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  • Inorganic Chemistry
  • 2005-2009
  • 1990-1994  (31)
  • 1935-1939  (12)
  • 1994  (31)
  • 1935  (12)
  • 1
    Electronic Resource
    Electronic Resource
    Der Gaskomplex MnAlF5 und sein Einfluß auf die sublimative Reinigung von AlF3Professor Heinrich Oppermann zum 60. Geburtstag gewidmet (1994)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 620 (1994), S. 1976-1982 
    Details
    ISSN: 0044-2313
    Keywords: Gas complex ; MnAlF5 ; mass spectroscopy ; enthalpie of dissociation ; ab initio calculation ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The Gas Complex MnAlF5 and its Influence on the Purification of AlF3 by SublimationThe gas complex MnAlF5 has been determined mass spectroscopically by the ions MnAlF5+ and MnAlF4+. The gas complex MnAlF5 is formed above 973 K by heating up mixtures of AlF3/MnF2 or AlF3 · 3 H2O endowed with Mn2+ or by heating up solid MnAlF5 too. At 1 008 K the enthalpie of dissociation is 197 kJ/mole. The equilibrium structures of the high spin molecule MnAlF5 (S = 5/2) were examined with ab initio calculations at the HF-level by comlete gradient optimizing. Two minimum structures were found on the potential energy surface. A bidentate fluorine bridged structure was found to be the most stable at the HF-level. Vibrational frequencies and thermodynamic functions of complex formation were estimated for both minimum structures. The importance of the formation of the gas complex for the separation of MnF2 and AlF3 by sublimation is discussed.
    Notes: Der Gaskomplex MnAlF5 wurde bei massenspektrometrischen Untersuchungen durch die Ionen MnAlF5+ und MnAlF4+ nachgewiesen; er bildet sich beim Aufheizen von AlF3/MnF2-Gemengen, Mn-dotiertem AlF3 · 3 H2O bzw. festem MnAlF5 oberhalb 973 K. Die experimentell ermittelte Dissoziationsenthalpie bei 1 008 K für den Zerfall MnAlF5(g) = MnF2(g) + AlF3(g) beträgt 197 kJ/mol. Die Gleichgewichtsstrukturen von MnAlF5(g) (high spin; S = 5/2) wurden durch ab initio Berechnungen auf HF-Niveau durch vollständige Gradientenoptimierung ermittelt. Zwei Minimumstrukturen wurden gefunden. Eine zweifach F-verbrückte Ringstruktur ist auf HF-Niveau die stabilste. Schwingungsfrequenzen und thermodynamische Komplexbildungsfunktionen werden für beide Minimumstrukturen angegeben. Die Bedeutung des Gaskomplexes für die sublimative Trennung von MnF2 und AlF3 wird diskutiert.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19946201123
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  • 2
    Electronic Resource
    Electronic Resource
    Metal ion distribution and solubility of Mn1-xCux(HCOO)2 · 2 H2O Mixed Crystals [1-5] (1994)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 620 (1994), S. 1793-1798 
    Details
    ISSN: 0044-2313
    Keywords: Manganese formate dihydrate, copper formate dihydrate, mixed crystals ; solubility, unit cell dimensions ; IR spectra, Raman spectra ; metal ion distribution ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Verteilung der Metallionen und Löslichkeit von Mn1-xCux(HCOO)2 · 2 H2O-MischkristallenDie Verteilung der Metallionen in Mn1-xCux(HCOO)2 · 2(H,D)2O-Mischkristallen auf beide Metall-Lagen wird mit Hilfe von IR- und Raman-Spektren analysiert. Der Einfluß der Metallionen zeigt sich insbesondere in den Spektralbereichen 3 200-3 400 cm-1 (vOH), 2 875-2 990 cm-1 (vCH), 2 300-2 500 cm-1 (vOD von matrixisolierten HDO-Molekülen), 1 350-1 400 cm-1 (symmetrische CO2-Streckschwingungen), 570-950 cm-1 (H2O-Librationen) und 490 cm-1 (M—O Gitterschwingungen). Die Verschiebung dieser Banden mit zunehmendem Kupfergehalt belegt, daß Cu2+ nur die von HCOO- koordinierte Lage M(1) besetzt. Die Stärke der Wasserstoffbrücken nimmt aufgrund des größeren synergetischen Effektes von Cu2+ beim Übergang von den Mangan- zu Kupfer-reichen Mischkristallen zu. Die Löslichkeit und die Gitterkonstanten von Mn1-xCux(HCOO)2 · 2 H2O werden mitgeteilt. Eutonischer Bereich: 0,65 ≥ x ≥ 0,5.
