118 research outputs found

    Reactivity of a Sterical Flexible Pentabenzylcyclopentadienyl Samarocene

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    Reactivity studies of the classical divalent lanthanide compound [CpBz5^{Bz5}2_{2}Sm] (CpBz5^{Bz5} = pentabenzylcyclopentadienyl-anion) towards diphenyl dichalcogenides and d-element carbonyl complexes led to remarkable results. In the compounds obtained, a different number of Sm-C(phenyl) interactions and differently oriented benzyl groups were observed, suggesting—despite the preference of these interactions in [CpBz5^{Bz5}2_{2}Sm] described in previous studies—a flexible orientation of the benzyl groups and thus a variable steric shielding of the metal center by the ligand. The obtained compounds are either present as monometallic complexes (reduction of the dichalcogenides) or tetrametallic bridged compounds in the case of the d/f-element carbonyl complexes

    Das Wissen der Systeme: über Niklas Luhmanns Erkenntnis als Konstruktion

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    Paradoxale Kontingenzbewältigung: zur Ästhetik der Stille in der populären Musik

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    Objektivität, Kontingenz und Theorie in historischer Perspektive

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    "At the heart of it there's a melody": the astonishing Renaissance of Bill Fay

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    Brexit music: studies in alienation by Sleaford Mods and Kate Tempest

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    Historicising the popular: a survey

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