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  • Inorganic Chemistry
  • Superfluidity and superconductivity
  • 2015-2019
  • 1980-1984
  • 1975-1979  (31)
  • 1930-1934
  • 1925-1929
  • 1979  (31)
Collection
Publisher
Years
  • 2015-2019
  • 1980-1984
  • 1975-1979  (31)
  • 1930-1934
  • 1925-1929
Year
  • 1
    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 Thallium(I) Hexaiodomercurate(II), Tl4HgI6In the structure of the tetragonal Tl4HgI6 (a = 944.6 pm, c = 926.0 pm, Z = 2, space group P 4/mnc) isolated, in c-direction compressed HgI6 octahedra are situated. The mercury atoms are disordered; they occupy statistically 4 positions in the equatorial plane of the octahedra in such a manner that strongly deformed HgI4 tetrahedra are produced. The thallium atoms are eightfold coordinated like a bicapped trigonal prism. The relationship between the Tl4HgI6 structure and the cubical K2PtCl6 type will be discussed.
    Notes: In der Struktur des tetragonalen Tl4HgI6 (a = 944,6 pm, c = 926,0 pm, Z = 2, Raumgruppe P 4/mnc) liegen isolierte, in Richtung der c-Achse gestauchte HgI6-Oktaeder vor. Die Quecksilberatome sind fehlgeordnet; sie besetzen statistisch 4 Positionen in der Äquatorebene der Oktaeder derart, daß stark verzerrte HgI4-Tetraeder entstehen. Die Thallium-Atome sind achtfach in Form eines bicapped trigonalen Prismas koordiniert. Die Beziehungen der Tl4HgI6-Struktur zum kubischen K2PtCl6-Typ werden diskutiert.
    Additional Material: 5 Ill.
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  • 2
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Organocobalt-Clusterverbindungen. 26. Die Darstellung von Mercaptosubstituenten enthaltenden Methylidyntricobaltnonacarbonyl-KomplexenDie Umsetzung von Bromo- und Chloromethylidyntricobaltnonacarbonyl, XCCo3(CO)9 (X = Br, Cl) mit Zinndimethylbis(alkylmercaptiden), (CH3)2Sn(SR)2 in Toluol unter Rückfluß in 20-30 min stellt eine gute Methode zur Herstellung von schwefelsubstituierten Methylidyntricobaltnonacarbonylkomplexen des Typs RSCCo3(CO)9 (R = Alkyl, Aryl, Acetyl, Benzoyl) dar. Ebenfalls effektiv, aber weniger praktisch waren Trimethylzinnalkylmercaptide und Quecksilber-bis(ethylmercaptid).
    Notes: The reaction of bromo- and chloromethylidynetricobalt nonacarbonyl, XCCo3(CO)9 (X = Br, Cl) with dimethyltin bis (alkyl mercaptides), (CH3)2Sn(SR)2, in toluene solution at reflux for 20-30 min provides a useful procedure for the preparation of sulfur-substituted methylidynetricobalt nonacarbonyl complexes of type RSCCo3(CO)9 (R = alkyl, aryl, acetyl, benzoyl). Also effective, but less practical, in such applications were trimethyltin alkylmercaptides and mercury bis (ethyl mercaptide).
    Additional Material: 2 Tab.
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 454 (1979), S. 5-10 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Investigations on Bis(methylsulfonyl)amine (Dimesylamine). II. N-Halogeno-dimesylamines. IIThe following halogen(+I) compounds were prepared and characterized: (RSO2)2NCl with R = CH3 and C2H5 from (RSO2)2NH and (CH3)3COCl; (CH3SO2)2NBr from (CH3SO2)2NH and HOBr; (CH3SO2)2NI from (CH3SO2)2NCl and I2.
    Notes: Die folgenden Halogen(+I)-Verbindungen wurden dargestellt und charakterisiert: (RSO2)2NCl mit R = CH3 und C2H5 aus (RSO2)2NH und (CH3)3COCl; (CH3SO2)2NBr aus (CH3SO2)2NH und HOBr; (CH3SO2)2NI aus (CH3SO2)2NCl und I2.
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 454 (1979), S. 82-89 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Enthalpies of Formation of Alkali Chloride-Lanthanide Chloride CompoundsThe enthalpies of formation in a series of compounds of the type A3MCl6 resp AM2Cl7 (A = K, Cs; M = Lanthanide(III) ion) by the reactions 3 ACl + MCl3 → A3MCl6 resp. ACl + 2 MCl3 → AM2Cl7 were determined in an isoperibolic solution calorimeter. The enthalpies were used to calculate standard enthalpies of formation and lattice energies of the compounds. Both values were discussed in the relation to the structure of the compounds.
