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  • Inorganic Chemistry  (19)
  • Acute occlusion of femoral-popliteal bypass  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Langenbeck's archives of surgery 372 (1987), S. 655-656 
    ISSN: 1435-2451
    Keywords: Local thrombolytic therapy ; Acute occlusion of peripheral artery ; Acute occlusion of femoral-popliteal bypass ; Lokale Thrombolyse ; Akuter Arterienverschluss ; Akuter Transplantatverschluss
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung 7 Jahre Erfahrung mit der lokalen niedrig dosierten thrombolytischen Behandlung von 564 Beinarterienverschlüssen ergaben: Embolische Verschlüsse liessen sich bis zu einer Dauer ihres Bestehens von 6 Wochen in 72,7% beseitigen, ältere noch in 42,3%. Thrombotische Verschlüsse bis zu einem Alter von 6 Monaten konnten in 58% erfolgreich behandelt werden, ältere nur noch in 36,2%. Die kumulative Durchgängigkeit erfolgreich behandelter Verschlüsse beträgt nach 5 Jahren 89,5% für embolische und 58,8% für thrombotische. Die Differentialtherapie der akuten Beindurchblutungsstörungen muss mit den Gefässchirurgen neu überdacht werden.
    Notes: Summary The results of local low-dose thrombolytic treatments of 564 peripheral arterial occlusions were as follows: Embolic occlusions up to 6 weeks could be removed in 72.7%, the longer lasting occlusions in 42.3%. Thrombotic occlusions lasting up to 6 months were successfully treated in 58%, still older ones in 36.2%. The cumulative patency after 5 years was 89.5% in embolic and 58.8% in thrombotic occlusions. Therefore, the differential therapy of acute peripheral ischemia has to be thought over anew together with the vascular surgeons.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 420 (1976), S. 285-291 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Crystal arid Molecular Structure of 2,5-Diiodine-3,4-diethyl-1,2,5-thiadiboroleneThe title compound crystallizes in the triclinic space group P1 with a = 8.22, b = 8.33, c = 9.745 Å, α = 109.1°, β = 107.1°, γ = 102.9° and two molecules per unit cell. The two molecules are associated by a center of symmetry, forming a four-membered B-S ring, which leads to differently coordinated boron atoms in the thiadiborolene ring. The bond lengths and angles for the boron atoms are similar to those known for trigonally and tetrahedrally bonded boron, respectively. The five-membered ring is nearly planar.
    Notes: Die Verbindung kristallisiert in der triklinen Raumgruppe P1 mit a = 8,22, b = 8,33, c = 9,745 Å, α = 109,1°, β = 107,4°, γ = 102,9° und 2 Molekülen in der Elementarzelle. Die beiden Molekeln sind über ein Symmetriezentrum unter Bildung eines B—S-Vierrings miteinander verknüpft, so daß sich zwei verschieden koordinierte Bor-Atome im Fünfring ergeben. Die Bindungslängen und -winkel an den beiden Bor-Atomen stimmen recht gut mit den für drei- bzw. vierfach koordiniertes Bor bekannten Werten überein. Der Fünfring ist nahezu planar.
    Additional Material: 3 Ill.
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  • 3
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On Diazadiphosphetidine. III. N,N′-Diphosphoryl Diaza-λ3,λ3-diphosphetidinesSynthesis, structure and mass spectrum of trans 1,3-bis(diethoxyphosphoryl)-2,4-bis(diethylamino)-1,3,2,4-diaza- λ3,λ3-diphosphetidine (I) are described. Furthermore the procedure for preparing bis(diethylamido)-phosphorous-(N-diethoxyphosphoryl)-imide (III) and 1,3-bis(diphenoxyphosphoryl)-2,4-bis(diethylamino)-1,3,2,4-diaza-λ3,λ3-diphosphetidine (VI) is presented. I, N-diethyl-N′N″-bis(diethoxyphosphoryl)-phosphorous triamide (II), III, VI and bis(diethylamido)-phosphorous(N-diphenoxyphosphoryl)-imide(VIII) are characterized by their nmr spectra.
    Notes: Synthese, Struktur und Massenspektrum von trans-1,3-Bis(diethoxyphosphoryl)-2,4-bis(diethylamino)-1,3,2,4-diaza-λ3,λ3-diphosphetidin (I) werden beschrieben. Weiter wird die Synthese von Bis(diethylamido)-phosphorigsäure-(N-diethoxyphosphoryl)-imid (III) und 1,3-Bis(diphenoxyphosphoryl)-2, 4-bis(diethylamino)-1,3,2,4-diaza-λ3,λ3-diphosphetidin (VI) mitgeteilt. I, N-Diethyl-N′,N″-bis(diethoxyphosphoryl)-phosphorigsäuretriamid (II), III, VI und Bis-(diethylamido)-phosphorigsäure-(N-diphenoxyphosphoryl)-imid (VIII) sind durch ihre Spektren charakterisiert.
