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'IR spectra' in keywords Facet   Publication Year 1985  [X]
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1985[X]
1Author    Gerhard Beber, Jürgen Hanich, Kurt DehnickeRequires cookie*
 Title    Reaktionen von Yanadiumtetrachlorid mit Trithiazylchlorid Reactions of Vanadium Tetrachloride with Trithiazylchloride Vanadiumtrichloride-Thiazylchoride Adduct, Tetrachlorovanadate(III)-S 2 N 2  
  Reference    (Z. Naturforsch. 40b, 9—12 [1985]; eingegangen am 24. September 1984) 
  Published    1985 
  Keywords    Adduct, Preparation, IR Spectra 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0009.pdf 
 Identifier    ZNB-1985-40b-0009 
 Volume    40 
2Author    Bernhard Czeska, Kurt DehnickeRequires cookie*
 Title    [P(C 6 H 5 ) 4 ] 2 S 8 : Synthesis and IR Spectrum  
 Abstract    [P(C 6 H 5)4] 2 S g was prepared from Na 2 S 4 and PPh 4 Cl in ethanol solution and characterized by its IR spectrum. 
  Reference    (Z. Naturforsch. 40b, 120—121 [1985]; eingegangen am 28. September 1984) 
  Published    1985 
  Keywords    Tetraphenylphosphonium Octasulfide, Synthesis, IR Spectra 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0120_n.pdf 
 Identifier    ZNB-1985-40b-0120_n 
 Volume    40 
3Author    H. Eribert, W. Adle, Kurt Dehnicke, D. Ieter FenskeRequires cookie*
 Title    (AsPh4)4[CrCl4(/J-N2S2)]4 * 8 CH2C12; Synthese, IR-Spektrum und Kristallstruktur (A sPh4)4[CrCl4(w-N2S2)]4 -8 CH 2C12; Synthesis, IR Spectrum and Crystal Structure  
 Abstract    Trithiazylchloride, (NSC1)3, reacts with metallic chrom ium, with chromium hexacarbonyl, with CrCl3-3 thf, as well as with chrom ium (VI) oxide to form mixtures, in which S4N 3®[CrCl4(N 2S2) ] 0 can be identified as the major product. This com pound reacts with tetraphenylarsonium chloride in dichlorom ethane to form the title com pound, which we have characterized by IR spectroscopy and an X-ray crystal structural analysis. (A sP h4)4[CrCl4(N 2S2)]4 -8 C H 2C12 crystallizes m onoclini-cally in the space group C 2 /c with four formula units per unit cell and with the follow ing lattice constants at —100 °C: a = 2146, b = 2033, c = 3137 pm; ß = 96.0° (9918 independent observed reflexions, R = 0.064). The com pound consists o f A sPh4® ions, tetrameric anions [CrCl4(N 2S2)]44e and included C H 2C12 m olecules. The chromium atom s of the anions occupy the corners o f a nearly ideal square; they are connected via the N -atom s o f planar N 2S2-rings, which are oriented perpendicularly to the Cr4-plane. The chromium atom s com plete their distorted octahedral coordination with four terminal chlorine atom s, the axial ones o f which form short Cl---S-contacts o f average 310 pm to the S-atom s o f the N 2S2-rings. 
  Reference    Z. Naturforsch. 40b, 1314—1319 (1985); eingegangen am 2. Mai 1985 
  Published    1985 
  Keywords    Trithiazylchloride, IR Spectra, Crystal Structure 
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 Identifier    ZNB-1985-40b-1314 
 Volume    40 
4Author    Udo Demant, Elke Conradi, Ulrich Müller, Kurt DehnickeRequires cookie*
 Title    Formamidinhim-Hexachloroferrat(III) Synthese und Kristallstruktur Formamidinium-Hexachloroferrate(III) Synthesis and Crystal Structure  
 Abstract    [HC(NH 2) 2 ] 3 FeCl 6 was obtained together with other products from the reaction of S 4 N 4 with HCl in H 2 CC1 2 in the presence of FeCl 3 . Its crystal structure was determined from X-ray diffraction data (473 in-dependent observed reflexions, R = 0.047). Lattice constants: a = 961.6, c — 876.4 pm; tetragonal, space group P4 2 /m, Z = 2. Of the two crystallo-graphically independent formamidinium ions HC(NH 2) 2 ®, one exhibits positional disorder; the other one has C—N bond lengths of 128 pm. The FeCl 6 30 ions have symmetry C 2h , but the deviation from O h is small. 
