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  • 1995-1999  (1,030)
  • 1960-1964  (1,277)
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  • 1
    ISSN: 0044-2313
    Keywords: Trifluormethyliodinechloridefluoride ; vibrational spectra ; 19F NMR spectra ; mass spectra ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Chlorofluorinate with Trifluoromethylhypochlorite CF3OCl. Preparation and Spectroscopic Characterization of Trifluormethyliodinechloridefluoride CF3I(Cl)FThe preparation of a new iodine(III) compound, trifluormethyliodinechloridefluoride CF3I(Cl)F, via oxidative addition of trifluoromethylhypochlorite CF3OCl to trifluoromethyliodide CF3I is described. The thermolabile compound has been characterized by i.r., Raman, 19F NMR, and mass spectroscopy.
    Notes: Die Darstellung einer neuen Iod(III)-Verbindung, Trifluormethyliodchloridfluorid CF3I(Cl)F durch oxidative Addition von Trifluormethylhypochlorit CF3OCl an Trifluormethyliodid CF3I, wird mitgeteilt. Die thermolabile Verbindung wird durch IR-, Raman-, 19F-NMR- sowie Massenspektroskopie charakterisiert.
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 621 (1995), S. 1731-1734 
    ISSN: 0044-2313
    Keywords: Indium ; Phosphorus ; Heterocubane ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: [{Cp(CO)3Mo}4In4(PSiMe3)4], an Organometallic In4P4-Heterocubane[{Cp(CO)3Mo}InCl2] reacts with P(SiMe3)3 in THF as solvent to form [{Cp(CO)3Mo}4In4(PSiMe3)4] 1. 1 crystallizes in the space group P1. The lattice constants (at 208 K) are: a = 1 770.1(6), b = 1 490.3(6), c = 1 317.5(6) pm, α = 76.59(4),β = 88.54(3), γ = 88.98(3)°. According to the crystal structure analysis, 1 contains a slightly distorted In4P4-core with an alternating arrangement of In and P atoms. The In atoms are coordinated roughly tetrahedrally by three PSiMe3 groups (In-P: 256.9(3)-262.3(3) pm) and a {Cp(CO)3Mo} substituent (In—Mo: 278.0(2)-279.5(3) pm).
    Notes: [{Cp(CO)3Mo}InCl2] reagiert mit P(SiMe3)3 in THF als Lösungsmittel zu [{Cp(CO)3Mo}4In4(PSiMe3)4] 1. 1 kristallisiert in der Raumgruppe P1 mit den Gitterkonstanten (bei 208 K): a = 1 770,1(6), b = 1 490,3(6), c = 1 317,5(6) pm, α = 76,59(4), β = 88,54(3), γ = 88,98(3)°. Nach dem Ergebnis der Röntgenstrukturanalyse enthält 1 ein leicht verzerrtes In4P4-Heterokubangerüst mit einer alternierenden Anordnung von In- und P-Atomen. Die Indiumatome sind etwa tetraedrisch von drei PSiMe3-Gruppen (In-P: 256,9(3)-262,3(3) pm) und einem exocyclischen {Cp(CO)3Mo}-Rest (In-Mo: 278,0(2)-279,5(3) pm) umgeben.
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  • 3
    ISSN: 0044-2313
    Keywords: Titanocene cyanides ; Bis(biscyclopentadienylcyanotitanium) oxide ; Crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Cyanoderivate von Bis(cyclopentadienyl)titan(IV). Kristall- und Molekülstruktur von μ-Oxo-bis[(bis)(cyclopentadienyl)cyanotitan(IV)], [(η5-C5H5)2TiCN]2OBei der Umsetzung von KCN mit Cp2TiCl2 (Cp = μ5-C5H5) in siedendem Methanol entsteht Bis(cyclopentadienyl)methoxytitan(IV)cyanid, Cp2Ti(OCH3)CN, das an der Luft in das dinukleare sauerstoffverbrückte Derivat (Cp2TiCN)2O übergeht. Auf gleiche Weise wurde auch das Bis(methylcyclopentadienyl)analog [MeCp2TiCN]2O erhalten. Die Röntgenstrukturanalyse von (Cp2TiCN)2O ergab, daß die CN-Gruppe als einzähniger Ligand mit einem Abstand Ti—C von 2,158 Å und einem von der Linearität sehr wenig abweichenden Bindungswinkel Ti—C—N (177,7°) fungiert. Der Abstand Ti—O (1,836 Å) und der Bindungswinkel am Brücken-O-Atom (174,1°) sind “normal”. Ti weist eine annähernd tetraedrische Koordination auf. Die Strukturergebnisse werden mit denen analoger zweikerniger Titankomplexe verglichen.