    Additional Material: 1 Ill.
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 504 (1983), S. 67-76 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Dimethylaminoalanes, H3 - nAl[N(CH3)2]n, n = 1, 2, 3; Crystal Structures and Molecular SpectraThe X-ray crystal structure analyses of dimethylaminoalane (I), bis(dimethylamino)alane, and tris(dimethylamino)alane are reported and the molecular spectra of these compounds are discussed. I is trimeric and exists as sixmembered ring of a chair-conformation. II and III are dimeric and build up planar four-membered rings.
    Notes: Es werden die Röntgenstrukturanalysen von Dimethylaminoalan (I), Bis(dimethylamino)alan (II) und Tris(dimethylamino)alan (III) mitgeteilt und deren Molekülspektren diskutiert. I ist trimer und liegt als Sechsring in der Sesselform vor; II und III sind dimer und bilden planare Vierringe aus.
    Additional Material: 3 Ill.
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  • 5
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The crystal structures of WOCl4 and WOBr4 were determined by X-ray single crystal methods. The two compounds are isostructural and crystallize in the tetragonal space group I 4. The lattice constants are given above.2 oxygen and 4 chlorine (bromine) atoms form a distorted octahedron around each tungsten atom. The octahedra are linked by oxygen bridges to chains running parallel c.
    Notes: Die Kristallstruktur von WOCl4 und WOBr4 wurde röntgenographisch aus Einkristallaufnahmen bestimmt. Die beiden Verbindungen sind isostrukturell und kristallisieren in der tetragonalen Raumgruppe I 4. Die Gitterkonstanten sind: \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{*{20}c} {{\rm WOCl}_{\rm 4} :} & {{\rm a } = 8,48,} & {{\rm c = 3,99}{\AA}} \\[6pt] {{\rm WOBr}_{\rm 4} :} & {{\rm a } = 8,96,} & {{\rm c = 3,93}{\AA}} \\ \end{array} $$\end{document} Jedes Wolfram-Atom ist von 2 Sauerstoff- und 4 Chlor- bzw. Brom-Atomen verzerrt oktaedrisch umgeben. Die Oktaeder sind Über Sauerstoff-Brücken zu Ketten verknüpft, welche parallel der c-Achse laufen.
    Additional Material: 3 Ill.
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  • 6
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: B-Tris(dimethylamino)borazine crystallizes in the monoclinic space group P21/a with a = 9.841, b = 17.61, c = 8.140 Å, β = 111.9°, and four molecules per unit cell. The molecule shows only small deviations from a planar structure of the symmetry D3h. The endocyclic and exocyclic B—N bonds are equal within the standard deviation (mean value 1.432 Å). The ring angles are different at the B atoms and the N atoms.
    Notes: B-Tris(dimethylamino)borazol kristallisiert in der monoklinen Raumgruppe P21/a mit a = 9,841, b = 17,61 c = 8,140 Å, β = 111,9° und 4 Molekeln in der Elementarzelle. Die Molekel zeigt nur geringe Abweichungen von einer planaren Struktur mit D3h-Symmetrie. Die endocyclischen und die exocyclischen B-N-Bindungen sind innerhalb der Standardabweichung gleich lang (Mittelwert 1,432 Å). Die Ringwinkel sind an den B-Atomen und den N-Atomen deutlich verschieden.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 491 (1982), S. 266-270 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: N-Phenylmercury-N,N-bis(phosphoric diphenylester)imideSynthesis, properties, and structure of the title compound are described.
    Notes: Darstellung, Eigenschaften und Struktur der Titelverbindung werden beschrieben.
    Additional Material: 1 Ill.
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 508 (1984), S. 61-72 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On P—P Containing Cyclic Compounds. II.Reaction of N,N'-dimethylthiourea with phenyl dichlorophosphane yields 1.4-dimethyl-2. 3-diphenyl-1.4.2.3-diazadiphospholidine-5-thione-2-sulfide (II). The compound is characterized by its nmr, vibration and mass spectra as well as the results of an X-ray structural analysis. Byproduct of the reaction is N-(N,N'-dimethylcarbamimidoyl)-N,N'-dimethyl thiourea hydrochloride (III), which crystallizes with pyridinium chloride. Molecular and crystal structure are reported. With methyl dichlorophosphane N,N'-dimethylthiourea forms 1.2.3.4-tetramethyl-1.4.2.3-diazadiphospholidine-5-thione-2-sulfide (IV), which is characterized by its nmr and vibration spectra.
