Kationische Thionitrosyl-Komplexe des Chroms. Cationic Thionitrosyl Complexes of Chromium
نویسندگان
چکیده
Thionitrosyl Complexes, Nit rosy 1 Chromium Complexes A nitromethane solution of NS+PFe-, obtained in situ from N3S3CI3 and AgPF6 (1:3), reacts with benzene tricarbonyl chromium in acetonitrile solution to give the thionitrosylcontaining salt [Cr(NS)(NC-Me)s](PF6)2 (1)In the presence of Zerf-butyl isocyanide and Zn powder, 1 is reduced to [Cr(NS)(CN-CMe3)s]PF6 (3), while subsequent oxidation of 3 with either NOPF6 or AgPF6 leads to [Cr(NS)(CN-CMe3)5](PF6)2 (5). The thionitrosylcontaining salts 1, 3 and 5 are compared with the corresponding nitrosyl complexes.
منابع مشابه
The Electronic Structure of Closed Shell Metallocenes in the Ground State and in the Cationic Hole-States
The electronic structure of tne closed shell metallocenes bis(7r-cyclopentadienyl)magnesium (1), bisbenzene chromium (2), ferrocene (3) and cyclopentadienyl benzene manganese (4) has been studied in the ground state as well as in the low-lying cationic states. The computational framework is a semiempirical INDO Hamiltonian, the theoretical framework for the investigation of the cationic hole-st...
متن کاملCationic Immune Stimulating Complexes Containing Soluble Leishmania Antigens: Preparation, Characterization and in Vivo Immune Response Evaluation
Background: Cationic immune stimulating complexes (PLUSCOMs) are particulate antigen delivery systems. PLUSCOMs consist of cationic immunostimulatory complexes (ISCOMs) derivatives and are able to elicit in vivo T cell responses against an antigen. Objective: To evaluate the effects of PLUSCOMs containing Leishmaniamajor antigens (SLA) on the type of immune response generated in the murine mod...
متن کامل[M(II)([15]Krone-5)(L)2]-Komplexe - der Einfluß des Kronenetherhohlraums auf die Mobilität der Liganden L [M(II)([15]Crown-5)(L)2] Complexes - The Influence of the Crown Ether Cavity on the Mobility of the Ligands L
The mobility of coordinated methanol in the complex [Co(II)(Benzo[ 15]crown-5)(CH3OH)2] + was studied in nitromethane. The methanol exchange mechanism tends to an associative nature with an increasing amount of methanol in the solutions as can be deduced from the activation entropy. All activation data can be combined in an isokinetic relationship which is also valid for the respective complex ...
متن کاملGold(I)-Komplexe mit Aminliganden, II [1]. (Methylpyridin)-Komplexe von Gold(I) Gold(I) Complexes with Amine Ligands, II. Methylpyridine Complexes of Gold(I)
Gold(I) complexes of overall formula LAuCl (L = various methylpyridines) are non-con ducting in acetone. X-ray structure analyses show that the solid state structure of the cor responding complex 1 (L = 2-picoline) is molecular; the 3-picoline derivative 2 is however ionic (L2Au)+(AuCl2). 3-Picoline forms a molecular complex LAuC6F5 (3) and also the ionic (L2Au)+(SbF6)_ (4). Complexes 1, 2 an...
متن کاملRessourcen Management und Zugangskontrolle eines Vorabreservierungssystems
Diese Dissertation entstand im Rahmen eines DFG-Projektes an der TU-Dresden. Ausgehend von der allgemeinen Zielsetzung des Projektes, die eine komplexe Betrachtung der Thematik “Vorabreservierungen in verteilten Systemen” darstellt, werden zunächst grundlegende gemeinschaftliche Schwerpunktthemen dargestellt und diskutiert. Darauf aufbauend befaßt sich diese Arbeit insbesondere mit den speziell...
متن کامل