    Notes: By the reaction of KCN with Cp2TiCl2 (Cp = η5-C5H5) in boiling methanol, bis(cyclopentadienyl)-methoxytitanium(IV) cyanide, Cp2Ti(OCH3)CN, is formed which in air is converted into the dinuclear oxygen-bridged derivative (Cp2TiCN)2O. By the same procedure, the bis(methylcyclopentadienyl) analogue [MeCp2TiCN]2O has been obtained. An X-ray diffraction study of (Cp2TiCN)2O has shown that the CN group acts as a unidentate ligand with a Ti—C bond length of 2.158 Å and a Ti—C—N bond angle of 177.7°, very close to linearity. The Ti—O bond distance, 1.836 Å, and the bond angle at the bridging O atom, 174.1°, are normal. The ligands are arranged in a nearly tetrahedral way around the Ti atoms. The structural results are compared to those for similar dinuclear titanium complexes.
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  • 4
    ISSN: 0044-2313
    Keywords: Phenylbismuth(III) dimesylamides ; bismuth(III) bis(dimesylamide)chloride ; bismuth(III) (dimesylamide)dichloride-12-crown-4(1/1) ; triphenylbismuth(V) (dimesylamide) chloride ; bis(triphenylarsane oxide)hydrogen(I) dimesylamide ; synthesis ; X-ray structures ; strong symmetrical O … H … O bond ; twelve-membered [BiOSNSO]2 ring ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Polysulfonyl Amines. LXIX. Novel Pnictogen Disulfonylamides: Synthesis of Bismuth Dimesylamides and Crystal Structures of the Twelve-Membered Cyclodimer [Ph2BiN(SO2Me)2]2 and of the Ionic Complex [H(OAsPh3)2]⊕(MeSO2)2N⊖The novel bismuth(III or V) disulfonylamides Ph2BiN(SO2Me)2 (1), PhBi[N(SO2Me)2]2 (2), PhBi[N(SO2Me)2]Br (3), Bi[N(SO2Me)2]2Cl (4), Bi[N(SO2Me)2]Cl2 · 12-crown-4 (5) and Ph3Bi[N(SO2Me)2]Cl (6) were obtained by acidolysis of Ph3Bi with HN(SO2Me)2 (→ 1), by metathesis of AgN(SO2Me)2 with Ph2BiCl (→ 1) or PhBiBr2 (→ 2, 3), by condensation of BiCl3 with Me3SiN(SO2Me)2 (→ 4; in presence of 12-crown-4: → 5), or by oxidative addition of ClN(SO2Me)2 to Ph3Bi (→ 6). Independently of the molar ratio employed, triphenylarsane oxide and dimesylamine form the crystalline 2/1 complex [H(OAsPh3)2]⊕(MeSO2)2N⊖ (7). The crystal packing of 7 (monoclinic, space group C2/c) consists of discrete cations displaying crystallographic Ci symmetry and a strong O … H … O hydrogen bond (H atom located on a centre of symmetry, O … O′ 241.2 pm, As—O … O′ 120°, As—O 168.3 pm), and chiral anions with crystallographic C2 symmetry (N—S 157.3 pm, S—N—S 122,9°). In the solid state, the bismuth(III) compound 1 (triclinic, space group P1) is a cyclodimer with crystallographic Ci symmetry, in which two Ph2Bi⊕ cations are connected through two (α-O, ω-O)-donating dimesylamide ligands to form a roughly twelve-membered [BiOSNSO]2 ring (Bi—O 239.7 and 246.6, O—S 148.0 and 145.4, S—N 157.7 and 159.2 pm, Bi—O—S 126.6 and 127.5°). The bismuth atom adopts a pseudo-trigonal-bipyramidal geometry (O—Bi—O 165.4, C—Bi—C 93.0, O—Bi—C 83.8 to 86.5°). The essentially similar conformations of the discrete anion in 7 and of the bidentate bridging ligand in 1 are discussed in detail.
