Library

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
    Springer
    European journal of clinical pharmacology 39 (1990), S. 589-591 
    ISSN: 1432-1041
    Keywords: Atrial natriuretic factor (ANF) ; platelet aggregation ; aldosterone ; whole blood ; ex-vivo
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Atrial natriuretic factor (ANF) binding sites have been shown to be present on human platelet membranes. We investigated the effect of an infusion of ANF 5 pmol·kg−1.min−1 on platelet aggregation in whole blood ex-vivo in 8 normal volunteers. Spontaneous platelet aggregation, collagen (0.6–2 μg·ml−1)-induced or ADP (0.5–2.0 μM)-induced aggregation was not affected by ANF. Plasma aldosterone was however significantly attenuated by ANF. These results show that a pharmacological dose of ANF does not affect platelet aggregation in man. These results suggest that the high plasma levels of ANF normally achieved in chronic heart failure or acute myocardial infarction are unlikely to contribute to the platelet hyperreactivity, often observed in these conditions.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 622 (1996), S. 1847-1853 
    ISSN: 0044-2313
    Keywords: Selenium Halides ; Crystal Structures ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Crystal Structures of SeCl3+SbCl6-, SeBr3+GaBr4-, PCl4+SeCl5-, and (PPh4+)2SeCl42- · 2 CH3CNThe crystal structures of the title compounds were determined by X-ray diffraction.SeCl3+SbCl6-: Space group P21/m, Z = 4, structure determination with 1795 observed unique reflections, R = 0.022. Lattice dimensions at -80°C: a = 940.9, b = 1066.3, c = 1234.9 pm, β = 102.79°. The compound forms ion pairs with the structure of a double octahedron with linked surfaces. SeBr3+GaBr4-: Space group Pc, Z = 2, structure determination with 1461 observed unique reflections, R = 0.058. Lattice dimensions at -60°C: a = 660.1, b = 655.3, c = 1431.3 pm, β = 101.177°. The compound crystallizes in the SCl3[AlCl4] lattice type. Between the ions there are two relatively short Se … Br—Ga contacts.PCl4+SeCl5-: Space group Ima2, Z = 8, structure determination with 1757 observed unique reflections, R = 0.029. Lattice dimensions at -50°C: a = 1651.6, b = 1201.2, c = 1166.4 pm. The SeCl5- ions are associated to chains via interionic Se—Cl … Se contacts along the crystallographic c-axis.(PPh4+)2SeCl42- · 2CH3CN: Space group P21/n, Z = 2, structure determination with 2578 observed unique reflections, R = 0.050. Lattice dimensions at -80°C: a = 1288.5, b = 726.0, c = 2585.8 pm, β = 101.65°. The compound includes planar-tetragonal SeCl42- ions, which almost meet D4h symmetry.
    Notes: Die Kristallstrukturen der Titelverbindungen wurden röntgenographisch ermittelt.SeCl3+SbCl6-: Raumgruppe P21/m, Z = 4, Strukturlösung mit 1795 beobachteten unabhängigen Reflexen, R = 0,022. Gitterkonstanten bei -80°C: a = 940,9; b = 1066,3; c = 1234,9 pm; β = 102,79°. Die Verbindung bildet Ionenpaare mit der Struktur eines flächenverknüpften Doppeloktaeders.SeBr3+GaBr4-: Raumgruppe Pc, Z = 2, Strukturlösung mit 1461 beobachteten unabhängigen Reflexen, R = 0,058, Gitterkonstanten bei -60°C: a = 660,1; b = 655,3; c = 1431,3 pm; α = 101,17°. Die Verbindung kristallisiert im SCl3[AlCl4]-Strukturtyp. Zwischen den Ionen bestehen zwei relativ kurze Se … Br—Ga-Kontakte.PCl4+SeCl5-: Raumgruppe Ima2, Z = 8, Strukturlösung mit 1757 beobachteten unabhängigen Reflexen, R = 0,029. Gitterkonstanten bei -50°C; a = 1651,6; b = 1201,2; c = 1166,4 pm. Die SeCl5- -Ionen sind über interionische Se—Cl … Se-Kontakte entlang der kristallographischen c-Achse zu Ketten assoziiert.(PPh4+)2SeCl42- · 2CH3CN: Raumgruppe P21/n, Z = 2, Strukturlösung mit 2578 beobachteten unabhängigen Reflexen, R = 0,050. Gitterkonstanten bei -80°C: a = 1288,5; b = 726,0; c = 2585,8 pm; β = 101,65°. Die Verbindung enthält planar-quadratische SeCl42--Ionen, die nahezu D4h-Symmetrie erfüllen.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 622 (1996), S. 739-744 
    ISSN: 0044-2313
    Keywords: Tellurium ; Nitride Chloride ; Synthesis ; IR spectra ; Crystal Structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Crystal Structure of the Tellurium Nitride Chloride [Te11N6Cl26]The title compound has been prepared by the reaction of tellurium tetrachloride with tris(trimethylsilyl)amine in boiling toluene. Pale yellow crystals of the composition [Te11N6Cl26]2 · 9C7H8 are obtained by cooling of the saturated solution. The compound was characterized by IR spectroscopy and by a crystal structure determination. Space group P1, Z = 1, structure solution with 5912 observed unique reflections, R = 0.043. Lattice dimensions at -50°C: a = 1636.2, b = 1692.7, c = 1704.1 pm, α = 60.57°, β = 69.59°, γ = 64.29°. The dominating structural element of the nitrchloride are planar Te5N3 units forming two four-member Te2N2 rings which are condensed together. Two asymmetric units [Te11N6Cl26] are linked by a centre of symmetry; the intercalated toluene molecules are without binding interactions.
    Notes: Die Titelverbindung entsteht durch Reaktion von Tellurtetrachlorid mit Tris(trimethylsilyl)amin in siedendem Toluol. Blaßgelbe Kristalle der Zusammensetzung [Te11N6Cl26]2 · 9C7H8 entstehen beim Abkühlen gesättigter Lösungen. Die Verbindung wird durch das IR-Spektrum und durch eine Kristallstrukturanalyse charakterisiert. Raumgruppe P1, Z = 1, Strukturlösung mit 5912 beobachteten unabhängigen Reflexen, R = 0,043. Gitterkonstanten bei -50°C: a = 1636,2; b = 1692,7; c = 1704,1 pm; α = 60,57 β = 69,59°; γ = 64,29°. Bestimmendes Strukturmotiv des Nitridchlorids sind planare Te5N3-Einheiten, die zwei miteinander kondensierte Te2N2-Viererringe bilden. Zwei asymmetrische Einheiten [Te11N6Cl26] sind über ein Symmetriezentrum miteiander verknüpft; die eingelagerten Toluomoleküle sind ohne bindende Wechselwirkung.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...