ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Struktur von S-9,10-Dimethyl-1,3,5,7-tetraarsa-2,4,6,8-tetraoxaadamantan und 9,10-Diethyl-1,3,5,7-tetraarsa-2,4,6,8-tetraoxaadamantan (1996)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 622 (1996), S. 1097-1100 
    Details
    ISSN: 0044-2313
    Keywords: Organoarsoxane ; S-9,10-Dimethyl-1,3,5,7-tetraarsa-2,4,6,8-tetraoxaadamantane ; 9,10-Diethyl-1,3,5,7-tetraarsa-2,4,6,8-tetraoxaadamantane ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Structure of S-9,10-Dimethyl-1,3,5,7-tetraarsa-2,4,6,8-tetraoxaadamantane and 9,10-Diethyl-1,3,5,7-tetraarsa-2,4,6,8-tetraoxaadamantaneS-9,10-Dimethyl-1,3,5,7-tetraarsa-2,4,6,8-tetraoxaadamantane (1) and 9,10-diethyl-1,3,5,7-tetraarsa-2,4,6,8-tetraoxaadamantane (2) have been prepared by the reaction of propionic acid, propionic anhydride and butyric acid, butyric anhydride, respectively, with arsenic(III)-oxide. The crystals of 1 are rhombic, a = 6.902(4), b = 11.121(5), c = 13.988(8), space group P212121. The crystals of 2 are monoclinic, a = 11.757(10), b = 11.255(10), c = 18.631 (18), β = 91.78(7), space group P21/n. The mean bond lengths and angles in 1 are AsO = 1.790 Å, AsC = 1.959 Å, OAsO = 100.60°, CAsO = 99.65°, AsOAs = 128.77°, AsCAs = 118.73°, and in 2 they are AsO = 1.780 Å, AsC = 1.978 Å, OAsO = 101.45°, CAsO = 99.55°, AsOAs = 129.64°, AsCAs = 117.72°.
    Notes: S-9,10-Dimethyl-1,3,5,7-tetraarsa-2,4,6,8-tetraoxaadamantan (1) und 9,10-Diethyl-1,3,5,7-tetraarsa-2,4,6,8-tetraoxaadamantan (2) wurden durch Umsetzung von Propionsäure und Propionsäureanhydrid bzw. Buttersäure und Buttersäureanhydrid mit Arsenik erhalten. Beide Verbindungen sind strukturanalog zu Arsenolit. Kristalle von 1 sind rhombisch, a = 6.902(4), b = 11.121(5), c = 13.988(8), Raumgruppe P212121. Die Kristalle von 2 sind monoklin, a = 11.757(10), b = 11.255(10), c = 18.631(18), β = 91.78(7), Raumgruppe P21/n. Die Bindungslängen und -winkel in 1 betragen im Mittel AsO = 1.790 Å, AsC = 1.959 Å, OAsO = 100.60°, CAsO = 99.65°, AsOAs = 128.77°, AsCAs = 118.73°. In 2 betragen im Mittel die Bindungslängen und -winkel AsO = 1.780 Å, AsC = 1.978 Å, OAsO = 101.45°, CAsO = 99.55°, AsOAs = 129.64°, AsCAs = 117.72°.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19966220627
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Darstellung und Struktur von Hexa(4-methoxyphenyl)cyclohexaarsanProfessor Walter Siebert zum 60. Geburtstag gewidmet. (1997)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 623 (1997), S. 75-78 
    Details
    ISSN: 0044-2313
    Keywords: Cyclopolyarsane ; Hexa(4-methoxyphenyl)cyclohexaarsane ; Cyclohexaarsane ; Crystal Structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation and Structure of Hexa(4-methoxyphenyl)cyclohexaarsaneHexa(4-methoxyphenyl)cyclohexaarsane 4 was prepared by the reaction of 4-methoxyphenylarsonic acid with hypophosphorous acid. The structure of 4 was determined by X-ray crystal structure analysis. The crystals of 4 are monoclinic, a = 6.258(6) Å, b = 21.687(19) Å, c = 15.583(14) Å, β = 100.11(7)°, spacegroup P21/c. 4 consists of a six-membered ring in chair conformation and centrical symmetry. The mean bond lengths and angles are As—As = 2.46 Å, As—C = 1.96 Å, As—As—As = 91°, As—As—C = 97°. NMR investigations proved the presence of several species in CDCl3 and C6D6 solutions, respectively.
    Notes: Hexa(4-methoxyphenyl)cyclohexaarsan 4 wurde durch Umsetzung von 4-Methoxyphenylarsonsäure mit Unterphosphoriger Säure erhalten. Die Struktur von 4 wurde durch Kristallstrukturanalyse bestimmt. Kristalle von 4 sind monoklin, a = 6.258 (6) Å, b = 21.687(19) Å, c = 15.583(14) Å, β = 100.11(7)°, Raumgruppe P21/c. 4 besteht aus einem zentrosymmetrischen Sechsring in Sesselkonformation. Die Bindungslängen und -winkel betragen im Mittel As—As = 2.46 Å, As—C = 1.96 Å, As—As—As = 91°, As—As—C = 97°. In CDCl3- bzw. C6D6-Lösungen von 4 konnten mittels NMR mehrere Spezies nachgewiesen werden.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19976230113
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...