Synthesis and Structure of New [3]Silametallocenophanes of Group 8 Metals

The synthesis and characterization of new [3]­silametallocenophanes of the group 8 metals via salt elimination is presented. Thereby, new [3]­silaferrocenophanes as well as the first [3]­silametallocenophanes of the heavier metals ruthenium and osmium could be synthesized and characterized. Also, the first solid-state structure of a [3]­silaferrocenophane was determined by X-ray crystallographic analysis

Synthesis and Structure of New [3]Silametallocenophanes of Group 8 Metals

The synthesis and characterization of new [3]­silametallocenophanes of the group 8 metals via salt elimination is presented. Thereby, new [3]­silaferrocenophanes as well as the first [3]­silametallocenophanes of the heavier metals ruthenium and osmium could be synthesized and characterized. Also, the first solid-state structure of a [3]­silaferrocenophane was determined by X-ray crystallographic analysis

Structure and Reactivity of Distanna[2]metallocenophanes of Ruthenium and Osmium

We report the molecular structures of 1,1′-dilithiometallocenes of ruthenium and osmium. These compounds served as precursors for the synthesis and subsequent structural characterization of the first [2]­osmocenophanes with disilane and distannane bridges, as well as of a distanna[2]­ruthenocenophane. In addition, the insertion of sulfur and selenium into the Sn–Sn bridges was studied and it was observed that the presence of the Lewis base pmdta (<i>N</i>,<i>N</i>,<i>N</i>′,<i>N</i>″,<i>N</i>″-pentamethyldiethylenetriamine) dramatically accelerates the reaction

Tin-Bridged <i>ansa</i>-Metallocenes of the Late Transition Metals Cobalt and Nickel: Preparation, Molecular and Electronic Structures, and Redox Chemistry

Using the flytrap approach, paramagnetic <i>ansa</i>-metallocenes of the late transition metals cobalt and nickel containing a tetra-<i>tert</i>-butyldistannane bridge have been prepared. The complexes were identified using a combination of analytical methods (NMR, EPR, cyclic voltammetry, and X-ray crystallography) and further converted to their corresponding cations by one-electron oxidation with ferrocenium hexafluorophosphate. Spectral and structural analyses of the ionic products are consistent with metal-based oxidations

Tin-Bridged <i>ansa</i>-Metallocenes of the Late Transition Metals Cobalt and Nickel: Preparation, Molecular and Electronic Structures, and Redox Chemistry

Using the flytrap approach, paramagnetic <i>ansa</i>-metallocenes of the late transition metals cobalt and nickel containing a tetra-<i>tert</i>-butyldistannane bridge have been prepared. The complexes were identified using a combination of analytical methods (NMR, EPR, cyclic voltammetry, and X-ray crystallography) and further converted to their corresponding cations by one-electron oxidation with ferrocenium hexafluorophosphate. Spectral and structural analyses of the ionic products are consistent with metal-based oxidations