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141Author    W. Preetz, G. RimkusRequires cookie*
 Title    Darstellung von trans-[PtCl4Br2] 2 -und [PtClsBr] 2 - durch oxidative Addition an [PtCl4] 2 ~ Preparation of Jrarwi-[PtCl4Br2] 2 -and [PtCl5Br] 2 -by Oxidative Addition to [PtCl4] 2 ~  
 Abstract    The oxidative addition of Br2 to [PtCl4] 2-in HBr yields almost pure frans-[PtCl4Br2] 2-, in HCl nearly pure [PtClsBr] 2-, and in CH2C12 by a quantitative and stereospecific reaction completely pure £ram-[PtCl4Br2] 2 ~. This is confirmed by ion exchange chromatography on diethylaminoethyl cellulose and by analysis of the vibrational spectra in comparison with the IR and Raman spectra of the well-known species of the series [PtClnBr6-n] 2_ , n = 0-6. The literature concerning £rans-[PtCl4Br2] 2 ~ and other mixed ligand complexes is critically discussed. 
  Reference    Z. Naturforsch. 38b, 442—445 (1983); eingegangen am 8. Dezember 1982 
  Published    1983 
  Keywords    Oxidative Addition, £rans-Tetrachlorodibromoplatinate(IV), Pentachlorobromoplatinate(IV), IR Spectra, Raman Spectra 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-0442.pdf 
 Identifier    ZNB-1983-38b-0442 
 Volume    38 
142Author    Borislav Bogdanović, Martin Rubach, Klaus SeevogelRequires cookie*
 Title    ?f-Allyl-hydrogensulfidopalladium-und -platin-Komplexe ?7 3 -Allylmetal-Sulfur Complexes, IV [1] ?y 3 -A]lyl-hydrogensulfidopalladium and -platinum Complexes  
  Reference    Z. Naturforsch. 38b, 592—598 (1983); eingegangen am 28. Dezember 1982 
  Published    1983 
  Keywords    r/ 3 -Allyl-hydrogerisulfklopalladium Complexes, r/ 3 -Allyl-hydrogensulfidoplatinum Complexes, IR Spectra, Raman Spectra, NMR Spectra 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-0592.pdf 
 Identifier    ZNB-1983-38b-0592 
 Volume    38 
143Author    H.-G Srebny, W. Preetz, H. C. MarsmannRequires cookie*
 Title    Darstellung, n B-NMR-und Schwingungsspektren isomerenreiner Halogenohydrododecaborate X"B12H12 _n2_; X = CI  
 Abstract    , n = 1—3; X = Br, n = 1,2; X = I, n = 1 Preparation, nB NMR and Vibrational Spectra of Pure Isomeric Halohydrododecaborates X"B12H 12_"2-; X = Cl, n = 1 -3 ; X = Br, n = 1,2; X = I, n = 1 Pure isomers of X"B12H 12_"2_; X = Cl, Br, I are isolated by ion exchange chromatography on diethylaminoethyl cellulose. The structures are determined by " B and " B l'H jN M R spectro­ scopy. With X = Cl, Br the signal of ipso-B atomes is shifted to lower, with X = I to higher field compared with B 12H 122~. The resonances of B-atoms influenced by the antipodal effect are ob­ served at high field, increasing within the series I< B r< C l. The chemical shifts are explained by the anisotropy effect and by the paramagnetic term due to different —I and +M effects of the halogens. In agreement with theoretical predictions the substitution of B 12H 122~ with chlorine proceeds successively at vicinal positions B (l) —B(2) —B(3). The IR and Raman spectra of 1-XBi2H u2~ show in the region 175 — 380 cm -1 two characteristic bands shifting to lower frequen­ cies in the series Cl, Br, I and are therefore assigned to (B 12) -X stretching and (B 12) -X bending modes, respectively. 
