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1985 (2)
1976 (1)
1975 (1)
1Author    Hg SchnöckelRequires cookie*
 Title    IR Absorption of A1C1 and AlBr in Solid Noble Gases  
 Abstract    The vibrational frequency of A1 35 C1 in solid neon and argon has been measured to be 470 cm-i and 455 cm-1 . The 3 5C1/ 37 C1 isotopic splitting is 5.4 ± 0.2 cm -1 in argon matrix. The IR absorption of AlBr has been recorded in neon, argon and nitrogen matrices (370, 357, 349 cm" 1). In solid argon the frequency shift due to 81 Br/ 79 Br isotopes could be re-solved (0.95 ±0.2 cm" 1). The fundamental v3 of monomeric AlBr3 is observed at 508.4 cm -1 in an argon matrix. 
  Reference    (Z. Naturforsch. 31b, 1291—1292 [1976]; eingegangen am 15. Juni 1976) 
  Published    1976 
  Keywords    Aluminium Chloride, Aluminium Bromide, IR, Matrix Isolation 
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 TEI-XML for    default:Reihe_B/31/ZNB-1976-31b-1291_n.pdf 
 Identifier    ZNB-1976-31b-1291_n 
 Volume    31 
2Author    Wolfgang Gerhartz, Friedrich-Wilhelm Grevels, WernerE. Klotzbücher, ErnstA. Koerner Von Gustorf, RobinN. PerutzRequires cookie*
 Title    Low-Temperature Matrix Photochemistry of (f/ 4 -Diene)tetracarbonylchromium Complexes  
 Abstract    Photolysis of (^ 4 -diene)Cr(CO) 4 complexes (diene = butadiene, trans,trans-2,4-hexadiene, 2,3-dimethylbutadiene) in Ar, N 2 , and CO matrices at 10-12 K was monitored by infrared and UV-Vis spectroscopy. In argon and dinitrogen matrices loss of CO ist the predominant photoreaction. The resulting fac-(rf-diene)Cr(CO) 3 can take up N 2 from the matrix to form (?7 4 -diene)Cr(CO) 3 (N 2). In the case of the hexadiene complex this process requires matrix an-nealing subsequent to photolytic loss of CO. Photolysis in CO matrices, by contrast, results in stepwise displacement of the diene ligand, yielding (/7 2 -diene)Cr(CO) 5 and ultimately Cr(CO) 6 . 
  Reference    Z. Naturforsch. 40b, 518—523 (1985); received November 13 1984 
  Published    1985 
  Keywords    Matrix Isolation, Photochemistry, Carbonylchromium Diene Complexes, IR Spectra 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0518.pdf 
 Identifier    ZNB-1985-40b-0518 
 Volume    40 
3Author    Mohamed Yalpani, WernerE. KlotzbücherRequires cookie*
 Title    Transformations in Thin Solid Layers: The Reversible Polymerization-Depolymerization of 2,6-Di-n-propyl- l,3>5,7-tetraoxa-2,6-dibora-4,8-octalindiones at Low Temperatures  
 Abstract    The course of Aggregation of molecules of the title compound (lb) through different, spectro-scopically discernible and chemically identifiable forms of associations could be followed by matrix isolation and thin film infrared and UV-visible spectroscopy. It was found that molecules of lb in thin films form clusters which at low temperatures interact weakly, probably through the carbonyl oxygens of one and the boron atoms of the neighbouring molecules. On warming to 260 K this association gradually takes the form of more defined chelate bonds, probably with ordered three-dimensional intermolecular structures. Above this temperature spontaneous for-mation of crystallites of the previously reported 'hot' and 'cold' modifications was observed. Studies with films of varying thickness indicate an interdependence of crystallite size and lattice energies. 
  Reference    Z. Naturforsch. 40b, 222—228 (1985); received September 24 1984 
  Published    1985 
  Keywords    Solid State Reaction, Matrix Isolation, Aggregation, Phase Transformation, Microcrystals 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0222.pdf 
 Identifier    ZNB-1985-40b-0222 
 Volume    40 
4Author    F. K., A. M.Requires cookie*
 Title    Matrix Isolation and Isotopic Substitution Tech­ nique: Germanium Isotopic Splitting P attern of the v3(F2) Mode of Ge35Cl4 and Chlorine Isotopic Splitting P attern of 74Ge35Clw37Cl4-n  
 Abstract    The matrix isolation spectrum of germa­ nium tetrachloride in the region of the v3(F2) vibration has been measured. Applying the isotopic substitution technique the spectrum of the normal sample could be interpreted. The frequencies of the different isotopic species have been assigned. 
  Reference    (Z. Naturforsch. 30b, 456—457 [1975]; eingegangen am 24. Februar 1975) 
  Published    1975 
  Keywords    Matrix Isolation, Isotopic Substitution Technique, Germanium Tetrachloride, Isotopic Splitting Pattern, IR Spectra 
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 TEI-XML for    default:Reihe_B/30/ZNB-1975-30b-0456_n.pdf 
 Identifier    ZNB-1975-30b-0456_n 
 Volume    30