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Influence of 2‐Aminopyridine on the Formation of Molybdates under Hydrothermal Conditions
Author(s) -
Pavani Katikaneani,
Ramanan Arunachalam
Publication year - 2005
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/ejic.200500092
Subject(s) - chemistry , hydrothermal circulation , hydrothermal synthesis , aqueous solution , hydrothermal reaction , wolframite , 2 aminopyridine , crystallography , powder diffraction , crystal structure , single crystal , diffraction , transition metal , autoclave , inorganic chemistry , tungsten , chemical engineering , medicinal chemistry , organic chemistry , catalysis , physics , optics , engineering
The hydrothermal reaction of an aqueous ammonium heptamolybdate solution with first‐row transition metal salts in the presence of 2‐aminopyridine at around 180 °C and under autogenous pressure yields several molybdates, such as the 1D chains in (C 5 N 2 H 7 ) 4 Mo 8 O 26 ( 1 ), zero‐dimensional (C 5 N 2 H 7 ) 6 Mo 7 O 24 · 3H 2 O ( 2 ), and the first synthesis of Lindgrenite [Cu 3 Mo 2 O 8 (OH) 2 ( 3 )] The structures of these materials were established by single‐crystal and powder X‐ray diffraction techniques. The crystal structures of wolframite‐based MnMoO 4 ( 4 ) and ZnMoO 4 ( 5 ) were established by powder X‐ray diffraction. The role of 2‐aminopyridine (2‐ampy) in the formation of the different solids under hydrothermal conditions is discussed. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)