    Notes: Die Umsetzung zwischen N,N'-Dimethylthioharnstoff und Phenyldichlorphosphan führt zu 1,4-Dimethyl-2, 3-diphenyl-1, 4, 2, 3-diazadiphospholidin-5-thion-2-sulfid (II). Die Verbindung ist durch ihre NMR-, Schwingungs- und Massenspektren sowie die Ergebnisse einer Röntgenstrukturanalyse charakterisiert. Nebenprodukt der Umsetzung ist N-(N,N'-Dimethylcarbamimidoyl)-N,N'-dimethyl-thioharnstoffhydrochlorid (III), das mit Pyridiniumchlorid kristallisiert. Molekül- und Kristallstruktur werden mitgeteilt. Mit Methyldichlorphosphan bildet N,N'-Dimethylthioharnstoff 1,2,3,4-Tetramethyl-1,4,2,3-diazadiphospholidin-5-thion-2-sulfid (IV), das durch seine NMR- und Schwingungsspektren charakterisiert ist.
    Additional Material: 6 Ill.
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  • 9
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Crystal Structure of AgCu3Cu(AsO4)3 and its Structural Relations to AgCo3H2(AsO4)3 and AgZn3H2 (AsO4)3The compound AgCu3Cu(AsO4)3 was synthesized and investigated by X-rays. It crystallizes in the monoclinic space group C2/c with a = 1 212.7(2), b = 1 249.0(2), c = 727.8(1) pm, β = 117.94(1)°, Z = 4. The structure is closely related to the structures of AgCo3H2(AsO4)3 and AgZn3H2(AsO4)3. Only two hydrogen atoms are replaced by an additional copper atom forming a copper coordination square instead of two hydrogen bridges. The remaining copper atoms are sixfold coordinated with the generally observed Jahn-Teller distortion. Whereas in AgCo3H2(AsO4)3 and AgZn3H2(AsO4)3 silver has a (4+4) coordination, it is in this compound distinctly eightfold coordinated.
    Notes: Die Verbindung AgCu3Cu(AsO4)3 wurde synthetisiert und röntgenographisch untersucht. Sie kristallisiert in der monoklinen Raumgruppe C2/c mit a = 1 212,7(2), b = 1 249,0(2), c = 727,8(1) pm, β = 117,94(1)°, Z = 4. Die Struktur weist eine enge Verwandtschaft mit den Strukturen von AgCo3H2(AsO4)3 und AgZn3H2(AsO4)3 auf. Es sind hier lediglich zwei Wasserstoff-Atome durch ein zusätzliches Kupfer-Atom ersetzt, so daß anstelle zweier Wasserstoff-Brücken ein Kupfer-Quadrat eingebaut ist. Die anderen Kupfer-Atome sind sechsfach koordiniert mit der allgemein beobachteten Jahn-Teller-Verzerrung. Während beim AgCo3H2(AsO4)3 bzw. AgZn3H2(AsO4)3 Silber eine (4+4)-Koordination besitzt, liegt es hier in einer deutlichen Achterkoordination vor.
    Additional Material: 2 Ill.
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 342 (1966), S. 240-252 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The crystal structure of dimeric N-methyltrichlorophosphineimine was determined by three-dimensional PATTERSON and FOURIER syntheses and refined by least-squares methods. The compound crystallizes in the monoclinic space group P21/n with a = 6.013, b = 14.04, c = 6.918 Å, β = 98.5°. The molecule has the structure of a four-membered ring with alternating P and N atoms. The P atoms are trigonal-bipyramidally coordinated. The bridging N atoms occupy one axial and one equatorial position. This means that both two different P—N and P—Cl bond lengths occur. The consideration of the P—N bond lengths gives rise to the assumption of pπ-dπ bonds.
    Notes: Die Kristallstruktur des dimeren N-Methyltrichlorphosphinimins wurde über dreidimensionale PATTERSON- und FOURIER-Synthesen bestimmt und nach der Methode der kleinsten Quadrate verfeinert. Die Verbindung kristallisiert in der monoklinen Raumgruppe P21/n mit a = 6,013, b = 14,04, c = 6,918 Å, β = 98,5°. Die Molekel hat die Struktur eines Vierrings mit alternierenden P- und N-Atomen. Die P-Atome sind trigonal-bipyramidal koordiniert. Die brückenbildenden N-Atome besetzen eine axiale und eine äquatoriale Position. Daraus resultieren je zwei verschiedene P—Cl- und P—N-Bindungslängen. Die Betrachtung der P—N-Bindungslängen führt zu der Annahme von pπ-dπ-Bindungen.
    Additional Material: 3 Ill.
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