| 3 | Author
| F. Hulliger, T. Siegrist | Requires cookie* | | Title
| The Crystal Structures of BaSe2 and BaSe3  | | | Abstract
| Crystal Structure, Polyselenides BaSe2 crystallizes with a monoclinic cell, a = 9.820(5), 6 = 4.929(3), c = 9.335(5) A, ß = 118.48(5)°; Z = 4, space group C 2/c. BaSe3 is tetragonal, a = 7.2802(5), c = 4.2495(4) A; Z — 2, space group P42im. Both polyselenides are isotypic with the corresponding poly sulfides. | | |
Reference
| (Z. Naturforsch. 36b, 14—15 [1981]; received September 9 1980) | | |
Published
| 1981 | | |
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| default:Reihe_B/36/ZNB-1981-36b-0014.pdf | | | Identifier
| ZNB-1981-36b-0014 | | | Volume
| 36 | |
4 | Author
| Gerd Becker, Gudrun Gresser, Werner Uhl | Requires cookie* | | Title
| Acyl-und Alkylidenphosphane, XV [1] 2.2-Dimethylpropylidinphosphan, eine stabile Verbindung mit einem Phosphoratom der Koordinationszahl  | | | Abstract
| In the presence of small amounts of solid sodium hydroxide, [2,2-dimethyl-l-(trimethyl-siloxy)propylidene]-trimethylsilylphosphine reacts at -f 20 °C to give hexamethyldisil-oxane and 2,2-dimethylpropylidynephosphine (2). In contrast to similar alkylidyne-phosphines this compound is stable at room temperature. The IR and mass spectrum are discussed, and iH, 13 C and 31 P NMR spectral data are given. | | |
Reference
| (Z. Naturforsch. 36b, 16—19 [1981]; eingegangen am 3. Oktober 1980) | | |
Published
| 1981 | | |
Keywords
| Alkylidynephosphines, 2, 2-Dimethylpropylidynephosphine, P-C Triple Bond | | |
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| default:Reihe_B/36/ZNB-1981-36b-0016.pdf | | | Identifier
| ZNB-1981-36b-0016 | | | Volume
| 36 | |
5 | Author
| Ahmet Keçeci, Dieter Rehder | Requires cookie* | | Title
| IR, 31 P-, 55 Mn-und 185 187 Re-NMR spektroskopische Untersuchungen an einigen Carbonylmangan-und -rhenium-Komplexen  | | | Abstract
| The IR and NMR spectra of the complexes [M(CO)e]Cl • HCl (M = Mn: 1, M = Re: 2), M(C0)5C02Et (M = Mn: 3, M = Re: 4), [Mn(CO)5PR3][PF6] (5; PR3 = PPh(OPh)2: a, P(n-Pr)3: b, PHPh2: c, PPh(NEt2)2: d, P(p-C6H4F)3: e), [Be(CO)5PHPh8][FF6] (6 c), Mn2(CO)s(PR3)2 (7) and Re2(CO)g(PHPh2)2 (8c) are discussed in the context of a-and ^-interactions in the metal-ligand system and compared with 51 V NMR data of the analogous isoelectronic and isostructural carbonylvanadates (—I). On the basis of these results, the phosphines are arranged in the order of decreasing integral ligand strength according to a>b>c>d. The 55 Mn shielding of 5 is greater than that of 1, which is explained by strong (x-interactions and correspondingly large e-ai* splitting dominating the paramagnetic deshielding term in the pseudooctahedral complexes of type 5. The only rhenium compound accessible to NMR is 2, for which the 185 Re and 187 Re resonances were obtained. 31 P coordination shifts are positive for all complexes. Spectroscopic data for 7c show that this complex presumably has the structure (CO)sMn-Mn(CO)3(PHPh2)2, contrasting 7 a, 7 b, 7d and 7e (local D4d symmetry). | | |
Reference
| (Z. Naturforsch. 36b, 20—26 [1981]; eingegangen am 6. Oktober 1980) | | |
Published
| 1981 | | |
Keywords
| Carbonylphosphinemanganese, Car bony lphosphinerhenium, IR Spectra, Manganese NMR Spectra, Rhenium NMR Spectra | | |
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| default:Reihe_B/36/ZNB-1981-36b-0020.pdf | | | Identifier
| ZNB-1981-36b-0020 | | | Volume
| 36 | |
7 | Author
| Heinrich Nöth, Robert Rurländer, Peter Wolfgardt | Requires cookie* | | Title
| Solutions of Lithium Tetrahydrido Aluminates in Ethers: a 'Li and 27 AI NMR Study  | | | Abstract