  Reference    Z. Naturforsch. 40b, 443—445 (1985); eingegangen am 6. November 1984 
  Published    1985 
  Keywords    Formamidinium-Hexachloroferrate(III), Synthesis, IR Spectra, Crystal Structure 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0443_n.pdf 
 Identifier    ZNB-1985-40b-0443_n 
 Volume    40 
5Author    Wolfgang Gerhartz, Friedrich-Wilhelm Grevels, WernerE. Klotzbücher, ErnstA. Koerner Von Gustorf, RobinN. PerutzRequires cookie*
 Title    Low-Temperature Matrix Photochemistry of (f/ 4 -Diene)tetracarbonylchromium Complexes  
 Abstract    Photolysis of (^ 4 -diene)Cr(CO) 4 complexes (diene = butadiene, trans,trans-2,4-hexadiene, 2,3-dimethylbutadiene) in Ar, N 2 , and CO matrices at 10-12 K was monitored by infrared and UV-Vis spectroscopy. In argon and dinitrogen matrices loss of CO ist the predominant photoreaction. The resulting fac-(rf-diene)Cr(CO) 3 can take up N 2 from the matrix to form (?7 4 -diene)Cr(CO) 3 (N 2). In the case of the hexadiene complex this process requires matrix an-nealing subsequent to photolytic loss of CO. Photolysis in CO matrices, by contrast, results in stepwise displacement of the diene ligand, yielding (/7 2 -diene)Cr(CO) 5 and ultimately Cr(CO) 6 . 
  Reference    Z. Naturforsch. 40b, 518—523 (1985); received November 13 1984 
  Published    1985 
  Keywords    Matrix Isolation, Photochemistry, Carbonylchromium Diene Complexes, IR Spectra 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0518.pdf 
 Identifier    ZNB-1985-40b-0518 
 Volume    40 
6Author    Thomas Godemeyer, Alexander Berg, Hans-Dieter Groß, Ulrich Müller, Kurt DehnickeRequires cookie*
 Title    ji-Nitridokomplexe von Wolfram(VI) Die Kristallstruktur von PPh4[W2NCl10] /<-Nitrido Complexes of Tungsten(VI) The Crystal Structure of PPh4[W2NCl10]  
 Abstract    W2NC19 was obtained as a brilliant red crystal powder from tungsten hexachloride and tris(trim ethylsilyl)am ine. A ccording to its IR spectrum it has dimeric m olecules [W 2NC19]2 with bridging chlorine atom s. Its reaction with tetraphenylphosphonium chloride yields PPh4[W2N C l10], and with phosphorus oxide chloride W 2NCl9 O PCl3 is obtained; both are soluble in dichlorom ethane. The crystal structure of PPh4[W2N C l10] was determined_ by X-ray diffraction (2521 observed reflexions. R = 0.065). Crystal data: triclinic, space group P I , Z = 2, a = 1125.7, b — 1278.2, c = 1347.8 pm, a = 110.08, ß = 94.55, y = 111.55°. The structure consists o f PPh4® ions which are arranged to (PPh4®)2 pairs about inversion centres, and o f [W2N C l10]e anions. The latter possess an alm ost linear W NW group (173°) with slightly different WN bond lengths o f 179 and 188 pm corresponding to double bonds. Each tungsten atom has an octahedral coordination. The WC1 bonds trans to the nitrido ligand are about 9 pm longer than the bonds in the cis positions. 2. Synthesen und IR-Spektren der /i-Nitridokomplexe W2NC19 erhält man gemäß Gl. (1) durch Um set­ zung von Wolframhexachlorid mit Tristrimethylsilyl-amin in Trimethylchlorsilan als Lösungsmittel: 2 WC16 + N(SiMe3) 3 < 9 °C> W2NC19 + 3 Me3SiCl (1) Zur Herstellung eines reinen Produktes hat sich die Anwendung von Trimethylchlorsilan, in dem sich WC16 beträchtlich löst, als ebenso bedeutsam erwie­ sen wie die Kühlung des Reaktionsansatzes < 9 °C. Erhöht man die Temperatur, so findet bereits bei 20 °C langsam und ausschließlich die Bildung des auch auf andere Weise zugänglichen WNC13 [1] statt. Wählt man in diesem Fall das Mengenverhältnis der Reaktanden nach (1), so läßt sich schließlich die Hälfte des WC16 zurückgewinnen. Bei Anwendung molarer Mengen 1:1 erhält man direkt reines WNC13: WC16 + N(SiM e3) 3 2 0 °C > WNC13 + 3 Me3SiCl (2) Für den Mechanismus der Reaktion (1) nehmen wir einen stufenweisen Verlauf an, bei dem sukzessive Trimethylchlorsilan abgespalten wird. Erstes mögli­ ches Zwischenprodukt wäre dann Cl5WN(SiMe3)2, das wir allerdings nicht isolieren konnten. Die A b­ spaltung eines zweiten Trimethylchlorsilans führt 0 ® dann zur Bildung des Imids C14W =N —SiMe3, das 
