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1982 (1)
1979 (1)
1Author    Hartmut MaischRequires cookie*
 Title    Die Stabilisierung von P(NH2)Hal2 (Hai = Cl, Br, I) und P(NHMe)2G als Komplexliganden  
 Abstract    The Stabilisation of P(NH2)Hal2 (Hal = Cl, Br, I) and P(NHMe)2Cl as Complex Ligands The phosphanes P(NH2)Hal2 and P(NHMe)2Cl are stabilised as ligands in (CO)5MoP(NH2)Hal2 [Hai = Cl (2), Br (3), I (4)] and (CO)5MoP(NHMe)2Cl (10) by reactions of (CO)5MoP(NH2)3 (1) with HHal or of (CO)5MoP(NHMe)3 (8) with HCl, respectively. 4 decomposes at room temperature and reacts with i-BuNH2 to give, (CO)5MOP(NH-<-BU)2NH2 (6). 1 and HI form (CO)5MoPI3. 3 can also be prepared from 2 with HBr, 4 from 2 and 3 with HBr and HI, respectively. The reactions of 2-4 with NR3 produce polymers, whereas the reaction of 3 with pyridine leads to (COjsMoNCsHs. The mixtures (CO)5MoP(NHMe)Br2/(CO)5MoPBr3 and (CO)5MoP(NH-t-Pr)2Cl/ (CO)5MoP(NH-i-Pr)Cl2 are isolated from reactions of 8 with HBr and of 9 with HI, and 9 reacts with HBr to give (CO)sMoPBr3. (CO)sMoP(NHMe)I2 is formed in small amounts by the reaction of 8 with HI, the main product is an insoluble solid, which is probably the impure intermediate [(CO)5MoP(NHMe)(NH2Me)2] 2 +2I-. Reaction of 10 with NEt3 leads to the formation of the dinuclear complex 12 in which the new diazadiphosphetidine [MeNHP-NMe]2 functions as a bridging ligand between two (CO)sMo units. 
  Reference    (Z. Naturforsch. 37b, 61—67 [1982]; eingegangen am 1. Oktober 1981) 
  Published    1982 
  Keywords    Ligand Reactions, Hydrogen Halides, Phosphanes 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0061.pdf 
 Identifier    ZNB-1982-37b-0061 
 Volume    37 
2Author    Franz Kalchsclimid, Erwin MayerRequires cookie*
 Title    Bildung von Alkylcarbenium-Ionen im System Aluminium-(Gallium-)halogenid/Halogenwasserstoff Formation of Alkylcarbenium Ions in the System Aluminium (Gallium) Halide/ Hydrogen Halide  
 Abstract    The tert-butyl cation is formed in the reaction of tert-BuCl with AICI3 or GaCl3 in anhydrous liquid HCl as a solvent, or of £ert-BuBr with AlBr3 in HBr. At — 30 °C solutions of [C(CH3)3 + ] are stable. At room temperature very slow decomposition occurs over months. In the systems BCI3/HCI, InCl3/HCl and BBr3/HBr no formation of [C(CH3)3+] from the corresponding £erZ-butyl halide was observed. The tert-'Amy\ cation can be stabilized only in AlBr3/HBr. The iso-propyl cation is not stable in any of the systems investigated. The ability of the Lewis acids employed to form carbenium ions corresponds with their catalytic activity in Friedel-Crafts alkylations. 
  Reference    Z. Naturforsch. 34b, 548—552 (1979); eingegangen am 5. Januar 1979 
  Published    1979 
  Keywords    Alkylcarbenium Ions, ferZ-Butyl Cation, Aluminium Halides, Hydrogen Halides, NMR 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0548.pdf 
 Identifier    ZNB-1979-34b-0548 
 Volume    34