Edgar Niecke

N-trimethylsilyl-trichlorphosphinimin

Bei Wahl geeigneter Reaktionsbedingungen fur den Syntheseweg von Dichlorcyclophosphazenen aus Li-bis-[trimethylsilyl]-amid (I) und PCl5 (II) gelingt es, die Stufe der flussigen Titelverbindung (III) abzufangen.

Synthesis and Properties of N-Silylated Amino-Fluoroarsines

Abstract Aminofluoroarsines of the type ASFn (N(R)SiMe3)3-n (R[dbnd]SiMe3, t-Bu; n[dbnd]2,1) are prepared by the reaction of arsenic trifluoride and the corresponding lithium-silylamines, LiN(R)SiMe3. While AsF(N(SiMe3)2)2 decomposes at 150°C eliminating Me3SiF to give the fourmembered ring compound, ((Me3Si)2 NAsNSiMe3)2 AsF (N(t-Bu)SiMe3)2 reacts at about 22°0 C in a rather complex way.

Schwingungsspektren und Thermodynamische Funktionen von PF3, PCl3, PBr3, P J3, PF2Cl, PF2Br, PF2J, PFCl2, PFBr2, PCl2Br, PCl2J, PClBr2, PClJ2, PBrJ2, PBr2J, PFClBr, AsCl2Br und AsClBr2

The complete Raman and infrared spectra of PF2Cl, PF2Br, PFCl2 and PFBr2 are reported. The frequency data for several mixed phosphorus and arsenic halides (see title) given in the literature are revised and completed. Assignments are made for all spectra. Thermodynamic functions in the temperature range 200—2000 °K are calculated for all molecules, assuming the harmonic oscillator — rigid rotator approximation.