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- W1992008333 abstract "Abstract The structure of 5,5-dimethyl-5,6,11,12-tetrahydro-5H-dibenzo[b,f]silocin (I) has been determined from X-ray data collected by counter methods. I crystallizes in the orthorhombic space group Pbca with a = 15.577(4), b = 22.368(5) and c = 8.640(2) A; observed and calculated densities (Z = 8) are 1.11 g cm−3. Anisotropic full-matrix least squares refinement of nonhydrogen atoms, with hydrogen atoms included at fixed ideal locations gave a conventional R-factor of 5.0%. This is the first crystal structure of the dibenzo[b,f]metallocin framework with a single heteroatom in the central ring. The tricyclic framework adopts a distorted boat conformation in the solid state in contrast to dibenzcyclooctadiene. The dihedral angle between the planes of the two halves of the tricyclic framework (the benzo groups with the two central ring atoms bonded to them) is 111.4°." @default.
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- W1992008333 date "1978-02-01" @default.
- W1992008333 modified "2023-09-27" @default.
- W1992008333 title "The structure of 5,5-dimethyl-5,6,11,12-tetrahydro-5h-dibenzo[b,f]silocin" @default.
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- W1992008333 doi "https://doi.org/10.1016/s0022-328x(00)83755-9" @default.
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