    Notes: Die neuartigen Bismut(III oder V)-disulfonylamide Ph2BiN(SO2Me)2 (1), PhBi[N(SO2Me)2]2 (2), PhBi[N(SO2Me)2]Br (3), Bi[N(SO2Me)2]2Cl (4), Bi[N(SO2Me)2]Cl2 · 12-Krone-4 (5) und Ph3Bi[N(SO2Me)2]Cl (6) entstanden durch Acidolyse von Ph3Bi mit HN(SO2Me)2 (→ 1), durch Metathese von AgN(SO2Me)2 mit Ph2BiCl (→ 1) oder mit PhBiBr2 (→ 2, 3), durch Kondensation von BiCl3 mit Me3SiN(SO2Me)2 (→ 4; in Gegenwart von 12-Krone-4: → 5) oder durch oxidative Addition von ClN(SO2Me)2 an Ph3Bi (→ 6). Triphenylarsanoxid bildet mit Dimesylamin, unabhängig vom benutzten Stoffmengenverhältnis, den kristallinen 2/1-Komplex [H(OAsPh3)2]⊕(MeSO2)2N⊖ (7). Die Kristallpackung von 7 (monoklin, Raumgruppe C2/c) besteht aus diskreten Kationen mit kristallographischer C--Symmetrie und einer starken O … H … O-Brücke (H-Atom auf einem Inversionszentrum lokalisiert, O … O′ 241,2 pm, As—O … O′ 120°, AS—O 168,3 pm) sowie chiralen Anionen mit kristallographischer C2-Symmetrie (N—S 157,3 pm, S—N—S 122,9°). Die Bismut(III)-Verbindung 1 (triklin, Raumgruppe P1) bildet im festen Zustand ein Cyclodimer mit kristallographischer Ci-Symmetrie, in welchem zwei Ph2Bi⊕-Kationen mit zwei (α-O, ω-O)-koordinierenden Dimesylamid-Liganden zu einem nur schwach gewellten zwölfgliedrigen [BiOSNSO]2-Ring verknüpft sind (Bi—O 239,7 und 246,6, O—S 148,0 und 145,4, S—N 157,7 und 159,2 pm, Bi—O—S 126,6 und 127,5°). Das Bismutatom ist ψ-trigonal-bipyramidal koordiniert (O—Bi—O 165,4, C—Bi—C 93,0, O—Bi—C im Bereich 83,8 bis 86,5°). Die sehr ähnlichen Konformationen des diskreten Anions in 7 und des zweizähnig-verbrückenden Liganden in 1 werden im einzelnen diskutiert.
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  • 5
    ISSN: 0044-2313
    Keywords: 2,2-diamino-4,4,6,6-tetrachloro-2λ5,4λ5,6λ5-cyclotriphosphaza-1,3,5-trien-1-ium tetrachloro-μ-imino-diphosphate [P3N3HCl4(NH2)2]+[N(POCl2)2]- ; phosphazenium salt ; crystal structure, preparation ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Die Reaktion von [P3N3Cl4(NH2)2] mit [HN(POCl2)2]; Die Kristallstruktur des Phosphazeniumsalzes [P3N3HCl4(NH2)2]+[N(POCl2)2]-Diamidotetrachloro-cyclotriphosphazen reagiert mit dem Tetrachlorid der μ-Imido-diphosphorsäure unter Bildung der salzartigen Verbindung [P3N3HCl4(NH2)2]+ [N(POCl2)2]-, deren Identifikation durch Röntgenstrukturanalyse erfolgte. [P3N3HCl4(NH2)2]+ und [N(POCl2)2]- werden über Wasserstoffbrücken verknüpft. Die Protonierung am N-Ringatom führt ebenso wie in den anderen Phosphazeniumsalzen zur beträchtlichen Änderung der endozyklischen P—N-Bindungslängen.
    Notes: The reaction of diaminotetrachloro-cyclotriphosphazene with tetrachloride of μ-imino-diphosphoric acid leads to the formation of the salt-like compound [P3N3HCl4(NH2)2]+[N(POCl2)2]- which identity was unambiguously established by means of X-ray structure analysis. The structure is composed of [P3N3HCl4(NH2)2]+ cations and [N(POCl2)2]- anions joined by a system of H-bonds. As in other phosphazenium salts, the protonation of the ring N atom leads to significant changes in the endocyclic P—N bond lengths.
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  • 6
    ISSN: 0044-2313
    Keywords: Metallocene bis-8-hydroxyquinolinates ; Titanium ; Zirconium ; Hafnium ; Crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Darstellung, Charakterisierung und Strukturuntersuchungen von neuen η5-Cyclopentadienylbis-8-hydroxychinolinatometall(IV)-KomplexenDurch die Umsetzung von M(η5-C5H4R)2Cl2 (M = Zr, Hf; R = H, Me, SiMe3) mit 8-Hydroxychinolin (oxH) bzw. 5-Chloro-8-hydroxychinolin (ox′H) in Dichlormethan bei 20°C entstehen die Komplexe M(η5-C5H4R)Clox2 bzw. M(η5-C5H4R)Clox2′. Eine Reaktion von Ti(η5-C5H5)Cl3 mit ox′H in Acetonitril ergibt Ti(η5-C5H5)Clox2′. Alle Komplexe wurden elementaranalytisch sowie IR- und 1H-NMR-spektroskopisch charakterisiert. Die Röntgenstrukturanalyse von M(η5-C5H5R)Clox2′ (M = Ti, Hf) zeigt, daß diese Moleküle, hinsichtlich achtfacher Koordination, am besten als annähernd dodekaedrisch und nicht als oktaedrisch beschrieben werden können. Bezüglich oktaedrischer Anordnung liegen die Stickstoffatome in einer cis-Konfiguration und die Sauerstoffatome in einer trans-Konfiguration vor. Dichlormethan cokristallisert mit dem Hafniumkomplex und besetzt eine Position auf der zweizähligen Achse. Die Strukturergebnisse werden mit denen analoger Verbindungen verglichen.
    Notes: By the interaction of M(η5-C5H4R)2Cl2 (M = Zr, Hf; R = H, Me, SiMe3) and 8-hydroxyquinoline (oxH) or 5-chloro-8-hydroxyquinoline (ox′H) in dichloromethane solution at 20°C, the compounds M(η5-C5H4R)Clox2 and M(η5-C5H4R)Clox2′ were prepared respectively. A similar reaction of Ti(η5-C5H5)Cl3 with ox′H in acetonitrile solution gave Ti(η5-C5H5)Clox2′. All complexes were characterized by elemental microanalysis and by IR and 1H NMR spectroscopy. X-ray analysis of M(η5-C5H5R)Clox2′ (M = Ti, Hf) shows that these molecules may be described in terms of stereochemistry of eight-coordination approximating dodecahedral geometry more closely than octahedral geometry. With respect to octahedral coordination, the nitrogen atoms lie in a cis-configuration and the oxygen atoms in a trans-configuration. Dichloromethane molecules co-crystallize with the hafnium complex and occupy a position on the 2-fold axis. The structural results are compared with those in related compounds.
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  • 7
    ISSN: 0044-2313
    Keywords: 1,4-Dimethylpiperazinium-tetrachlorometalates(II) ; cobalt, zinc ; crystal structures ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Halogenometalates of Transition Elements with N-heterocyclic Base Cations. I. The Crystal Structures of 1,4-Dimethylpiperazinium Tetrachlorocobaltate(II) and -zincate(II), (dmpipzH2)[MIICl4] (M = Co, Zn)The compounds (dmpipzH2)[MIICl4] crystallize in the monoclinic space group P21/m with a = 6.133(1), b = 14.306(1), c = 6.902(1) Å, β = 90.54(2)°, Z = 2 for M = Co and with a = 6.141(1), b = 14.282(1), c = 6.907(1) Å, β = 90.60(2)°, Z = 2 for M = Zn. The structures consist of tetrahedra [MCl4]2- and centrosymmetric cations (dmpipzH2)2+ in the chair form. Bifurcated hydrogen bridging bonds of the N—H … Cl type connect the nitrogen atom to two chloride ions. Two short distances C … Cl are interpreted in terms of C—H …Cl hydrogen bridges.
