Fragmentierung des schwefeldiimidsystems in tBu2PN=S=NPtBu2 an dreikernigen osmiumclustern. Synthese,feströrperstruktur und dynamische eigenschaften von Os3(CO)11[PtBu2(NH2)] und HOs3(CO)9PtBu2N(H)S] |
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Authors: | W Ehrenreich M Herberhold G Süss-Fink H-P Klein U Thewalt |
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Institution: | Laboratorium für Anorganische Chemie der Universität Bayreuth, Universitätsstrasse 30, D-8580 Bayreuth Bundesrepublik Deutschland;Sektion für Röntgen- und Elektronenbeugung der Universität Ulm, Oberer Eselsberg, D-7900 Ulm Bundesrepublik Deutschland |
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Abstract: | The phosphino-substituted sulphur diimide, S(NPtBu2)2, reacts with the trinuclear osmium clusters Os3(CO)11(NCMe) and H2Os3(CO)10 with cleavage of one of the NS bonds to give the cluster compounds Os3(CO)11PtBu2(NH2)] (I) and HOs3(CO)9PtBu2N(H)S] (II), respectively. In the solid state, I contains a closed Os3 triangle with the phosphine ligand bonded equatorially to an osmium atom through the phosphorus. In solution intramolecular dynamic processes are observed which are explained by carbonyl migration and pseudoration mechanisms. The osmium cluster II, in the solid state, forms an irregular Os3 triangle which is bridged by a PtBu2N(H)S] system, and the longest edge of which is bridged by a μ2-hydride. In contrast to I, molecule II is relatively rigid in solution; only pseudorotations are observed as dynamic phenomena. |
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Keywords: | Author to whom all correspondence should be addressed |
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