    Notes: The metal ion distribution on the two metal sites of monoclinic Mn1-xCux(HCOO)2 · 2(H,D)2O mixed crystals are studied by infrared and Raman spectroscopic methods. The spectral regions 3 200-3 400 cm-1 (vOH), 2 875-2 990 cm-1 (vCH), 2 330-2 500 cm-1 (vOD of matrix isolated HDO molecules), 1 350-1 400 cm-1 (symmetric CO2 stretching modes), 570-950 cm-1 (H2O librations), and 490 cm-1 (M—O lattice modes) are mostly sensitive to the metal ions present. The frequency shifts of these bands with increasing content of copper show that Cu2+ prefers the M(1) site, coordinated by HCOO- only. The strengths of the hydrogen bonds increase on going from manganese to copper formate, due to the increased synergetic effect of Cu2+. Solubility and X-ray data of the mixed crystals are included. Irrespective of the same crystal structure, two series of mixed crystals are formed: eutonic area at 0.65 ≥ x ≥ 0.5.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19946201022
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  • 3
    Electronic Resource
    Electronic Resource
    Über die katalytische Isomerisation des n-Heptans, n-Octans und α-Hexens unter Druck (1935)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 68 (1935), S. 1-5 
    Details
    ISSN: 0365-9631
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19350680102
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  • 4
    Electronic Resource
    Electronic Resource
    Übergangsmetall-Silyl-Komplexe, 48. Synthese neuartiger heteronuklearer Silyl-Zweikernkomplexe (OC)3(R3Si)Fe(μ-PR′R″)Pt(1,5-COD)(Fe-Pt), Phosphan-Austauschreaktionen an (OC)3 (R3Si)Fe(μ-PR′R″)Pt(PPh3)2(Fe - Pt) und Darstellung der Dihydrido-Komplexe [(OC)3Fe(μ-PPh2)(μ-H)2Pt(PR3)2][BF4](Fe - Pt) (1994)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 127 (1994), S. 295-304 
    Details
    ISSN: 0009-2940
    Keywords: Heterobimetallic complexes ; Iron complexes ; Platinum complexes ; Silyl complexes ; Phosphido bridges ; Hydrido complexes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Transition Metal Silyl Complexes, 48[1]. - Synthesis of the New Heterobimetallic Dinuclear Silyl Complexes (OC)3(R3Si)-Fe(μ-PR′R″)Pt(1,5-COD)(Fe-Pt), Phosphane Exchange Reactions of (OC)3(R3Si)Fe(μ-PR′R″)Pt(PPh3)2(Fe-Pt), and Preparation of the Dihydrido complexes [(OC)3Fe(μ-PPh2)(μ-H)2Pt(PR3)2][BF4](Fe-Pt)The dinuclear, silyl-substituted complexes (OC)3(R3Si)Fe(μ-PR′r″)Pt(1,5-COD) (1) [μ-PR′R″ = PPh2, PCY2, PHPh; SiR3 = SiPh3, Si(OMe)3] were prepared in high yields by the oxidative addition of the hydrido complexes (OC)3(PHR′R″)Fe(H)-SiR3 to Pt(1,5-COD)2. Upon reaction of (OC)3(R3Si)Fe(μ-PR′R″)Pt(PPh3)2 [μ-PR′R″ = PPh2, PHCy; SiR3 = SiPh3, SiPh2Me, SiPhMeCl, Si(OMe)3] with two equivalents of PR‴3 (PMe3, PBu3, PEt3) or with one equivalent of chelating di-phosphanes (vdpp, dppe, dppm) both PPh3 ligands are displaced, and (OC)3(R3Si)Fe(μ-PR′R″)Pt(PR‴3)2 or (OC)3(R3Si)-Fe(μ-PR′R″)Pt[(PPh2)2X] (X = C=CH2, C2H4, CH2) are formed, respectively. When one equivalent of PMe3 is used, only the PPh3 ligand trans to the μ-PPh2 bridge is substituted, and (OC)3(Ph3Si)Fe(μ-PPh2)Pt(PPh3)(PMe3 is formed. The 1,5-COD ligand in 1 is displaced by P(OR)3 to give (OC)3-(Ph3Si)Fe(μ-PPh2)Pt[P(OR)3]2 (R = Me, Ph). The complexes (OC)3(Ph3Si)Fe(μ-PPh2)Pt(PMe3)2and (OC)3(Ph3Si)Fe(μ-PPh2)Pt[(PPh2)2C=CH2] were characterized by X-ray structure analysis. The short Fe-Si distances [233.0(2) and 235.6(3) pm] and the infrared v(CO) absorptions indicate that the Fe-Pt bonds are quite polar. Protonation of (OC)3(Me2-PhSi)Fe(μPPh2)Pt(PPh3)2 with CF3COOH gives the hydrido-bridged complex [(OC)3(Me2PhSi)Fe(μ-PPh2)(μ-H)Pt-(PPh3)2][O2CCF3]. Upon addition of an excess of HBF4 · Et2O to (OC)3(R3Si)Fe(μ-PPh2)Pt(PPh3)2 (R = Ph, OMe), (OC)3-Si)Fe(μ-PPh2)Pt[Pt[P(OMe)3]2 or (OC)3(Ph2MeSi)Fe(μ-PPh2)-Pt(dppe) R3SiF is split, and the corresponding μ-dihydrido complexes [(OC)3Fe(μ-PPh2)(μ-H)2Pt(PR3)2][BF4] are obtained.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19941270204
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  • 5
    Electronic Resource
    Electronic Resource
    Synthesis and Structure of Organotin(IV) Complexes of Maltol (1994)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 127 (1994), S. 1895-1900 
    Details
    ISSN: 0009-2940
    Keywords: Tin, diorganyl-, bis(maltolate) ; Tin, butyl-, tris(maltolate) ; Tin, tributyl-, maltolate ; Tin, dichloro-, bis(mal-tolate) ; Maltolates, tin ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A series of organotin(IV) maltol complexes R4  -  xSnLx (1-4, 6; x = 1-3) and the dichloro-compound Cl2SnL2 (5) have been prepared and characterized on the basis of their IR-, 1H-, 13C- and 119Sn-NMR data. While an X-ray crystal structure analysis of Ph2SnL2 (4) and Cl2SnL2 (5) reveals distorted cis-octahedral structures, the Me2SnL2 molecule (2) adopts a skew-trapezoidal bipyramidal configuration with a very significant difference in the Sn-O(keto) bond distances. The tris-maltol complex BuSnL3 (6) exhibits a distorted pentagonal-bipyramidal geometry with the butyl carbon and a hy-droxy oxygen constituting the axial orientations.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19941271013
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  • 6
    Electronic Resource
    Electronic Resource
    Über den Dampfdruck des Hexachloräthans (1935)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 223 (1935), S. 213-216 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19352230304
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  • 7
    Electronic Resource
    Electronic Resource
    Die Inversion von Rohrzuckerlösung im tropischen Sonnenlicht (1935)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 225 (1935), S. 24-28 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Versuche über die Inversion von Rohrzuckerlösungen durch HCl und H2SO4 im tropischen Sonnenlicht führen zu dem Ergebnis, daß das Licht allein die Inversion bewirkt; die Inversion wird erhöht bei Zusatz von Katalysatoren, so daß Katalysator und Belichtung einander unterstützen. Hierdurch werden DHAR'S Untersuchungen über den Einfluß des tropischen Sonnenlichtes auf die Inversion von Zuckerlösungen bestätigt.
