From a nanoparticular solid-state material to molecular organo-f-element-polyarsenides |
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Authors: | Niklas Reinfandt Adrian Hauser Luca Münzfeld Peter W Roesky |
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Institution: | Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 15, D-76131 Karlsruhe Germany, |
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Abstract: | A convenient pathway to new molecular organo-lanthanide-polyarsenides in general and to a f-element complex with the largest polyarsenide ligand in detail is reported. For this purpose, the activation of the solid state material As0nano (nanoscale gray arsenic) by the multi electron reducing agents K(18-crown-6)](Ln+II)2(μ-η6:η6-C6H6)] (Ln = La, Ce, Cp′′ = 1,3-bis(trimethylsilyl)cyclopentadienyl anion) and K(18-crown-6)]2(Ln+II)2(μ-η6:η6-C6H6)] (Ln = Ce, Nd) is shown. These non-classical divalent lanthanide compounds were used as three and four electron reducing agents where the product formation can be directed by variation of the applied reactant. The obtained Zintl anions As33−, As73−, and As144− were previously not accessible in molecular 4f-element chemistry. Additionally, the corresponding compounds with As144−-moieties represent the largest organo-lanthanide-polyarsenides known to date.Reaction of non-classical divalent lanthanide compounds with nanoparticulate gray arsenic via three- and four-electron reduction led to a series of new f-element polyarsenides, including the largest f-element polyarsenide known to date. |
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