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1999 (1)
1996 (1)
1Author    W. Lübbe, W. PreetzRequires cookie*
 Title    undm-[(w-C4H9)4N][B6H5(CH2)2C6H4]  
 Abstract    Preparation, n B, 13C, 'H NM R Spectra and Vibrational Spectra o f 1,2-Xylylene-pentahydro-c/oso-hexaborate, cw-[B6H5(CH2)2C6H4]_ , and the Crystal Structures o f c/s-[P(C6H5)4][B 6H5(CIL,)2C6H4] and c/s-[(n-C4H9)4N ][B 6H5(CH2)2C6H4] 1,2-Xylylene-pentahydro-c/oso-hexaborat(1 -), ' By reaction of [B6H6]2-with u>,u/-dibromo-o-xylene in acetonitrile the 1,2-xylylene-pentahydro-c/oso-hexaborat, ds-[B 6H5(CH2)2C6H4]_ , is formed. The new ansa compound has been separated from excess [B6H6]2-and other reaction products by ion exchange chromatogra­ phy on diethylaminoethyl cellulose. The crystal structures of c/s-[P(C6H5)4][B6H5(CH2)2C6H4] (I) and as-[(n-C4H9)4N][B6H5(CH2)2C6H4] (II) have been determined by single crystal X-ray diffraction analysis: I is monoclinic, space group P 2 \/n with a = 13.715(5), b = 11.118(1) and c = 19.702(2) A, ß = 103.47(2)°; II is orthorhombic with a = 10.204(7), b = 13.352(4) and c = 20.824(8) A. The "B NMR spectrum confirms the structure with a hetero disubstituted octahedral B6 cage with local C2v symmetry. The l3C and 'H NMR spectra have been assigned in term of such a configuration. The IR and Raman spectra exhibit characteristic CH, BH, BC, B6 and arene vibrations. 
  Reference    Z. Naturforsch. 51b, 691—697 (1996); eingegangen am 25. August 1995 
  Published    1996 
  Keywords    H NMR Spectra, Vibrational Spectra, 13C NMR Spectra, 11B NMR Spectra 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0691.pdf 
 Identifier    ZNB-1996-51b-0691 
 Volume    51 
2Author    C. Drewes, W. PreetzRequires cookie*
 Title    Darstellung und spektroskopische Charakterisierung von Methylnitro  
 Abstract    -c/oso-hexaboraten sowie Kristallstrukturen von cis-(Ph4As)2[B6H4(CH3)(N02)],/ac-(Ph4As)2[B6H3(CH3)(N02)2] CH3CN und /ner-(Ph4P)2[B6H3 (CH3)(N 02)C 2] Synthesis and Spectroscopic Characterization o f Methylnitro-c/oso-hexaborates and Crystal Structures o f m -(P h 4 As)2 [B6H4 (CH3) (N 0 2)],/flc-(P h4A s)2 [B6H3(CH3)(N 0 2)2] • CH3CN and mer-(Ph4 P)2 [B6H3(CH3) (N 0 2)c2] Methylnitrotetrahydro-c/<m>-hexaborate(2-), Methyldinitr0trihydr0-c/as'0-hexab0rate( 
  Reference    Z. Naturforsch. 54b, 349—356 (1999); eingegangen am 11. November 1998 
  Published    1999 
  Keywords    ), Crystal Structure, 11B NMR Spectra, Vibrational Spectra 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-0349.pdf 
 Identifier    ZNB-1999-54b-0349 
 Volume    54