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'Vibrational spectra' in keywords Facet   Publication Year 1995  [X]
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1Author    A. Franken, W. PreetzRequires cookie*
 Title    Darstellung, n B-NMR-und Schwingungsspektren  
 Abstract    von Am inohexahydro-closo-hexaborat(l-), [B6H6(NH2)]~ sowie Kristallstruktur von Cs[B6H6(NH2)]*H 20 P rep aratio n , n B N M R and V ibrational Spectra of A m in o h e x a h y d ro -c lo so -h ex a b o ra te (l-), [B6H 6(N H 2)]' , and the C rystal S tructure of Cs[B6H 6(N H 2)] • H 20 By reduction of [B6H5(N0 2)]2_ with Fe2+ in aqueous alkaline solution [B6H6(NH2)]~ is formed. The compound has been separated by extraction with dichloromethane in the presence of tetrabutylammoniumbromid and precipitated from the organic phase by adding CsCH3COO/C2H5OH. The Crystal structure of Cs[B6H6(NH2)] H20 has been determined by single crystal X-ray diffraction analysis; monoclinic space group C2 with a = 22.1075(14), b = 6.491(2), c = 5.9570(4) Ä, ß = 100.168(6)°. The UB NMR spectrum is consistent with a mono-hetero-substituted octahedral B6 cage with local C4v symmetry. The IR and Raman spectra exhibit characteristic N -H , B -H and B6 vibrations. 
  Reference    (Z. Naturforsch. 50b, 11—14 [1995]; eingegangen am 9. August 1994) 
  Published    1995 
  Keywords    Aminohexahydro-closo-hexaborate(l-), Crystal Structure, UB NMR Spectra, Vibrational Spectra 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-0011.pdf 
 Identifier    ZNB-1995-50b-0011 
 Volume    50 
2Author    Abdel-Fattah Shihada, Frank WellerbRequires cookie*
 Title    Synthesis, Vibrational Spectra, Mass Spectrum and Crystal Structure of Tri-n-butyltin Diphenylphosphinate (n-Bu)3S n 0 2PPh2  
 Abstract    Tri-/?-butyltin diphenylphosphinate (/?-Bu)3S n 0 2PPh2 has been synthesized by the reaction o f («-B u 3Sn)20 with Ph2POCl in toluene. An X-ray diffraction study of (/?-Bu3) S n 0 2PPh2 shows that the structure is polymeric and consists of helical chains in which (/7-Bu)3Sn groups are linked by O-P-O bridges. The geometry about tin is trigonal bipyramidal, with «-butyl groups in equatorial positions and an axial O -S n -O angle of 176.2 (2)°. IR and Raman spectra of («-B u)3SnÖ2PPh2 are given and assigned. The mass spectrum is reported and discussed. 
  Reference    Z. Naturforsch. 50b, 1343—1347 (1995); received D ecem ber 12 1994 
  Published    1995 
  Keywords    Crystal Structure, Vibrational Spectra, Mass Spectrum, Tri-n-butyltin Diphenylphosphinate 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-1343.pdf 
 Identifier    ZNB-1995-50b-1343 
 Volume    50 
3Author    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