    Notes: Die Verbindungen (dmpipzH2)[MIICl4] kristallisieren monoklin in der Raumgruppe P21/m mit a = 6,133(1), b = 14,306(1), c = 6,902(1) Å, β = 90,54(2)°, Z = 2 für M = Co und mit a = 6,141(1), b = 14,282(1), c = 6,907(1) Å, β = 90,60(2)°, Z = 2 für M = Zn. In den Strukturen liegen Tetraeder [MCl4]2- und zentrosymmetrische (dmpipzH2)2+-Kationen in Sesselform vor. Es werden gabelförmige Wasserstoffbrückenbindungen des Typs N—H … Cl zu zwei Chloridionen gebildet. Zwei kurze Abstände C … Cl werden als C—H … Cl-Wasserstoffbrückenbindungen gedeutet.
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 302 (1960), S. 275-283 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: For the reductive purification of TiCl4 from the vanadium chlorides VCl4 and VOCl3 the following metals with and without catalyst and non-metals are applicable : Cu, Al/AlCl3, Al/J2, Zn/AlCl3, H2S, S and C/H2O; other reducing substances, as Al, Al/Hg, Zn, Mg, Mg/AlCl3, Fe and C, are ineffective. The reductive power of these substances is determined quantitatively.VCl4 can be removed selectively from a mixture of VCl4—VOCl3—TiCl4 with S as well as with C/H2O.TiCl4, obtained by chlorination of vanadium-contaminated Ti-ores in presence of coal, contains the vanadium as VOCl3.
    Notes: Zur reduktiven Entfernung der im TiCl4 gelösten flüssigen Vanadinchloride, VCl4 und VOCl3, wurden als anwendbare Reduktionsmittel erkannt: Cu, Al/AlCl3, Al/J2, Zn/AlCl3, Fe/AlCl3, H2S, S und C/H2O (AlCl3 und J2 dienen zur katalytischen Aktivierung der Metalle); als unbrauchbar erwiesen sich Al, Al/Hg, Zn, Mg, Mg/AlCl3, Fe und C. Das Reduktionsvermögen dieser Stoffe wird quantitativ bestimmt.VCl4 kann aus einem Gemisch von VCl4—VOCl3—TiCl4 sowohl mit S als auch mit C/H2O selektiv entfernt werden.Das durch Chlorierung von vanadinhaltigen Ti-Erzen in Anwesenheit von Kohle anfallende TiCl4 enthält das Vanadin in Form von VOCl3.
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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: Mitteilung der Raumgruppe und Dimensionen der Elementarzelle von Bis-dimethyl-glyoximo-diammin-Kobalt(III)-nitrat und des entsprechenden Chlorids.
    Notes: The crystals of bis-dimethyl glyoximino-diammine cobalt(III) nitrate are Monoclinic with Space-group P21/c and the cell-dimensions are a = 9.80 ± 0.03 Å, b = 6.32 ±. 02 Å, c = 12.47 ±. 04 Å, β = 97°. The crystal data indicates either a free rotation or a statistical distribution in two different orientations of the oxygen atoms round nitrogen of the nitrate ion.The crystals of the chloride complex are Tetragonal with Space-group P42 and the cell dimensions are a = 6.50 +. 02 Å, c = 25.2 ± 0.1 Å.
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  • 10
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The decomposition of formic acid vapor was examined on different crystal faces of a copper single crystal by means of a static method. The reaction rate is about 4 times larger on the (111) face than on the (100) face. There was no special catalytic activity on polycrystalline specimens. The results are discussed in detail.
    Notes: Nach einer statischen Methode wurde der katalytische Zerfall des Ameisensäuredampfes an verschiedenen Kristallflächen eines Kupfer-Einkristalls untersucht. Die Reaktion läuft an der (111)-Fläche etwa viermal schneller ab als an der (100)-Fläche. An Polykristallen tritt keine Aktivitätserhöhung gegenüber Einkristallen auf. Die Ergebnisse werden ausführlich diskutiert.
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