d/f-Polypnictides Derived by Non-Classical Ln2+ Compounds: Synthesis,Small Molecule Activation and Optical Properties |
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| Authors: | Niklas Reinfandt Nadine Michenfelder Dr Christoph Schoo Dr Ravi Yadav Stephan Reichl Prof Sergey N Konchenko Prof Dr Andreas N Unterreiner Prof Dr Manfred Scheer Prof Dr Peter W Roesky |
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| Institution: | 1. Institut für Anorganische Chemie, Karlsruher Institut für Technologie (KIT), Engesserstr. 15, Geb. 30.45, 76131 Karlsruhe, Germany;2. Institut für Physikalische Chemie, Karlsruher Institut für Technologie (KIT), Fritz-Haber-Weg 2, Geb. 30.44, 76131 Karlsruhe, Germany;3. Institut für Anorganische Chemie, Universität Regensburg, Universitätsstraße 31, 93040 Regensburg, Germany;4. Nikolaev Institute of Inorganic Chemistry SB RAS, Prosp. Lavrentieva 3, 630090 Novosibirsk, Russia |
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| Abstract: | Reduction chemistry induced by divalent lanthanides has been primarily focused on samarium so far. In light of the rich physical properties of the lanthanides, this limitation to one element is a drawback. Since molecular divalent compounds of almost all lanthanides have been available for some time, we used one known and two new non-classical reducing agents of the early lanthanides to establish a sophisticated reduction chemistry. As a result, six new d/f-polyphosphides or d/f-polyarsenides, K(18-crown-6)] Cp′′2Ln(E5)FeCp*] (Ln=La, Ce, Nd; E=P, As) were obtained. Their reactivity was studied by activation of P4, resulting in a selective expansion of the P5 rings. The obtained compounds K(18-crown-6)] Cp′′2Ln(P7)FeCp*] (Ln=La, Nd) are the first examples of an activation of P4 by a f-element-polypnictide complex. Additionally, the first systematic femtosecond (fs)-spectroscopy investigations of d/f-polypnictides are presented to showcase the advantages of having access to a broader series of lanthanide compounds. |
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| Keywords: | femtosecond spectroscopy lanthanides P4 activation polypnictides reduction |
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