    Notes: Die Bildungsenthalpien einer Reihe von Verbindungen des Typs A3MCl6 bzw. AM2Cl7 (A = K, Cs; M = Lanthanoid(III)-Ion) entsprechend den Reaktionen 3 ACl + MCl3 → A3MCl6 bzw. ACl + 2 MCl3 → AM2Cl7 wurden in einem isoperibolen Lösungscalorimeter bestimmt. Aus den Bildungsenthalpien wurden über Kreisprozesse die Standardbildungsenthalpien und Gitterenergien der Verbindungen berechne und diskutiert.
    Additional Material: 5 Ill.
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 455 (1979), S. 99-102 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Formation of CaF2 from Gaseous HF and Solid CaCl2The reaction 2{HF}g + {CaCl2}s → 2{HCl}g + {CaF2}s was studied under isothermal conditions in a constant HF atmosphere at 293, 393, and 443 K. Up to a degree of conversion x = ⅔ the rate of reaction is constant, when using powdered CaCl2. In view of the used CaCl2 the order of reaction is zero. This means, that the chemical reaction is limiting the velocity of the reaction in the range 0 ≤ x ≤ ⅔ and that the reaction takes place at a nearly constant surface. The activation energy was detected with 4.978 kJ/mol.
    Notes: Die Reaktion {HF}(g) + {CaCl2}(s) → 2{HCl}(g) + {CaF2}(s) wurde unter isothermen Bedingungen in einer konstanten HF-Atmosphäre bei 293, 393 und 443 K untersucht. Bis zu einem Umsatzgrad x = ⅔ ist die Reaktionsgeschwindigkeit bei Verwendung von CaCl2-Pulver in 1. Näherung konstant. Die Reaktion ist bezüglich des eingesetzten CaCl2 0. Ordnung. Daraus ergibt sich, daß die chem. Reaktion im Bereich 0 ≤ x ≤ ⅔ geschwindigkeitsbestimmend ist und an einer nahezu konstanten Oberfläche abläuft. Die Aktivierungsenergie wurde zu 4,978 kJ/mol bestimmt.
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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: Contributions to the Chemistry of Phosphorus. 82. About the Alkyl Cyclodicarba Triphosphanes (PR)3C2H4 [R = CH3, C2H5, t-C4H9] and (PC2H5)3C2H3CH3The alkyl-substituted cyclodicarba triphosphanes (PR)3C2H4 (R = CH3 1, C2H5 2, t = C4H9 3) and (PC2H5)3C2H3CH3 4 are obtained by the reaction of the corresponding dipotassium alkylphosphides K—(PR)n—K (n = 3,4) with 1,2-dichloroethane and 1,2-dichloropropane respectively. Besides, the homocyclic rings (PR)n (n = 5,4) characteristic for the given substituent and in the case of R = t-C4H9 the six-membered ring compound (t-C4H9P)4C2H4 are formed. For the alkyl cyclodicarba triphosphanes 1, 2 and 4 two configuration isomers could be identified; the „all-trans“-forms are always predominant. The 31P nmr parameters of the various configuration isomers are reported, and the conformation is discussed.
    Notes: Die alkylsubstituierten Cyclodicarba-triphosphane (PR)3C2H4 (R = CH3 1, C2H5 2, t-C4H9 3) und (PC2H5)3C2H3CH3 4 werden durch Reaktion der entsprechenden Dikaliumalkylphosphide K—(PR)n—K (n = 3, 4) mit 1,2-Dichloräthan bzw. 1,2-Dichlorpropan erhalten. Daneben entstehen die für die jeweiligen Substituenten charakteristischen Homocyclen (PR)n (n = 5,4) sowie im Fall von R = t-C4H9 die Sechsringverbindung (t-C4H9P)4C2H4. Von den Alkylcyclodicarba-triphosphanen 1, 2 und 4 konnten jeweils zwei Konfigurationsisomere identifiziert werden; die „all-trans“-Formen überwiegen stets. Die 31P-NMR-Parameter der einzelnen Konfigurationsisomere werden mitgeteilt und ihre Konformationen diskutiert.
    Additional Material: 4 Ill.
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  • 7
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: N-Chloroalkylated Nitride Chlorides of Molybdenum(VI); the Crystal Structure of Cl3PO(Cl4)Mo≡N—C2Cl5By the reaction of molybdenum pentachloride, dissolved in POCl3, with cyanogen chloride and trichloroacetonitril, respectively, in the presence of chlorine or nitrogen trichloride, the N-chloroalkyl nitridchlorides Cl3PO—(Cl4)Mo≡N—CCl3 (I) and Cl3PO—(Cl4)Mo≡N—C2Cl5 (II) are formed. I can also be obtained by the reaction of potassium cyanide in POCl3 with chlorine. II crystallizes in the orthorhombic space group Pbca = D2h15 with 8 molecules in the unit cell. The crystal structure was solved by X-ray diffraction methods (R = 0.060; 1999 observed reflexions). The Mo atom is sixfold coordinated; the O atom of the solvate molecule POCl3 is coordinated trans to the Mo≡N triple bond (r MoN = 169 pm). The MoCl4 group formes a plain tetragonal pyramid (14°) with the Mo atom at the top position in the direction of the nitrid ligand. The i.r. spectra of I and II are recorded and assigned.
