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'IR spectra' in keywords Facet   Publication Year 1996  [X]
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1Author    M. Maeda, T. Ito, M. Hori, G. JohanssonRequires cookie*
 Title    The Structure of Zinc Chloride Complexes in Aqueous Solution  
 Abstract    The structure of zinc chloride complexes with different ratios of chloride to zinc, formed in concentrated ZnCl 2 aqueous solutions, were determined from large-angle X-ray scattering using concentrations of the chloride complexes estimated by complementary Raman spectroscopic mea-surements. The highest chloro complex, [ZnCl 4 ] 2 ~, is tetrahedral with a Zn-Cl bond length of 2.294(4) Ä. The trichloro complex, [ZnCl 3 ]~, which coordinates one water molecule, is pyramidal with the Cl-Zn-Cl angle 111°. The Zn-Cl and the Zn-H 2 0 bonds are 2.282(4) and 1.9 A, respec-tively. The two lower complexes, [ZnCl 2 ] and [ZnCl] + , cannot be separated by Raman spectra. o The average Zn-Cl distance in these complexes is 2.24 Ä, and the average Zn-H 2 Ö distance is 1.9 A. In [Zn(H 2 0) 6 ] 2+ the Zn-H 2 0 distance is 2.15 Ä. of zinc (II) chloride complexes; structure of hydrated non-complexed zinc (II) ion. 
  Reference    Z. Naturforsch. 51a, 63—70 (1996); received November 7 1995 
  Published    1996 
  Keywords    X-ray diffraction, Raman spectra, IR spectra, structures 
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 TEI-XML for    default:Reihe_A/51/ZNA-1996-51a-0063.pdf 
 Identifier    ZNA-1996-51a-0063 
 Volume    51 
2Author    Nickolia Lalioti3, JohnM. Tsangaris, ThF. Zafiropoulos, SpyrosP P ErlepesRequires cookie*
 Title    Binding of Cations to 4 f Metal Ions : Preparation and Properties of Lanthanide(III) Complexes Containing the Phenelzinium(l+) Cation as a Ligand  
 Abstract    Treatment o f Ln2(S 0 4)3 • nH 20 (Ln = La, Ce, Pr, Nd, Sm. Eu, Gd ; n -8, 9) with phenelzine dihydrogen sulfate, (phzH2) S 0 4, in 1 N H2S 0 4 yields polymeric complexes with the general formula [L n (S 0 4)2(H 20) 2(phzH)], which contain the phzH+ cation as a ligand. The compounds have been characterized by elem ental analyses, X-ray powder patterns, thermal methods, magnetic susceptibilities and spectroscopic (IR, Raman, electronic diffuse reflec­ tance and solid-state emission f -f spectra) studies. The prepared complexes most probably consist of 7-coordinated units, formed by four bridging bidentate sulfato groups, two terminal aqua m olecules and one cationic phzH+ ligand. 
  Reference    (Z. Naturforsch. 51b, 112 [1996]; received May 19 1995) 
  Published    1996 
  Keywords    Lanthanide(III) Complexes, Phenelzine Dihydrogen Sulfate, Cationic Ligands, IR Spectra 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0112.pdf 
 Identifier    ZNB-1996-51b-0112 
 Volume    51 
3Author    M. Ataullah Khan, Hum Aira RaeesRequires cookie*
 Title    Synthesis of a New bis-Harmine Selenide  
 Abstract    Harmine (1) upon refluxing with selenium dioxide in acetic acid for 15 hours yielded bis-harmine selenide (4) via the intermediates 2 and 3. 
  Reference    Z. Naturforsch. 51b, 1779—1780 (1996); received August 7 1996 
  Published    1996 
  Keywords    bis-Harmine Selenide, Harmine, 'H NMR Spectra, IR Spectra, El-Mass Spectra 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-1779.pdf 
 Identifier    ZNB-1996-51b-1779 
 Volume    51