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19352250103
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  • 8
    Electronic Resource
    Electronic Resource
    Über eine neue Spaltung des Hyposulfits und über Kobaltsulfoxylat (1935)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 222 (1935), S. 17-40 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Aus Kobaltsalz und Na2S2O4 wird Kobaltsulfoxylat dargestellt. Es ist das erste, sicher nachgewiesene Salz der hypothetischen Sulfoxylsäure.2. Es wird gezeigt, daß Na2S2O4 mit Kobaltsalz quantitativ in schwerlösliches Kobaltsulfoxylat und Alkalisulfit gespalten werden kann.3. Die Reaktionen des Kobaltsulfoxylats und seine Umsetzung mit anderen Metallsalzen wurden untersucht.
    Additional Material: 7 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19352220104
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  • 9
    Electronic Resource
    Electronic Resource
    Die Gasphasenstrukturen von CF3NBr2 und (CF3)2NBr (1994)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 620 (1994), S. 353-356 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The Gas Phase Structures of CF3NBr2 and (CF3)2NBrThe gas phase structures of the trifluoromethyl bromoamines CF3NBr2 and (CF3)2NBr were determined by electron diffraction. CF3NBr2: N—Br = 188.0(3), N—C = 148.1(13) pm, BrNBr = 111.1(6)° and BrNC = 107.3(8)°; (CF3)2NBr: N—Br = 186.9(4), N—C = 144.9(7) pm, BrNC = 114.9(9)° and CNC = 118.6(24)°. The results for these bromoamines are compared to those for the analogous fluoro and chloroamines.
    Notes: Die Gasphasenstrukturen der trifluormethylierten Bromamine CF3NBr2 und (CF3)2NBr wurden durch Elektronenbeugung bestimmt. CF3NBr2: N—Br = 188,0(3), N—C = 148,1(13) pm, BrNBr = 111,1(6)° und BrNC = 107,3(8)°; (CF3)2NBr: N—Br = 186,9(4), N—C = 144,9(7) pm, BrNC = 114,9(9)° und CNC = 118,6(24)°. Diese Werte für die Bromamine werden mit denen für die analogen Fluor- und Chloramine verglichen.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19946200225
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  • 10
    Electronic Resource
    Electronic Resource
    Über die Kristallstrukturen von CH3PF2H+AsF6- und CH3PF2H+SbF6- und eine einfache Darstellung von CH3PF2 (1994)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 620 (1994), S. 509-513 
    Details
    ISSN: 0044-2313
    Keywords: (difluoro)methylphosphine ; (difluoro)methylphosphonium salts ; preparation ; single crystall X-ray structure ; vibrational and NMR spectra ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Crystal Structures of CH3PF2H+AsF6- and CH3PF2H+SbF6- and a simple Method for Preparation of CH3PF2A simple method for preparation of CH3PF2 from CH3PCl2 is reported. The phosphonium salts CH3PF2H+MF6- are obtained by the reaction of CH3PCl2 with superacidic systems HF/MF5 (M = As, Sb). CH3PF2H+SbF6- crystallizes in the space group P1 with a = 548.4(4) pm, b = 695.5(8) pm, c = 960.2(9) pm, α = 94.68(5)°, β = 97.19(6)°, γ = 94.41(6)° and Z = 2. CH3PF2H+SbF6- crystallizes in P1 with a = 554.3(3), b = 724.2(4), c = 970.4(5), α = 94.73(4)°, β = 96.14(5)°, γ = 95.30(4)°.
    Notes: Es wird über eine einfache Darstellung von CH3PF2 aus CH3PCl2 berichtet, welches in den supersauren Systemen HF/MF5 (M = As, Sb) zu den Phosphoniumsalzen CH3PF2H+MF6- protoniert wird. CH3PF2H+AsF6- kristallisiert in der Raumgruppe P1 mit a = 548,4(4) pm, b = 695,5(8) pm, c = 960,2(9) pm, α = 94,68(5)°, β = 97,19(6)°, γ = 94,41(6)° und Z = 2, das isostrukturelle CH3PF2H+SbF6- mit a = 554,3(3), b = 724,2(4), c = 970,4(5), α = 94,73(4)°, β = 96,14(5)°, γ = 95,30(4)°.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19946200319
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