| Solutions of LiAlH4 in tetrahydrofuran (THF), glycoldimethylether (monoglyme), diglycoldimethylether (diglyme) and triglycoldimethylether (triglyme) as well as solutions of LiAlH4/THF in toluene have been investigated by 7 Li and 27 A1 NMR. It was found that <5 27 A1 is nearly independent of the solvent as is 1 J(A1H). However, the line width of the 27 A1 NMR signal shows strong solvent influences and, in addition, concentration and temperature dependence. Intermolecular hydride exchange becomes rapid in solutions of monoglyme and triglyme at room temperature. This can also be shown by the H/D exchange between LiAlH4 and L1AID4. <5 7 Li data indicate that Li is hexacoordinated in the series of glycoldimethylethers, and LiAlH4 in diglyme seems to be the system in which the AIH4 moiety is least affected by ion pair or triple ion formation. | | |
Reference
| (Z. Naturforsch. 36b, 31—41 [1981]; received July 28 1980) | | |
Published
| 1981 | | |
Keywords
| Lithium Tetrahydroaluminates, Lithium Tetradeuterioaluminates, 7 Li NMR Spectra, 27 A1 NMR Spectra | | |
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| default:Reihe_B/36/ZNB-1981-36b-0031.pdf | | | Identifier
| ZNB-1981-36b-0031 | | | Volume
| 36 | |
10 | Author
| Peter Dehnert, Joseph Grobe, Due Le Van | Requires cookie* | | Title
| Perfluormethyl-Element-Liganden, XXTV [I]* Organozinnverbindungen als Reagenzien, DI [2] Spaltungsreaktionen der Element-Element-Bindung in Verbindungen des Typs RnE-ERTO (R = CH3, CF3-E =P, AS, Se, Te * n,m = l, 2)  | | | Abstract
| A systematic study of the cleavage of element-element bonds in compounds of the type R"E-ERm (R = CH3, CF3; E = P, As, S, Se, Te; n,m = 1, 2) by the group IV A element hydrides Me3M'H (M' = Si, Ge, Sn; Me — CH3) has been carried out. To evaluate the reaction pathway, for a number of compounds the attack of H2O, CH3OH, HBr and HI has been investigated. Possible reaction intermediates have been synthesized by in-dependent routes and tested under comparable conditions. | | |
Reference
| (Z. Naturforsch. 36b, 48—54 [1981]; eingegangen am 14. August 1980) | | |
Published
| 1981 | | |
Keywords
| Organoelement-Element Compounds, Perfluoromethyl Derivatives, NMR Spectra | | |
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| default:Reihe_B/36/ZNB-1981-36b-0048.pdf | | | Identifier
| ZNB-1981-36b-0048 | | | Volume
| 36 | |
11 | Author
| Gertrud Kiel | Requires cookie* | | Title
| Preparation and Crystal Structure of SbCl3 * I2 * 1,4-Dithiane  | | | Abstract
| The darkred compound SbCl3 • I2 • S2C4H8 has been prepared and its crystal structure determined. This new compound crystallizes in the monoclinic system, space group P2i, with a = 849.2 pm, b = 904.2 pm, c = 923.6 pm and ß = 106.1° at a temperature of 113 K, and with a = 858.8(2) pm, b = 914.7(3) pm, c = 934.0(4) pm and ß = 106.62(3)° at a tem-perature of 293 K, respectively. The structure is buüt up from chains (SC2H4S-I-I-ClSbCl2) oo with a y-trigonal bipyramid around Sb. | | |
Reference
| (Z. Naturforsch. 36b, 55—58 [1981]; eingegangen am 19. August/22. Oktober 1980) | | |
Published
| 1981 | | |
Keywords
| Iodine Antimony Trichloride 1, 4-Dithiane, Crystal Structure | | |
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| default:Reihe_B/36/ZNB-1981-36b-0055.pdf | | | Identifier
| ZNB-1981-36b-0055 | | | Volume
| 36 | |
12 | Author
| A. N. Garg, P. N. Shukla | Requires cookie* | | Title
| Mössbauer Spectroscopic Studies of Monosubstituted Pentacyano Ferrate(II) Complexes, Na3 [Fe(CN)5RNH2] * nH20  | | | Abstract
| A series of compounds Na3[Fe(CN)5RNH2] * nH20 where R = -H, -CH3, -C2H5, n-C3H7, n-C4H9 and -CH2C6H5 and RNH2 = C5H5N have been studied by Mössbauer spectroscopy. Quadrupole splitting (A EQ) values vary in a limited range (0.68-0.80 mm/sec) indicating only small distortions in the octahedral geometry of the compounds with the substitution of various amino groups. Isomer shift (6) values remain almost constant suggesting that s-electron density is not affected by substitution. | | |
Reference
| (Z. Naturforsch. 36b, 59—61 [1981]; received September 19 1980) | | |
