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  • 1985-1989  (5)
  • 1900-1904
  • 1989  (5)
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  • 1985-1989  (5)
  • 1900-1904
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  • 1
    Electronic Resource
    Electronic Resource
    Beamline 10: A multipole wiggler beamline at SSRL (invited) : INTERNATIONAL CONFERENCE ON SYNCHROTRON RADIATION INSTRUMENTATION (1989)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 60 (1989), S. 1451-1456 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A beamline has been constructed at Stanford Synchrotron Radiation Laboratory (SSRL) whose radiation source is a multipole permanent magnet wiggler installed in a straight section of the SPEAR 3–3.5 GeV electron storage ring. The wiggler is a hybrid design that utilizes Nd–Fe alloy magnet material combined with Vanadium Permendur poles. It is approximately 2 m long and has 15 full wiggler periods. Its field is regulated by varying its gap height. It has a peak operating field, limited by the electron beam vacuum chamber vertical aperture, of 1.4 T. The beamline consists of vacuum, safety, and optical components capable of transporting photons to one hard x-ray (3–30 keV) end station, with provisions for implementing up to two additional branch lines. The existing hard x-ray branch can be focused by a Pt-coated toroidal mirror with a cutoff energy of approximately 22 keV. The experimental end station is serviced by a Hower–Brown type double crystal monochromator. The wiggler and beamline construction was completed in the fall of 1987 and was operated for a brief period for characterization and experimental use. We present design details and results of the initial characterization studies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1140961
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Zur Koordinationschemie des 1,3-Dithiol-2-thion-4,5-diselenolats (dsit) - ein Vergleich mit 1,3-Dithiol-2-thion-4,5-dithiolat (dmit) (1989)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 577 (1989), S. 206-216 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Coordination Chemistry of 1,3-Dithiole-2-thione-4,5-diselenolate (dsit)  -  Comparison with 1,3-Dithiole-2-thione-4,5-dithiolate (dmit)Synthesis and properties of metal(II) and/or metal(III) bis-chelates of 1,3-dithiole-2-thione-4,5-diselenolate (dsit) of general type (Bu4N)n[M(dsit)2] (n = 2: M = Zn, Cd, Hg, Cu, Ni, Pd, Pt; n = 1: M = Ni, Au) are described. By comparison of the ir, 13C nmr, epr spectra, cyclovoltammetric data, and x-ray investigations (nickel-bis-chelates) of chelates of dsit and those of the chelates of 1,3-dithiole-2-thione-4,5-dithiolate (dmit) the consequences of selenium for sulfur substitution on position 4 and 5 of the heterocyclic ligand are discussed.
    Notes: Synthese und Eigenschaften von Metall(II)- und/oder Metall(III)-Bis-Chelaten des 1,3-Dithiol-2-thion-4,5-diselenolats (dsit) vom Typ (Bu4N)n[M(dsit)2] (n = 2: M = Zn, Cd, Hg, Cu, Ni, Pd, Pt; n = 1: M = Ni, Au) werden beschrieben. Anhand der IR-, 13C-NMR-, EPR-Spektren, Cyclovoltammogramme und röntgenographischen Untersuchungen der Nickel-Bis-Chelate werden die Auswirkungen der Substitution von Schwefel durch Selen an der 4- und 5-Position diskutiert.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19895770123
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  • 3
    Electronic Resource
    Electronic Resource
    Kristall- und Molekülstruktur eines neuartigen Trimetallamacrocyclus: cyclo-Tri[nickel-μ-[1,1,1′,1′-tetraethyl-3,3′-terephthaloyl-bis-thioureato(2-)-S,O:O′,S′]] (1989)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 578 (1989), S. 191-197 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Crystal and Molecular Structure of a Novel Trimetallamacrocyle: cyclo-Tri[nickel-μ-[1,1,1′,1′-tetraethyl-3,3′-terephthaloyl-bis-thioureato(2-)-S,O:O′,S′]]The structure of the title compound has been determined by an X-ray structure analysis. The compound crystallizes in the triclinic space group P1 with a = 13.900, b = 15.403, c = 16.615 Å, δ = 84.01, β = 70.61, γ = 89.64° and Z = 2. The solution of the structure was performed by direct methods. The final R value was R = 0.073 for 2824 observed reflections. The molecule has a cyclic structure consisting of three molecules of the quadridentate ligand and three nickel atoms. The formed ring is a 27-membered trimetallamacrocycle. The nickel atoms form a nearly equilateral triangle with distances of 10.25 Å, 10.45 Å and 10.45 Å. The molecule is relatively planar.
    Notes: Die Struktur der Titelverbindung wurde durch Röntgenkristallstrukturanalyse bestimmt. Die Verbindung kristallisiert triklin in der Raumgruppe P1 mit den Gitterkonstanten a = 13,900, b = 15,403, c = 16,615 Å, δ = 84,01, β = 70,61, γ = 89,64° und Z = 2. Die Lösung der Struktur erfolgte mit direkten Methoden. Der abschließende R-Wert betrug R = 0,073 für 2284 beobachtete Reflexe. Das Molekül besitzt eine zyklische Struktur, bestehend aus drei Molekülen des quadridentaten Liganden und drei Nickel-Atomen. Der gebildete Ring ist ein 27gliedriger Trimetallamacrocyclus. Die Nickel-Atome bilden ein nahezu gleichseitiges Dreieck mit Abständen von 10,25 Å, 10,45 Å und 10,45 Å. Das Molekül ist relativ planar.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19895780122
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  • 4
    Electronic Resource
    Electronic Resource
    Dithiazoliumsalze mit Halometallaten - Synthese und Struktur von 3-Diethylamino-5-phenyl-1,2,4-dithiazolium-tetrachloro-niccolat(II)Professor Lothar Kolditz zum 60. Geburtstage gewidmet (1989)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 576 (1989), S. 203-214 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Dithiazolium Salts of Halometalates - Synthesis and Structure of 3-Diethylamino-5-phenyl-1,2,4-dithiazolium-tetrachloroniccolate (II)Chlorination of NiII-coordinated 1,1-diethyl-3-benzoyl-thiourea by SOCl2 in acetonitrile yields turquoise 3-diethyl-amino-5-phenyl-1,2,4-dithiazolium-tetrachloroniccolate. Its reduction produces cis-bis-(1,1-diethyl-3-thiobenzoylthioureato)nickel(II). The mechanism of formation as well as the crystal and molecular structure of the title compound are presented.
    Notes: Die Chlorierung von an NiII innerkomplex gebundenem 1,1-Diethyl-3-benzoylthioharnstoff mittels SOCl2 führt in Acetonitril zu türkisem 3-Diethylamino-5-phenyl-1,2,4-dithiazolium-tetrachloroniccolat, aus dem durch Reduktion cis-Bis-(1,1-diethyl-3-thiobenzoyl-thioureato)nickel(II) zugänglich ist. Der Bildungsmechanismus des Dithiazoliumsalzes wird erörtert und die Kristall- und Molekülstrukturanalyse vorgestellt.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19895760123
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  • 5
    Electronic Resource
    Electronic Resource
    Kristall- und Molekülstruktur eines neuartigen Dimetallamacrocyclus: cyclo-Di[quecksilber-μ-[1,1,1′,1′-tetraethyl-3,3′-terephthaloyl-bis-thioureato(2-)-S:S′]] (1989)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 578 (1989), S. 198-204 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Crystal and Molecular Structure of a Novel Dimetallamacrocycle: cyclo-Di[mercury-μ-[1,1,1′,1′-tetraethyl-3,3′-terephthaloyl-bis-thioureato(2-)-S:S′]]The structure of the title compound has been determined by an X-ray structure analysis. The compound crystallizes in the monoclinic space group P21/n with a = 13.437, b = 9.270, c = 18.791 Å, β = 100.65° and Z = 2. The solution of the structure was performed by Patterson methods. The final R value was R = 0.090 for 3089 observed reflections. The molecule has a cyclic structure consisting of two molecules of the ligand which coordinate only by the sulphur atoms and two mercury atoms. The formed ring is a 26-membered dimetallamacrocycle. The intramolecular Hg-Hg distance is 10.39 Å. The molecule has the symmetry Ci.
    Notes: Die Struktur der Titelverbindung wurde durch Röntgenkristallstruktur-analyse bestimmt. Die Verbindung kristallisiert monoklin in der Raumgruppe P21/n mit den Gitterkonstanten a = 13,437, b = 9,270, c = 18,791 Å, β = 100,65° und Z = 2. Gelöst wurde die Struktur mittels Patterson-Methoden. Der abschließende R-Wert betrug R = 0,090 für 3089 beobachtete Reflexe. Das Molekül besitzt eine zyklische Struktur, die sich aus zwei Molekülen des nur über die Schwefel-Atome koordinierenden Liganden und zwei Quecksilber-Atomen zusammensetzt. Der gebildete Ring ist ein 26gliedriger Dimetallamacrocyclus. Der intramolekulare Hg-Hg-Abstand beträgt 10,39 Å. Das Molekül besitzt die Symmetrie Ci.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19895780123
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