Koordination und Reaktivität von Sulfinylimiden RNSO in Cyclopentadienyldicarbonylmangan‐Komplexen

Coordination and Reactivity of Sulfinylimides RNSO in Cyclopentadienyldicarbonylmanganese Complexes The coordination behaviour of sulfinylimides RNSO (R = SiMe₃, Ph) towards CpMn(CO)₃ (Cp = C₅H₅, C₅H₄CH₃) has been studied. Under total exclusion of water the substitution products CpMn(CO)₂{S(O)NR} ( 2 a , b , 2 ′ a , b ) with μ¹‐S‐linkage are formed. In the presence of water, however, the SO₂ complexes 3 , 3 ′ as iminofree hydrolysis products are obtained. There are only spectroscopic indications for the directed hydrolytic conversion of the silyl derivatives 2 a , 2 ′ a into the unstable HNSO complexes 4 , 4 ′ by cleavage of the Si–N‐bond and retention of the cumulene moiety. The molecular structures of π‐C₅H₅Mn(CO)₂{S(O)NSiMe₃} ( 2 a ) and π‐C₅H₄CH₃Mn(CO)₂SO₂ ( 3 ′) were elucidated by single crystal X‐ray analyses.     

Synthesis und Reaktivität von Dimethylaminoalkylidenaminooxy-arsinen

Synthesis and Reactivity of Dimethylaminoalkylideneaminooxiarsines The reactions of As[N(CH₃)₂]₃ with oximes result in the formation of the oximates [(CH₃)₂N]₂AsONCRR′, (CH₃)₂N As(ONCRR′)₂ and As(ONCRR′)₃. The eleavage of the As-N-bond with alcohols, thiols and diols are described. The reactions of CH₃As[N(CH₃)₂]ONCRR′ with water, amine and alcohols are examined. IR-and ¹H-NMR-spectral data are presented.     

Zur Synthese und Reaktivität Triflatsubstituierter Siloxanderivate

Synthesis and Reactivity of Triflate Substituted Siloxane Derivatives The reaction of amino substituted siloxane derivatives with trifluoromethanesulfonic acid leads under elimination of ammonium trifluoromethanesulfonate to the formation of siloxanyl triflates. The compounds are characterised by NMR-spectroscopy (²⁹Si, ¹³C, ¹H). The synthetic potential of these siloxanes is shown on selected examples. One interesting point of view is the synthesis of silicon containing oligo- and polymeres, in which siloxane and silylenealkine units are combined.