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Twisted oxygen-containing oligosilanes--unprecedented examples of sigma-n mixed conjugated systems

, : Twisted oxygen-containing oligosilanes--unprecedented examples of sigma-n mixed conjugated systems. Chemical Communications: 1810-1812

Twisting the silicon backbone conformation in oxygen containing oligosilanes towards dihedral angles of 120-130 degrees either by intramolecular hydrogen bonding or incorporation into a covalently bonded ring system effectively extends the delocalization of electrons in these sigma-n mixed conjugated systems.


PMID: 17476395

DOI: 10.1039/b618438c

Other references

Kondo K., 1988: Dementia in the elderly age and its management. Hokkaido Journal of Medical Science 63(4): 478

Nakagawa, Y.; Kosugi, H.; Miyajima, A.; Arai, K.; Yokota, T., 1994: Structure of the gene encoding the alpha subunit of the human granulocyte-macrophage colony stimulating factor receptor. Implications for the evolution of the cytokine receptor superfamily. The receptor for granulocyte-macrophage colony-stimulating factor (GM-CSF) is composed of at least two subunits, alpha and beta. In addition to the conserved cysteine residues and a "WSxWS" motif, the extracellular segments of both subun...

Vinogradov, E.Ia.; Ved'mina, E.A.; Poletaev, S.D., 1972: Antagonistic properties of silicate bacilli. Antibiotiki 17(11): 994-997

Verney, H.; Nightingale, F., 1970: The perfect aunt--FN 1820-1910. News Letter; Florence Nightingale International Nurses Association 70: 13-16

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Johnson T.S.; Hudson J.L.; Feldman M.E.; Irvin G.L.IIi, 1975: Stimulation of immuno prophylaxis and cyto toxic effector cells against el 4 leukemia in syngeneic mice induced by radiation blocked el 4 cells. Radiation Research 62(3): 607

Sundler R.; Emilsson A.; Wijkander J., 1990: A glycerol ether induces mobilization and 12 lipoxygenation of arachidonic acid in macrophages synergistic effect on mobilization and induction of leukotriene c formation by activators of protein kinase c. A glycerol triether, 1,2-isopropylidene 3-0-decanyl-sn-glycerol, was found to induce mobilization of arachidonic acid from ethanolamine phosphoglycerides and phosphatidylinositol in mouse peritoneal macrophages. This effect showed structural speci...

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