Published
| 1981 | | |
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| default:Reihe_B/36/ZNB-1981-36b-0059.pdf | | | Identifier
| ZNB-1981-36b-0059 | | | Volume
| 36 | |
13 | Author
| W. Preetz, H. Schulz | Requires cookie* | | Title
| Darstellung und spektroskopische Charakterisierung von Tetrakis (chlor o -iodo ) oxalato -osmaten (IV )  | | | Abstract
| On treatment of [OsLjox] 2-with Cl~ the mixed complexes [OsClnI4_nox] 2 -, n = 1, 2, 3, are formed. The isolation and complete separation of the differently coloured geometric isomers is achieved by ion exchange chromatography on diethylaminoethyl cellulose. The IR and Ra spectra are assigned according to point groups Czv, Cs, Ci. The mutual influence of ligands, especially by the high trans effect of I, is indicated by shifts of the distinct vibrational and electronic bands. The observed splittings of I -> Os transitions are attributed to the different groupings I-Os-I, I-Os-Cl, and I-Os-O, important for the distinction of stereoisomers. The CT-bands as well as the d-d-transitions show batho-chromic shifts with increasing number of I-ligands. Up to five spin-orbit components in the NIR region are well resolved. The assignment is improved by the electronic Ra spectra. The fine structure of some d-d-bands originates from coupling with symmetric vibrational modes. | | |
Reference
| (Z. Naturforsch. 36b, 62—69 [1981]; eingegangen am 10. Oktober 1980) | | |
Published
| 1981 | | |
Keywords
| Tetrakis(chloro-iodo)oxalato-osmates(IV), UV-VIS-NIR Spectra, IR Spectra, Raman Spectra | | |
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| default:Reihe_B/36/ZNB-1981-36b-0062.pdf | | | Identifier
| ZNB-1981-36b-0062 | | | Volume
| 36 | |
16 | Author
| Reinhard Hemmer, HansAlbert Brune, Ulf Thewalt | Requires cookie* | | Title
| Kristall-und Molekülstruktur des (Tetramethylcyclobutadien)cis-1.2-dicyano-ethen-1.2-dithiolato-nickel(II) Crystal and Molecular Structure of (Tetramethylcyclobutadiene)ciS-l,2-dicyano-ethene-l,2-dithiolato-nickel(II)  | | | Abstract
| Nickel(II) Complex, (Tetramethylcyclobutadiene)cw-l,2-dicyano-ethene-l,2-dithiolato-nickel(II), Molecular Structure Single crystals of the title compound, A, have been prepared and studied structurally by X-ray analysis. A crvstallizes in the space group P 2i/n with Z = 4 and lattice parameters a = 11.174(3), b= 15.627(5), c= 8.148(3) A and ß = 92.82(3)°. Within the limits of error the -bonded cyclobutadiene ring is a square with an average C-C-bond distance of 1.465 A; the methyl groups are displaced away from the nickel atom, the average distance between the ring plane and the methyl C-atoms being 0.15 A. The sulfur containing five membered ring has a cyclic delocalized electron distribution. | | |
Reference
| (Z. Naturforsch. 36b, 78—82 [1981]; eingegangen am 17. September 1980) | | |
Published
| 1981 | | |
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| default:Reihe_B/36/ZNB-1981-36b-0078.pdf | | | Identifier
| ZNB-1981-36b-0078 | | | Volume
| 36 | |
17 | Author
| D. Layek, G. C. Papavassiliou | Requires cookie* | | Title
| Some New 1-D Compounds with Metal-Halide Chain  | | | Abstract
| Some new mixed valence compounds of the type [M(L-L)2M(L-L)2X2]Y4 (where M = Pt or Pd, L-L = 2NH3 or ethylenediamine, X = Cl, Br or I and Y = HS04, 1/2 S04, C104 or 1/2 PtCU) have been synthesized. The polarized Raman spectra of single crystals show the anisotropic character and the presence of ---M(H)---X-M(IV)-X chains. The method of preparation and the chemical behaviour correspond to the mechanism of the formation of Magnus green salt oxidized product. | | |
Reference
| (Z. Naturforsch. 36b, 83—86 [1981]; received July 28 1980) | | |
Published
| 1981 | | |
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| default:Reihe_B/36/ZNB-1981-36b-0083.pdf | | | Identifier
| ZNB-1981-36b-0083 | | | Volume
| 36 | |
18 | