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Synthesis and Characterization of a Soluble Vanadium‐Containing Keggin Polyoxoniobate by ESI‐MS and 51 V NMR: (TMA) 9 [V 3 Nb 12 O 42 ]·18H 2 O
Author(s) -
Son JungHo,
Ohlin C. André,
Larson Emma C.,
Yu Ping,
Casey William H.
Publication year - 2013
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.201201056
Subject(s) - chemistry , vanadium , tetramethylammonium hydroxide , tetramethylammonium , nmr spectra database , polyoxometalate , hydrothermal synthesis , crystallography , niobium , nuclear magnetic resonance spectroscopy , spectroscopy , solid state nuclear magnetic resonance , hydrothermal circulation , hydroxide , inorganic chemistry , spectral line , stereochemistry , catalysis , ion , nuclear magnetic resonance , organic chemistry , physics , quantum mechanics , astronomy , seismology , geology
The vanadium‐containing heteropolyoxoniobate (TMA) 9 [V 3 Nb 12 O 42 ] · 18H 2 O was synthesised by hydrothermal reaction of V 2 O 5 and hydrous niobium oxide in tetramethylammonium hydroxide solution. The cluster has an α‐Keggin structure with a central VO 4 and two trans ‐bicapped VO 5 . The water‐soluble product was characterised by X‐ray crystallography, ESI‐MS and both liquid‐ and solid‐state 51 V NMR spectroscopy. The solid‐ and solution‐phase 51 V NMR spectra indicate two major peaks corresponding to one VO 4 and two VO 5 sites.