| | 1 | Author
| W. Lübbe, W. Preetz | Requires cookie* | | | Title
| Darstellung, n B-, 13C-, ^ -N M R -und Schwingungsspektren von ji-Pentamethylen-bis  | | | | Abstract
| hexahydro-c/oso-hexaborat, [B6H6(CH2)5B6H6]2', und ji-Hexamethylen-bis-hexahydro-c/oso-hexaborat, [B6H6(CH2)6B6H6]2 Preparation, n B, l3C, 'H NMR and Vibrational Spectra of /x-Pentamethylene-bis-hexahydro-c/oso-hexaborate, [B6H6(CH2)5B6H6]2_, and /i-Hexamethylene-bis-hexahydro-c/<m>-hexaborate, [BftH ötC^^BftH ö]2- /i-Pentamethylene-bis-hexahydro-c/o5<7-hexaborate(2-), /u-Hexamethylene-bis-hexahydro-c/cw-hexaborate(2-), ' | | | |
Reference
| Z. Naturforsch. 51b, 359—362 (1996); eingegangen am 7. September 1995 | | | |
Published
| 1996 | | | |
Keywords
| H NMR Spectra, l3C NMR Spectra, "B NMR Spectra | | | |
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| default:Reihe_B/51/ZNB-1996-51b-0359.pdf | | | | Identifier
| ZNB-1996-51b-0359 | | | | Volume
| 51 | |
| 2 | Author
| W. Lübbe, W. Preetz | Requires cookie* | | | Title
| Darstellung, n B -,13C -,1 H-NMR-und Schwingungsspektren von ja-Dimethylen-bis | | | | Abstract
| hexahydro-c/oso-hexaborat, [B6H6(CH2)2B6H6]2', sowie Kristallstrukturen von [As(C6H5)4]2[B6H6(CH2)2B6H6] [(CH3)2CO] und [P(C6H5)4]2[B6H6(CH2)2B6H6][C 2H5OH] Preparation, " B , 13C, 'H NM R and Vibrational Spectra of /i-Dimethylene-bis-hexahydro-c/oso-hexaborate, [BeHöCCI^hBöHö]2" , and the Crystal Structures o f [As(C6H5)4]t[B 6H6(CH2)2B 6H6] [(CH3)?CO] and [P(C6H5)4]2 [B6H6(CH2)2B6H6] • [C2H5OH] ^-Dimethylene-bis-hexahydro-c/as'o-hexaborate(2- By reaction of [B6H6]2~ with dibromoethane in acetonitrile /j-dimethylene-bis-hexa-hydro-c/oso-hexaborate(2-), JBfiHötCfLbBfcHö]2 -, is formed. The compound was sepa rated from excess [B6H6]'_ by ion exchange chromatography on diethylaminoethyl cellulose. The crystal structures of [AstCfiH.^MBöHötCHbhBöHftl-IXCI-L^CO] (I) and [P(Cf,H5)4]2[BftH^CHT^BftHf,]■ [C2H5OH] (II) have been determined by single crystal X-ray ana lysis: I is triclinic, space group PI with a = 10.264(2), b = 13.804(2) and c = 20.242(2) A, a = 97.857(10)°, ß = 92.734(11)° and 7 = 103.024(13)°; II is monoclinic, space group P2iIn with a = 12.742(2), b = 7.532(2) and c = 26.887(3) Ä, ß = 95.765(10)°. The 11B NMR spectrum of this compound reveals the feature of monosubstituted octahedral B6 cages. The l3C NMR spectrum exhibits a triplet at 16.20 ppm with '7(C,H) = 120.4 Hz. In the 'H NMR spectrum a singulet at 0.72 ppm of the CH2-groups and two singulets at 1.72 and -4.95 ppm of the BH fragments are observed. The IR and Raman spectra exhibit strong CH stretching bands between 2908 and 2789 cm-1, BH stretching bands between 2463 and 2396 cm-1, and the BC stretching vibration at 1144 in the IR and at 1150 cm" 1 in the Raman spectrum. | | | |
Reference
| Z. Naturforsch. 51b, 363—369 (1996); eingegangen am 3. August 1995 | | | |
Published
| 1996 | | | |
Keywords
| ), Crystal Structure, 'H NMR Spectra, Vibrational Spectra, l3C NMR Spectra, "B NMR Spectra | | | |
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| default:Reihe_B/51/ZNB-1996-51b-0363.pdf | | | | Identifier
| ZNB-1996-51b-0363 | | | | Volume
| 51 | |
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