  Reference    Z. Naturforsch. 39b, 189 (1984); eingegangen am 13. Oktober 1983 
  Published    1984 
  Keywords    Isomeric Halohydrododecaborates, UB and "B{'H }NM R Spectra, IR Spectra, Raman Spectra 
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 TEI-XML for    default:Reihe_B/39/ZNB-1984-39b-0189.pdf 
 Identifier    ZNB-1984-39b-0189 
 Volume    39 
144Author    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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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0745.pdf 
 Identifier    ZNB-1985-40b-0745 
 Volume    40 
145Author    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 
146Author    W. Preetz, G. PetersRequires cookie*
 Title    Darstellung und Charakterisierung der Tetrabutylammoniumsalze von [TC2C18] 2 ", [TC2C18] 3 -und [Te2Br8] 2 - Preparation and Characterization of the Tetrabutylammonium Salts of [TcaClg] 2 -, [Tc2Cl8] 3 -and [Tc2Br8] 2  
 Abstract    The reduction of [TcCL] 2-with Zn in conc. HCl after evaporation and extraction of ZnCl2 by diethylether yields a red-brown product from which after dissolving in dilute HCl by a solution of (TBA)Cl in CH2C12 (TBA)2[Tc2Cl8] and (TBA)3[Tc2Cl8] can be extracted. The separation is achieved by the much better solubility of the green (TBA)2[Tc2Cl8] in acetone compared with that of the grey-blue (TBA)3[Tc2Cl8]. On treatment of (TBA)2[Tc2Cl8] dissolved in acetone with bromine-free conc. HBr carmine red (TBA)2[Tc2Br8] is obtained for the first time. The vibrational spectra are similar and can be assigned according to the assumed D4H-symmetry. In the Raman spectra of both octachloroditechnetates the intensive Tc-Tc-vibration (Aig) is observed at 307 cm -1 , for (TBA)2[Tc2Br8] it is found at 323 cm-1 . The electronic spectrum of (TBA)2[Tc2Cl8] agrees to a high extent with that of the corresponding Re compound. 
  Reference    Z. Naturforsch. 35b, 797—801 (1980); eingegangen am 17. März 1980 
  Published    1980 
  Keywords    Octachloroditechnetate(III), Octachloroditechnetate(II, III), Octabromoditechnetate(III), Raman Spectra, IR Spectra, UVS Spectra 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-0797.pdf 
 Identifier    ZNB-1980-35b-0797 
 Volume    35 
147Author    ThF. Zafiropoulos, S. P. Perlepes, P. V. Ioannou, J. M. Tsangaris, A. G. GalinosRequires cookie*
 Title    Non Deprotonated Metal Complexes of the Bis-amide Tetradentate Ligand N,N' -(Dipicolyl) -1,8-naphthylenediamine  
 Abstract    Complexes of the general formula M(LH2)Cl2 • 2 H2O, where LH2 = N,N'-(dipicolyl)-1,8-naphthylenediamine and M = Mn, Ni and Cu, have been prepared. None of the metal ions used promote amide deprotonation on coordination: LH2 acts as a tetradentate ligand. Distorted octahedral stereochemistries for the complexes in the solid state have been proposed utilising microanalyses, magnetic susceptibilities, molar conductance measure-ments and IR and visible spectral data. The Ni(II) complex exhibits evidence of a poly-meric structure. 
  Reference    (Z. Naturforsch. 36b, 87 [1981]; received July 14 1980) 
  Published    1981 
  Keywords    N, N'-(Dipicolyl)-l, 8-naphthylenediamine, Bis-amide Tetradentate Ligand, Secondary Acid Amide Groups, Non-Deprotonated Complexes, IR Spectra 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0087.pdf 
 Identifier    ZNB-1981-36b-0087 
 Volume    36 
148Author    Jörn Müller, Barbara PassonRequires cookie*
 Title    7r-01efin-Iridium-Komplexe, XI [1] Das Bis(?; 4 -2.3-dimethylbutadien-1.3)- iridium-Kation und sein Dimethy lsulfoxid -Addukt rr-01efin Iridium Complexes, XI [1] The Bis(?/ 4 -2.3-dimethylbutadiene-l,3)iridium Cation and its Dimethylsulfoxide Adduct  
  Reference    Z. Naturforsch. 37b, 1358—1359 (1982); eingegangen am 14. Juli 1982 
  Published    1982 
  Keywords    Bis(?; 4 -2, 3-dimethylbutadiene)iridium Tetra-fluoroborate, Reaction with Dimethylsulfoxide, m NMR Spectra, IR Spectra 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-1358_n.pdf 
 Identifier    ZNB-1982-37b-1358_n 
 Volume    37 
149Author    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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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0247.pdf 
 Identifier    ZNB-1985-40b-0247 
 Volume    40 
150Author    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