Halbsandwichkomplex des Chroms mit dem Trifluormethylisocyanid-Liganden

Halfsandwich Complexes of Chromium with the Trifluoromethyl Isocyanide Ligand The synthesis and properties of the halfsandwich complexes [η⁶-1,3,5-C₆H₃(CH₃)₃]Cr(CO)₂(CNCF₃), [η⁶-1,3,5-C₆H₃(CH₃)₃]Cr(CO)(CNCH₃)(CNCF₃) und [η⁶-1,3,5-C₆H₃(CH₃)₃]Cr(CNCF₃)₃ is reported. The vibrational spectroscopic data proof the strong π accepting character of the trifluoromethyl isocyanide ligand.     

Funktionalkalküle für abgeschlossene lineare Operatoren in Banachräumen

The theory of A-scalar and generalized scalar operators of Colojoara and Foias [7] is generalized to unbounded closed operators. A spectral mapping theorem is proved for the (local) spectrum. Generalized scalar operators admit a calculus for, the C-functions on the C-manifold. B(C), the C-functions onC, which are bounded with all derivatives, is an other admissible algebra. If (T) is contained in a generalized circle, characterisations as in [7] and explicit expressions for the C^m(K)- and the B^m(R)-calculus are obtained.