Open AccessThe Smallest Polyoxotungstate Retained by TRIS-Stabilization
Author(s) -
Nadiia I. Gumerova,
Alexander Roller,
Mark A. Rambaran,
C. André Ohlin,
Annette Rompel
Publication year - 2021
Publication title -
inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 233
eISSN - 1520-510X
pISSN - 0020-1669
DOI - 10.1021/acs.inorgchem.1c01188
Subject(s) - chemistry , tris , stereochemistry , biochemistry
A polycondensation reaction of the orthotungstate anion WO 4 2- , buffered at pH 7.5 in a TRIS-HCl (0.15 M) solution, results in the first example of a discrete polyoxotungstate anion, with just two W ions stabilized with TRIS ligands. It was isolated and characterized as Na 2 [W VI 2 O 6 (C 4 O 3 NH 10 ) 2 ]·6H 2 O by single-crystal and powder X-ray diffraction, FT-IR spectroscopy, thermogravimetrical analysis (TGA), and elemental analysis in solid state and by electro-spray ionization mass spectrometry (ESI-MS), 13 C, and 183 W NMR, as well as Raman spectroscopy in solution. This synthesis demonstrates the crucial and new role of the added tris-alkoxy ligand in the development of a new hybrid TRIS-isopolytungstate with the lowest known nuclearity (so far) and the terminal oxygens substituted with two nitrogen atoms arising from amines of the TRIS ligands.