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  • 1
    Electronic Resource
    Electronic Resource
    Mass Soldering (1997)
    Bradford : Emerald
    Soldering & surface mount technology 9 (1997), S. 23-29 
    Details
    ISSN: 0954-0911
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: This issue of thejournal features the final part of a two-part series which comprises Chapter 15 fromVolume 1 of a recently published book 'A Comprehensive Guide to the Manufacture ofPrinted Board Assemblies'* edited by W.MacLeod Ross.Volume 1, containing 800 pages, and Volume 2, scheduled to be published in theSpring of 1997 and estimated to contain around 900 pages, will, as far as the publishers areaware, be the most comprehensive book ever published on the subject of printed boardassemblies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/09540919710800593
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Direct reaction of oximes with sarin, soman, or tabun in vitro (1997)
    Springer
    Archives of toxicology 71 (1997), S. 714-718 
    Details
    ISSN: 1432-0738
    Keywords: Key words Oximes ; Sarin ; Soman ; Tabun ; Direct reaction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The direct reaction of seven pyridinium oximes with the nerve agents sarin, soman, and tabun was followed by a spectrophotometric method. The half-lives (t 1/2) of the oximes, the first- and second-order rate constants (k 1, k 2), and the maximal reaction velocity ( $\roundv $ max) were calculated according to changes in the absorbance of the zwitterion (betaine) peak. In all cases the reaction velocity of the nerve agents with any of the oximes was highest with tabun, followed by sarin and then soman. Comparing the reaction rates of three therapeutically used oximes with the same nerve agent, the highest rate was obtained for soman with obidoxime, for sarin with 2-PAM, and for tabun with HI 6. The maximal reaction velocities reveal that the detoxification of the nerve agents by direct reaction with oximes and the subsequent decomposition of the phosphonyl oxime in vivo do not substantially contribute to the therapeutic effect of these antidotes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002040050450
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  • 3
    Electronic Resource
    Electronic Resource
    Schlußwort der Autoren (1997)
    Springer
    Der Radiologe 37 (1997), S. 186-187 
    Details
    ISSN: 1432-2102
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001170050196
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  • 4
    Electronic Resource
    Electronic Resource
    Element-Element-Bindungen. VIII. Synthese, Molekül- und Kristallstruktur des Dibrom(2,4,6-trimethylphenyl)bismutansProfessor Hans Bürger zum 60. Geburtstag gewidmet (1997)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 623 (1997), S. 941-956 
    Details
    ISSN: 0044-2313
    Keywords: Dichloro(2,4,6-trimethylphenyl)bismuthane ; dibromo(2,4,6-trimethylphenyl)bismuthane ; crystal structure ; Bi—Br‥Bi bridges ; η6-arene‥Bi contacts ; ir and Raman data ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Element-Element Bonds. VIII. Synthesis, Molecular and Crystal Structure of Dibromo(2,4,6-trimethylphenyl)bismuthaneDichloro- (1) und dibromo(2,4,6-trimethylphenyl)bismuthane (2) are obtained in relatively high yields from metathesis reactions of the corresponding bismuth(III) halides with tris(2,4,6-trimethylphenyl)bismuthane. An X-ray structure determination of the dibromo derivative 2 (monoclinic, P21/c; a = 896.2(2); b = 1531.9(3); c = 1713.3(3) pm; β = 94.31(3)° at -100±3°C; Z = 8 molecules; R = 0.059) shows two crystallographically independent molecules to build up a zigzag chain via strong Bi—Br‥Bi bridges (Bi—Br 282 and 281; Br‥Bi 302 and 302 pm) and relatively weak η6-arene‥Bi interactions (mean values Bi‥C 348 and 359 pm); for sterical reasons one bromo substituent of each molecule is not involved in coordinative bonding (Bi—Br 262 and 261 pm). To allow a better comparison of Bi—Cipso bond lengths and arene‥Bi contacts, relevant values of a greater number of related compounds have been compiled; for some of these examples arene‥Bi interactions had not been reported before. Ir and Raman bands below 350 cm-1 are assigned to stretching frequencies of the BiCl2 (1) and BiBr2 (2) fragments, respectively.
    Notes: Dichlor- (1) und Dibrom(2,4,6-trimethylphenyl)bismutan (2) erhält man in guter Ausbeute über eine Metathese des entsprechenden Bismut(III)-halogenids mit Tris(2,4,6-trimethylphenyl)bismutan. Nach den Ergebnissen einer Röntgenstrukturanalyse am Dibrom-Derivat 2 (monoklin, P21/c; a = 896,2(2); b = 1531,9(3); c = 1713,3(3) pm; β = 94,31(3)° bei -100±3°C; Z = 8 Moleküle; R = 0,059) assoziieren die beiden kristallographisch unabhängigen Moleküle über starke Bi—Br‥Bi-Brücken (Bi—Br 282 und 281; Br—Bi 302 und 302 pm) und verhältnismäßig schwache η6-Aren‥Bi-Wechselwirkungen (Mittelwerte Bi‥C 348 und 359 pm) zu Zickzack-Ketten; aus sterischen Gründen bleibt jeweils ein Brom-Substituent ohne eine weitere koordinative Bindung (Bi—Br 262 und 261 pm). Zur besseren Einordnung sind die Bi-Cipso-Abstände und die Aren‥Bi-Kontakte entsprechenden Werten aus einer größeren Zahl verwandter Verbindungen gegenübergestellt; bei einigen Beispielen wird erstmals auf bestehende Aren‥Bi-Wechselwirkungen hingewiesen. IR- und Raman-Banden unterhalb 350 cm-1 lassen sich den Valenzschwingungen des BiCl2- (1) bzw. BiBr2- Fragments (2) zuordnen.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.199762301148
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