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'Charge Transfer' in keywords Facet   Publication Year 1998  [X]
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1998[X]
1Author    Horst Kunkely, AmD. VoglerRequires cookie*
 Title    Photoreactivity of Titanocene Pentasulfide  
 Abstract    The electronic spectrum o f Cp2TiSs shows a long-wavelength absorption at Am ax = 492 nm which is assigned to the lowest-energy S52~ ^ T i IV ligand-to-metal charge transfer (L M C T) transition. The photolysis o f the complex in C H 2CI2 leads to the formation o f Cp2T iC l2 and elemental sulfur. It is suggested that L M C T excitation initiates a reductive elimination with the extrusion o f S5 while the reduced titanocene is reoxidized by the solvent. 
  Reference    Z. Naturforsch. 53b, 224—226 (1998); received December 12 1997 
  Published    1998 
  Keywords    Charge Transfer, Titanium Complexes, Sulfide Complexes, Photochemistry 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-0224.pdf 
 Identifier    ZNB-1998-53b-0224 
 Volume    53 
2Author    Horst Kunkely, Arad VoglerRequires cookie*
 Title    Photooxidation of Dicyanoaurate(I) Induced by Metal-to-Ligand Charge Transfer Excitation  
 Abstract    The irradiation of [Au(CN)2]_ in oxygen-saturated acetonitrile leads to photooxidation of Au(I). In the presence of additional chloride [AutCN^CL]-is formed with < /> = 0 .5 x 1 0 -4 at Ajrr = 2 5 4 nm. It is assumed that [Au(CN)2]~ in its metal-to-ligand charge transfer state undergoes an excited state electron transfer to oxygen in the primary photochemical step. 
  Reference    Z. Naturforsch. 53b, 853—855 (1998); received April 12 1998 
  Published    1998 
  Keywords    Photochemistry, Charge Transfer, Gold Complexes, Cyanide Complexes 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-0853.pdf 
 Identifier    ZNB-1998-53b-0853 
 Volume    53 
3Author    Horst Kunkely, Arnd VoglerRequires cookie*
 Title    Photochemical Reductive Elimination of Nitrogen from Triazidogallium(III). Generation of Luminescent Gallium(I)  
 Abstract    The irradiation of Ga(N3)3 in CH3CN leads to a reductive elimination of nitrogen according to the equation Gam(N3)3 —► Ga*N3 + 3N2 (0 = 0.002 at Ain = 254 nm). Ga+ in CH3CN is characterized by its absorption (Amax = 298 nm) and emission (Amax = 475 nm) spectrum. 
  Reference    Z. Naturforsch. 53b, 1180—1182 (1998); received July 9 1998 
  Published    1998 
  Keywords    Photochemistry, Charge Transfer, Gallium Complexes, Azide Complexes 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-1180.pdf 
 Identifier    ZNB-1998-53b-1180 
 Volume    53 
4Author    M. Jánossy, P. MezeiRequires cookie*
 Title    Excitation of the 210 nm Zn II Line in a Hollow Cathode He-Ne-Zn Discharge  
 Abstract    In a hollow cathode He-Zn discharge it was observed that addition of Ne stops laser oscillation at the 492.4 nm Zn II line and increases significantly the spontaneous intensity at the 210 nm Zn II line, which originates from the 4d 2 D 5/2 lower level of the laser transition. Based on a rate equation model, the cross-section of the Ne ion-Zn atom charge transfer collisions populating the 4d 2 D 5/2 level was determined. The cross-section 3.5x 10 -15 cm 2 found by us is in acceptable agreement with the value 2.3x 10" 15 cm 2 reported in the literature. This high cross-section together with existing lower level depopulation points to the possibility of obtaining laser oscillation at 210 nm in a Ne-Zn discharge. 
  Reference    Z. Naturforsch. 53a, 955—959 (1998); received April 6 1998 
  Published    1998 
  Keywords    Gas Lasers, Laser Excitation, Charge Transfer, Glow Discharges, Sputtering 
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 TEI-XML for    default:Reihe_A/53/ZNA-1998-53a-0955.pdf 
 Identifier    ZNA-1998-53a-0955 
 Volume    53