Base-Free Molybdenum and Tungsten Bicyclic Silylene Complexes Stabilized by a Homoaromatic Contribution
Publication type: Journal Article
Publication date: 2009-01-02
scimago Q1
wos Q1
SJR: 5.554
CiteScore: 22.5
Impact factor: 15.6
ISSN: 00027863, 15205126
PubMed ID:
19119841
General Chemistry
Catalysis
Biochemistry
Colloid and Surface Chemistry
Abstract
Unprecedented base-free bicyclic silylene complexes of molybdenum and tungsten 3a,b (a, M = Mo; b, M = W) were prepared by the reaction of the calcium salt of 1,2,3,4-tetrakis(di-tert-butylmethylsilyl)tetrasilabicyclo[1.1.0]butane-2,4-diide 2(2-) x Ca(2+) with Cp(2)MCl(2) (M = Mo, W). The unusual structural features of 3b (long SiW double bond, short skeletal (sp(2)-Si)-(sp(3)-Si) bonds and extremely long Si-Si bridge) are indicative of a contribution from the zwitterionic resonance form W(delta-)-Si(delta+), in which the electrophilic silicon center is stabilized by the Si(3)-homoaromatic conjugation. This was supported by the theoretical calculations (NBO, NPA) revealing the presence of pi(WSi) and sigma(Si-Si bridge) interactions.
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TAKANASHI K. et al. Base-Free Molybdenum and Tungsten Bicyclic Silylene Complexes Stabilized by a Homoaromatic Contribution // Journal of the American Chemical Society. 2009. Vol. 131. No. 3. pp. 916-917.
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TAKANASHI K., Lee V. Y., Yokoyama T., Sekiguchi A. Base-Free Molybdenum and Tungsten Bicyclic Silylene Complexes Stabilized by a Homoaromatic Contribution // Journal of the American Chemical Society. 2009. Vol. 131. No. 3. pp. 916-917.
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TY - JOUR
DO - 10.1021/ja8088313
UR - https://doi.org/10.1021/ja8088313
TI - Base-Free Molybdenum and Tungsten Bicyclic Silylene Complexes Stabilized by a Homoaromatic Contribution
T2 - Journal of the American Chemical Society
AU - TAKANASHI, Kazunori
AU - Lee, Vladimir Ya.
AU - Yokoyama, Taka
AU - Sekiguchi, Akira
PY - 2009
DA - 2009/01/02
PB - American Chemical Society (ACS)
SP - 916-917
IS - 3
VL - 131
PMID - 19119841
SN - 0002-7863
SN - 1520-5126
ER -
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BibTex (up to 50 authors)
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@article{2009_TAKANASHI,
author = {Kazunori TAKANASHI and Vladimir Ya. Lee and Taka Yokoyama and Akira Sekiguchi},
title = {Base-Free Molybdenum and Tungsten Bicyclic Silylene Complexes Stabilized by a Homoaromatic Contribution},
journal = {Journal of the American Chemical Society},
year = {2009},
volume = {131},
publisher = {American Chemical Society (ACS)},
month = {jan},
url = {https://doi.org/10.1021/ja8088313},
number = {3},
pages = {916--917},
doi = {10.1021/ja8088313}
}
Cite this
MLA
Copy
TAKANASHI, Kazunori, et al. “Base-Free Molybdenum and Tungsten Bicyclic Silylene Complexes Stabilized by a Homoaromatic Contribution.” Journal of the American Chemical Society, vol. 131, no. 3, Jan. 2009, pp. 916-917. https://doi.org/10.1021/ja8088313.
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