    Notes: In POCl3 gelöstes MoCl5 reagiert mit Chlorcyan bzw. mit Trichloracetonitril bei Anwesenheit von Chlor oder Stickstofftrichlorid zu den N-chloralkylierten Nitridchloriden Cl3PO—(Cl4)Mo≡N—CCl3 (I) bzw. Cl3PO—(Cl4)Mo≡N—C2Cl5 (II). Zu I gelangt man auch durch Reaktion von MoCl5 mit Kaliumcyanid in POCl3 unter Chlorierung. II kristallisiert in der orthorhombischen Raumgruppe Pbca = D2h15 mit Z = 8. Die Kristallstruktur wurde durch Röntgenbeugungsexperimente ermittelt (R = 0,060; 1999 beobachtete Reflexe). Das Molekül enthält sechsfach koordiniertes Molybdän mit einer Mo≡N-Dreifachbindung (r = 169 pm). In trans-Position zur MoN-Bindung ist das O-Atom des solvatisierenden POCl3-Moleküls koordiniert; die MoCl4-Gruppe bildet eine flache tetragonale Pyramide, bei der das Mo-Atom um 14° in Richtung des Nitridliganden versetzt ist. Die IR-Spektren von I und II werden mitgeteilt und zugeordnet.
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 456 (1979), S. 117-129 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Influence of Lattice Defects of Graphite on the Formation of Graphite HydrogensulfateVarious natural and synthetic graphites were oxidized with chromic acid in sulfuric acid to the 1st stage of graphite hydrogensulfate with the intent of determining the inhibition of intercalation by lattice defects. More oxidant than required by stoichiometry is consumed because slow total oxidation to CO2 is superimposed even at room temperature. The activation energy for total oxidation is reduced by lattice defects. With some graphites, separation of the intercalation reaction from total oxidation was accomplished using calorimetry. The reaction enthalpy in the oxidation of well-crystallized graphites to the graphite salt is -3.05 kJ/mol C.
    Notes: Die Oxydation verschiedener Natur- und Kunstgraphite mit Chromschwefelsäure zur 1. Stufe des Graphithydrogensulfats wurde untersucht mit dem Ziel, die Hemmung der Intercalation durch Gitterstörungen zu bestimmen. Es wird mehr Oxydationsmittel als stöchiometrisch erforderlich verbraucht, weil auch bei Raumtemperatur langsam Totaloxydation zu CO2 erfolgt. Die Aktivierungsenergie für die Totaloxydation wird durch Gitterstörungen herabgesetzt. Eine Trennung von Intercalationsreaktion und Totaloxydation gelang bei einigen Graphiten durch calorimetrische Messung. Für gut kristallisierte Graphite beträgt die Reaktionsenthalpie für die Oxydation zum Graphitsalz -3,05 kJ/mol.
    Additional Material: 6 Ill.
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 459 (1979), S. 111-118 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Cyclic Titanium Amides with Sila-titana-diazacyclobutane StructureN,N′ dilithiated diaminosilanes Me2Si(NHR)2, R = i-Pr, t-Bu and Me3Si, react with TiCl4 in a 2:1 ratio to form spirocyclic titanium amides (B, C 1; see Inhaltsübersicht). In a 1:1 ratio or upon reaction with (R′2N)2TiBr2, R′ = Me, Et, titanacyclobutanes (C 2 - C 6) are obtained. Compounds with R = Me3Si exhibit particularly high thermal stability.
    Notes: N,N′-Dilithiierte Diaminosilane Me2Si(NHR)2, R = i-Pr, t-Bu und Me3Si, reagieren mit TiCl4 im Verhältnis 2:1 zu spirocyclischen Titanamiden (B, C1). Im Verhältnis 1:1 bzw. mit (R′ 2N)2TiBr2, R′ = Me, Et, bilden sich Titana-cyclobutane (C 2 - C 6). Verbindungen mit R = Me3Si zeichnen sich durch besonders hohe thermische Beständigkeit aus.
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 459 (1979), S. 123-130 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation and Characterization of Cyclohexasilane Si6H12A preparation route is described in detail for the first synthesis of Si6H12, starting from the full phenylated Si6-cycle. With the aid of AlCl3/HCl all phenyl groups are splitted off and the yielded Si6Cl12 is hydrogenated with LiAlH4. Si6H12 is characterized by means of different kinds of spectras and their properties.
    Notes: Es wird eine Darstellungsmethode für die erstmalige Synthese von Si6H12 aus dem perphenyliertem Si6-Ring ausführlich beschrieben, wobei man mittels AlCl3/HCl erst alle Phenylgruppen abspaltet und das entstandene Si6Cl12 mit LiAlH4 hydriert. Si6H12 wird durch verschiedene Spektren und seine Eigenschaften charakterisiert.
    Additional Material: 4 Ill.
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