 12 Mo 5 O 61 ] and α 2 ‐K 8 [Cu(OH 2 )P 2 W 13 Mo 4 O 61 ]. The substituted species as well as their immediate lacunary precursors were characterized by IR, UV/Visible and 31 P NMR spectroscopy. In particular 31 P NMR spectroscopy indicates that isomerically pure compounds were obtained. The activity of these chemicals in electrocatalysis is illustrated by the reduction of nitrite for Fe 3+ derivatives and the reduction of nitrate for Cu 2+ compounds. (© Wiley‐VCH Verlag GmbH, 69451 Weinheim, Germany, 2002)