  Reference    Z. Naturforsch. 40b, 999—1004 (1985); eingegangen am 4. April 1985 
  Published    1985 
  Keywords    «-Nitrido C om plexes Synthesis, IR Spectra, Crystal Structure 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0999.pdf 
 Identifier    ZNB-1985-40b-0999 
 Volume    40 
7Author    P. Io, K. Oziej, M. Anfred, M. UtterRequires cookie*
 Title    Conformational Studies of Synthetic Polyethylene Glycol Bound Substance P and its Lower Analogues  
 Abstract    Institute o f Organic Chemistry, Johannes-G utenberg-U niversität, D -6500 Mainz H ans-U lrich G rem lich, G ü n te r H ölzem ann M edical Chemistry Research D e p t., E. M erck, The synthesis o f Substance P (SP) bound at the C-terminal m ethionine to polyethylene glycol m onom ethyl ether (M -P E G) is described. SP-PEG-M is obtained in good yield by the liquid-phase peptide synthesis. G el perm eation chromatography reveals that aggregated forms o f the PEG -bound peptides are absent in CHC13. CD and IR spectra point to a /3-turn located at the N-terminal part o f SP-PEG -M . In binding studies and in vivo assays the described com pounds are devoid of biological activity. 
  Reference    Z. Naturforsch. 40b, 1570—1574 (1985); received June 19 1985 
  Published    1985 
  Keywords    Substance P, Polyethylene G lycol, C D, IR Spectra, /3-Turn 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-1570.pdf 
 Identifier    ZNB-1985-40b-1570 
 Volume    40 
8Author    HeribertW. Adle, Elke Conradi, Ulrich Müller, Kurt DehnickeRequires cookie*
 Title    Cyclothiazeno-oxo-diazidowoIframat(VI) Die Kristallstruktur von (AsPh4)2[W(N3S2)(0)(N3)2]2 Cyclothiazeno Oxodiazidotungstate(VI) The Crystal Structure of (A sPh4)2[W (N3S2)(0 )(N 3 )2]2  
 Abstract    A new, im proved m ethod of synthesis for the cyclothiazeno complex A sPh4[WCl4(N 3S2)] con­ sists of the reaction of Na2W 0 4 with molten trithiazyl chloride (NSC1)3 followed by treatm ent with A sPh4Cl in C H 2C12. Through the reaction with silver azide suspended in C H 2C12 in the presence of m oisture, black crystalline (A sPh4)2[W(N3S2)(0)(N 3)2]2 is obtained. Its IR spectrum and its crys­ 
  Reference    Z. Naturforsch. 40b, 1626—1630 (1985); eingegangen am 28. A ugust 1985 
  Published    1985 
  Keywords    Cyclothiazeno O xodiazidotungstate(V I), Synthesis, IR Spectra, Crystal Structure 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-1626.pdf 
 Identifier    ZNB-1985-40b-1626 
 Volume    40 
9Author    Markus Wieber, Dieter Wirth, Christian BurschkaRequires cookie*
 Title    Darstellung und Struktur einiger i/ 5 -Cyclopentadienyldicarbonyleisenbismut-Verbindungen Cp(CO) 2 FeBiX 2 mit fünffach koordiniertem Bismutatom Synthesis and Structure of Some ?7 5 -Cyclopentadienyldicarbonylironbismuth Compounds Cp(CO) 2 FeBiX 2 with Five-Coordinated Bismuth Atoms  
 Abstract    The synthesis and the spectroscopic properties of the title compounds Cp(CO) 2 FeBiX 2 (with X = SC(S)NEt 2 and SC(S)OMe) are described. The crystal structure of Cp(CO) 2 FeBi[SC(S)NEt 2 ] 2 was investigated by an X-ray analysis. 
