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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 114 (1981), S. 86-108 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Polycyclic Compounds of the Triangulene Type, II1) Threefold ortho-Bridged Triphenylmethane DerivativesThe syntheses of the new polycyclic systems 12, 12c-dihydro-4,4,8,8,12,12-hexamethyl-4H, 8H dibenzo[cd, mn] pyrene (8) 11,11c-dihydro-7,7,11,11-tetramethyl-7-H-naphth[3,2,1,8-mnoa]aceanthrylene (43), and 9,13b-dihydro-5,5,9,9-tetramethyl-1,13-ethano-5H-naphth-[3,2,1-de] anthracene (44) are reported. The spectroscopic data are in accordance with a pyramidal C3v-structure for 8, a similiar Cs-structure for 43, and a flexible, helical C1-structure for 44. Furthermore, 8 can be transformed into its rapidly inverting pyramidal anion 11 and into its cation 9 which most probably is planar.
    Notes: Die Synthesen der neuen polycyclischen System 12, 12c-Dihydro-4,4,8,12, 12-hexamethyl-4H 8H-dibenzol[cd, mn] pyren (8), 11, 11c-Dihydro-7,7,11,11-tetramethyl-7H naphth[3,2,1,8-mnoa] aceanthrylen (43) und 9,13b-Dihydro-5,5,9,9-tetramethyl-1,13-ethano-5H-naphth[3,2,1-de]anthracen (44) werden mitgeteilt. Die spektroskopischen Daten sind für 8 mit einer pyramidalen C3v,-für 43 mit einer ebensolchen Cs-und für 44 mit einer flexiblen, helicalen C1-Struktur vereinbar. Weiterhin läßt sich 8 in sein rasch invertierendes pyramidales Anion 11 und das sehr wahrscheinlich ebene Kation 9 überführen.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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