TY - JOUR
T1 - Coordination of Carbon Dioxide to the Lewis Acid Site of a Zinc-Substituted Polyoxometalate and Formation of an Adduct Using a Polyoxometalate–2,4,6-Trimethylpyridine Frustrated Lewis Pair
AU - Chen, Bo
AU - Neumann, Ronny
N1 - Funding Information:
This research was funded by the Israel Science Foundation (grant number 763/14). R. N. is the Rebecca and Israel Sieff Professor of Organic Chemistry.
Publisher Copyright:
© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2018/2/14
Y1 - 2018/2/14
N2 - The coordination of CO2 to Lewis bases is well-known; however, its binding to Lewis acids is much less common. The ligation of CO2 to a zinc-substituted Wells–Dawson type polyoxometalate yielded [(n-C8H17)4N]8[α2-P2W17O61Zn(CO2)], which was studied by variable temperature 1H NMR, 13C NMR, and 31P NMR spectroscopy from room temperature to 201 K. The spectra were analyzed in consideration of predicted “end-on” coordination, POM-Zn-O-C-O, and “side-on” coordination where in addition an adjacent basic oxygen atom in the polyoxometalate binds the carbon atom of CO2. After adding 2,4,6-trimethypyridine into the solution, a plausible adduct, POM-CO2-2,4,6-trimethypyridine, was observed.
AB - The coordination of CO2 to Lewis bases is well-known; however, its binding to Lewis acids is much less common. The ligation of CO2 to a zinc-substituted Wells–Dawson type polyoxometalate yielded [(n-C8H17)4N]8[α2-P2W17O61Zn(CO2)], which was studied by variable temperature 1H NMR, 13C NMR, and 31P NMR spectroscopy from room temperature to 201 K. The spectra were analyzed in consideration of predicted “end-on” coordination, POM-Zn-O-C-O, and “side-on” coordination where in addition an adjacent basic oxygen atom in the polyoxometalate binds the carbon atom of CO2. After adding 2,4,6-trimethypyridine into the solution, a plausible adduct, POM-CO2-2,4,6-trimethypyridine, was observed.
KW - Carbon dioxide
KW - Coordination modes
KW - Lewis pairs
KW - Noncovalent interactions
KW - Polyoxometalates
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U2 - 10.1002/ejic.201701293
DO - 10.1002/ejic.201701293
M3 - Article
AN - SCOPUS:85041594806
VL - 2018
SP - 791
EP - 794
JO - Chemische Berichte
JF - Chemische Berichte
SN - 0009-2940
IS - 6
ER -