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1995 (1)
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1Author    Hanns-Dieter AmbergerRequires cookie*
 Title    Präparation von Brom-Elpasolithen für optische Untersuchungen The Electronic Structure of Highly Symmetrical Compounds of the f-Elements, XIV [1] The Preparation of Bromo-Elpasolites for Optical Measurements  
  Reference    Z. Naturforsch. 35b, 507—508 (1980); eingegangen am 31. Dezember 1979 
  Published    1980 
  Keywords    Synthesis, Electronic Raman Spectra, Crystal Field Calculations 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-0507.pdf 
 Identifier    ZNB-1980-35b-0507 
 Volume    35 
2Author    Svend Sievertsen, Lutz Galich, Heiner HomborgRequires cookie*
 Abstract    l e c t r o n i c R a m a n S p e c tr a o f a L o w -S p in F e r a P o r p h y r i n a n d R e e x a m in a tio n o f th e V ib r a t i o n a l S p e c tr a o f K 3[F e (C N)6] a n d [F e (C 5H 5)2]B F4 The resonance Raman spectra of (nBu4N)[Fe(CN)2TPP] (("BiitN): tetra(n-butyl)ammonium; TPP: m-tetraphenylporphyrin), K3 [Fe(CN)6] and [Fe(C5H5)2]BF4 have been investigated. A molec­ ular electronic Raman (ER) effect at 545 cm"1 is observed for (nBu4N)[Fe(CN)2TPP]. The transi­ tion occurs between lower 'TV' and upper 'Tg" level of the spin-orbit split ground state assuming pseudo-octahedral symmetry. In contrast to earlier studies no ER effect is detected for K3[Fe(CN)6] and [Fe(C5H5)2]BF4. For Raman shifts < 800 cm-1 only one strong Raman line is observed for [Fe(C5H5)2]BF4 at 311 cm-1, assigned to the iron ring stretch designated by u4 (aig in D5(j). Due to a phase transition of K3[Fe(CN)6], two additional strong vibrational lines at 329 and 352 cm-1 appear in the Raman spectrum taken at 10 K. Their intensities show A "term" behaviour of the resonance Raman effect with overtones and combinations for both lines. These are components of the vibronic combinations with the i/6, vi, and i/g modes (tiu in Oh) in the IR spectra, too. 
  Reference    Z. Naturforsch. 50a, 881—887 (1995); received May 26 1995 
  Published    1995 
  Keywords    Di(cyano)-m-tetraphenylporphinatoferrate(III), Hexacyanoferrate(III), Ferricenium, Electronic Raman Spectra, Vibrational Spectra 
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 TEI-XML for    default:Reihe_A/50/ZNA-1995-50a-0881.pdf 
 Identifier    ZNA-1995-50a-0881 
 Volume    50 
3Author    M. Ohsen, Safarpour Haghighi, Heiner HomborgRequires cookie*
 Title    Darstellung und Eigenschaften von Bis(phthalocyaninato)lanthanaten und -ceraten Preparation and Properties o f Bis(phthalocyaninato)lanthanates and -cerates  
 Abstract    High yields of bisphthalocyaninates of lanthanum and cerium have been obtained in the strongly exothermic reaction of the dehydrated lanthanoid acetates with molten 1,2-di-cyanobenzene in the presence of potassium hydroxide or methylate. Salts of the type (cat)[M(Pc(2-))-,] (M = La, Ce) with different cations (cat+ = K. Bu4N, PNP. TDOA) have been isolated. The corresponding "Hydrogen salts" are obtained by thermal decomposition of (Bu4N)[M(Pc(2-))-,] at T > 350 C. The dimeric structure is confirmed by negative fast atom bombardement mass spectra. The redox properties have been investigated by cyclovoltam-metry and UV, VIS, MIR, FIR and resonance Raman (RR) spectra are reported. Electronic transitions between 2000 and 3000 cm 1 are observed in the low temperature RR spectra of (Bu4N)[Ce(Pc(2-))^] being RR enhanced at 470 nm. From the assignment to the higher transi­ tions within the symmetry split 5F5/2, :F7 manifolds of the f1 ground state of Ce3+ the crystal field parameters f4f = 610.5, B40 = 242.2 and B60 = 4.1 cm-1 have been determined. 
  Reference    Z. Naturforsch. 46b, 1641—1649 (1991); eingegangen am 18. Juni 1991 
  Published    1991 
  Keywords    Bis(phthalocyaninato)lanthanates Bis(phthalocyaninato)cerates, Vibrational Spectra, UV-VIS Spectra, Electronic Raman Spectra 
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 TEI-XML for    default:Reihe_B/46/ZNB-1991-46b-1641.pdf 
 Identifier    ZNB-1991-46b-1641 
 Volume    46