  Reference    Z. Naturforsch. 40b, 258—262 (1985); eingegangen am 11. Oktober 1984 
  Published    1985 
  Keywords    Synthesis, Structure, // 5 -Cyclopentadienyldicarbonylironbismuth Compounds, NMR Spectra, IR Spectra 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0258.pdf 
 Identifier    ZNB-1985-40b-0258 
 Volume    40 
10Author    W. Preetz, H.-J SteinebachRequires cookie*
 Title    Darstellung und Charakterisierung der Chloro-Bromo-Iridate(III) und -(IV) einschließlich der Stereoisomeren Preparation and Characterisation of Chloro-Bromo-Iridates(III) and -(IV) Including Stereoisomers  
 Abstract    The mixed chloro-bromo complexes [IrCl"Br 6 _"] 2 ~ and [IrCl"Br 6 _"] 3 ~, n = 1—5, were separated by ion exchange chromatography on diethylaminoethylcellulose. Due to the stronger trans-effect of Br compared with Cl, on treatment of [IrBr 6 ] 2 ~ -3 ~ with Cl" nearly pure c/s//aoisomers and by reaction of [IrCl 6 ] 2_,3 ~ with Br" trans/mer-isomers for n = 2,3,4 were formed. The stereoselectivi-ty of successive ligand exchange reactions is better for the Ir(III) than for the Ir(IV) system. The diamagnetic Ir(III) and the paramagnetic Ir(IV) complexes can be interconverted reversibly by redox reactions at low temperature. As shown by cyclic voltammetric measurements, the redox potentials within the series [IrCl"Br 6 _"] 2 ~ /3 ~ are linearly dependent on n. In aqueous solution the normal potentials are in the range of E" = 0.838 V ([IrBr 6 ] 2w3 ~) to E 0 = 0.908 V ([IrCl 6 ] 2_/3_). The vibrational spectra of the mixed ligand complexes are assigned according to point groups D 4h , C 4v , C 3v and C 2v . They are similar for corresponding chloro-bromo-iridates, but distinguished by a shift of 10—25 cmto higher wave numbers for most of the stretching vibrations going from Ir(III) to Ir(IV). 
  Reference    Z. Naturforsch. 40b, 745 (1985); eingegangen am 1. Februar 1985 
  Published    1985 
  Keywords    Chloro-Bromo-Iridates(III) and -(IV), trans-Effect, Cyclic Voltammograms, IR Spectra, Raman Spectra 
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 Identifier    ZNB-1985-40b-0745 
 Volume    40 
11Author    KlausD. Ieter Scherfise, FrankW. Eller, Kurt DehnickeRequires cookie*
 Title    Die  
 Abstract    Kristallstrukturen von [(CH3)P(C6H5)3][C(N02)3] und [(ICH2)P(C6H5)3][C (N 0 2)3] Crystal Structures of [(CH3)P(C6H ?)3][C(N0 2)3] and [(IC H 2)P(C 6H 5)3][C(N 0 2)3] The title compounds and the trinitro methanide salts with PPh4~ and N-methyl pyridinium cations are prepared from K[C(NOi)3] and the chlorides of the organic cations in aqueous solu­ tion. They form thermally stable, yellow crystalline solids. The IR spectra are reported. The crystal structures of [(CH3)P(C6H 5)3][C(N0 2)3] (2) and [(ICH2)P(C6H 5)3][C(N0 2)3] (3) are deter­ mined by the aid of X-ray methods. 2: space group P2,/c, Z = 4; a = 825, b = 1404, c = 1771 pm; ß = 97.4°; 1891 independent observed reflexions. R — 0.063. 3: space group P 2t/c, Z = 4; a = 848, b = 1364, c -1869 pm; ß = 99.9°; 2380 independent observed reflexions. R = 0.036. Both compounds are ionic and consist of [(CH3)P(C6H5)3]® and [(ICH2)P(C6H5)3] cations, resp., without special features, and trinitro methanide ions. In the anions the carbon atoms are almost coplanar with the N-atoms of the nitro groups with mean C -N bond lengths of 139 pm and mean NCN bond angles of 120°, suggesting sp2 hybridisation. In 3 the torsional angles between CN3 plane and the N 0 2 groups range from 15° to 32°, whereas in 2 two of the N 0 2 groups are almost coplanar with the CN3 moiety (dihedral angles 0.3° and 8.1°) and one nitro group is disordered in two positions (dihedral angles 15.8° and 74.7°). 
