18 research outputs found

    Nuclear magnetic resonance data of C6H4ClNSe2

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    CONDUCTING SN POLYMERS WITH INTEGRATED ORGANIC GROUPS

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    Des polymĂšres composĂ©s d'une part d'unitĂ©s soufre-azote, d'autre part de groupes bifonctionnels hĂ©tĂ©rocycliques, sont synthĂ©tisĂ©s par dĂ©composition de la liaison Si-N. On obtient tous les composĂ©s avec un bon rendement dans la plupart des cas comme une substance fortement colorĂ©e ou noire qui est insoluble dans des solvants organiques usuels. Les polymĂšres non traitĂ©s montrent une conductibilitĂ© Ă©lectrique entre 5.10-16 et 5.10-5 Ohm-1. GĂ©nĂ©ralement la conductibilitĂ© des polymĂšres peut-ĂȘtre augmentĂ©e par oxydation du matĂ©riau au moyen d'accepteurs comme par exemple l'iode.Polymers consisting of alternating sulfur nitrogen moieties and bifunctional heterocyclic groups are prepared via Si - N bond cleavage. All compounds are obtained in good yields as highly coloured or black materials which are insoluble in common organic solvents. The pristine materials show conductivities of approximately 5.10-16 - 5.10-5 Ohm-1 cm-1. In most cases higher conductivities can be achieved by doping the samples with acceptors, e.g. iodine

    Acyclic, Cyclic and Polycyclic Pn-Ligands

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    Within the coordination sphere of 10 and 12 to 16 electron LnM transition-metal complex fragments P2 to P6, P8, and P10 have been stabilized as acyclic, cyclic, and polycyclic Pn ligands

    Cyclo-As₈ as Complex Ligand

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    The arsenic analogue of cyclooctatetraenecyclo-As8 can be stabilized as a strongly distorted, puckered eight-membered ring in a complex of niobium (1; each Nb atom also bears a 1,3-di-tert-butylcyclopentadienyl ligand). Complex 1 reacts with [Cr(CO)5(thf)] to form a trinuclear Nb2Cr cluster

    Structure and Reactivity of η5-Thiacyclohexadienyl-1-oxide Complexes of Chromium

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    Weber L, Vehreschild-Yzermann D, KrĂŒger C, WolmershĂ€user G. Struktur und ReaktivitĂ€t von η5-Thiacyclohexadienyl-1-oxid-chrom-Komplexen. Zeitschrift fĂŒr Naturforschung. B. 1981;36(2):198-204
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