From Bidentate Gallium Lewis Acids to Supramolecular Complexes.
Angew Chem Int Ed Engl
; 56(22): 6107-6111, 2017 05 22.
Article
en En
| MEDLINE
| ID: mdl-28418175
ABSTRACT
Bidentate gallium Lewis acids were prepared by the reaction of diethynyldiphenylsilane with neat trimethyl- or triethylgallium. Bis[(dimethylgallyl)ethynyl]diphenylsilane (1) and diethylgallyl derivative 2 were characterized as Et2 O or pyridine adducts by NMR spectroscopy; 2â
2Py was isolated. Lewis acids 1 and 2 form host-guest adducts with bidentate nitrogen bases, but defined cyclic 11 adducts are only formed between 1 and bases with matching Nâ
â
â
N distances 4,4'-dimethyl-3,3'-bipyridinylacetylene (3), bis[(pyridin-3-yl)ethynyl]diphenylsilane (4), and bis[(2-methylpyridin-5-yl)ethynyl]diphenylsilane (5). The structures of adducts 1â
3, 1â
4, and 1â
5 were established by X-ray diffraction experiments. 2â
2Py reacts with DABCO to afford polymeric (DABCO-2-)n .
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Banco de datos:
MEDLINE
Idioma:
En
Revista:
Angew Chem Int Ed Engl
Año:
2017
Tipo del documento:
Article
País de afiliación:
Alemania