  Reference    Z. Naturforsch. 40b, 906—912 (1985); eingegangen am 10. April 1985 
  Published    1985 
  Keywords    (Methyl)triphenylphosphonium Trinitromethanide, (Iodomethyl)triphenylphosphonium Trinitromethanide, Preparation, Crystal Structure, IR Spectra 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0906.pdf 
 Identifier    ZNB-1985-40b-0906 
 Volume    40 
12Author    Jürgen Hanich, Wolfgang Willing, Ulrich Müller, Kurt Dehnicke, Dieter RehderRequires cookie*
 Title    Cyclothiazeno-Vanadiumdibromid, VBr2(N3S2) Cyclo-Thiazeno Vanadium Dibromide, V B r2(N 3 S2)  
 Abstract    V B r 2(N 3S2) was synthesized by reaction o f VC12(N 3S2) with M e 3SiBr. It reacts with PPh4B r in dibromomethane solution to form (P P h 4) 2[V B r 3(N 3S2) ] 2. The compounds were characterized by their IR and 51V N M R spectra. The crystal structure o f V B r 2(N 3S2) was determined by X-ray diffraction (2060 reflexions, R = 0.114). Crystal data: triclinic, space group P I , a — 586.4, b = 794.2, c — 744.6 pm, a = 89.25, ß = 108.58, y — 99.67°, Z = 2. The vanadium atoms form planar, six-membered rings with the N 3S2 groups, with short V N distances (172 and 185 pm). Bromine-bridged dimers are associated via V —N links to form chains in a similar way as in some tetrahalides. The structure is similar to that o f VC12(N 3S2), but the chains are rotated by 17° along their axes. 
  Reference    Z. Naturforsch. 40b, 1457—1462 (1985); eingegangen am 2. Juli 1985 
  Published    1985 
  Keywords    Cyclo-Thiazeno Vanadium Dibrom ide, Synthesis, IR Spectra, 51V N M R Spectra, Crystal Structure 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-1457.pdf 
 Identifier    ZNB-1985-40b-1457 
 Volume    40 
13Author    Ramesh Kapoor, Pratibha Kapoor, Ramneek SharmaRequires cookie*
 Title    Reactions of Chromyl Chloride with Carboxylic Acids and Carboxylic Acid Anhydrides  
 Abstract    Chromyl Chloride reacts with carboxylic acids [RCOOH where R — C2H5, AZ-C3H7, CH2CI, CHC1 2 and CCI3] to give reduced chromium(III) carboxylates, [Cr 3 0(00CR) 6 (H 2 0) 3 ]Cl. Magne-tic susceptibility, UV-visible and IR measurements are all consistent with their trinuclear basic structures. Reactions of chromyl chloride with carboxylic acid anhydrides [(RCO) z O where R = CH 3 , C 2 H 5 and «-C 3 H 7 ] give dinuclear oxo-bridged complexes of the type, [Cr 2 0(00CR) 3 ]Cl. These compounds behave as non-electrolytes in polar organic solvents. IR spectra suggest the presence of bridging carboxylato groups containing Cr—O — Cr chains. Their low magnetic mo-ment values suggest polymeric structures exhibiting antiferromagnetic coupling between Cr atoms. 
  Reference    Z. Naturforsch. 40b, 247—250 (1985); received October 17 1984 
  Published    1985 
  Keywords    Chromyl Chloride, Trinuclear Basic Chromium(III) Carboxylate, Dinuclear Oxochromium(III) Carboxylate, Magnetic Susceptibility, IR Spectra, UV-Vis Spectra 
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 Identifier    ZNB-1985-40b-0247 
 Volume    40 
14Author    Ingo-Peter Lorenz, WolfgangH. Iller, Michael ConradRequires cookie*
 Title    Nukleophile Substitution an Thionyl-und Sulfurylchlorid mit Metallaten  
 Abstract    Synthese und Struktur der SO-bzw. S 0 2-Komplexe [(C6H50) 3P]2(C 0)2F e (S 0 /J) (n = 1, 2) Nucleophilic Substitution at Thionyl-and Sulfuryl Chloride by M etallates. Synthesis and Structure of the SO-and S 0 2-Complexes [(C6H 50) 3P]2(C 0) 2Fe(S0") (n = 1,2) 
  Reference    Z. Naturforsch. 40b, 1383 (1985); eingegangen am 22. April 1985 
  Published    1985 
  Keywords    Nucleophilic Substitution at SOCl2 and S 0 2C12, Oxidation of SO Complex, IR Spectra, NMR Spectra, X-Ray 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-1383.pdf 
 Identifier    ZNB-1985-40b-1383 
 Volume    40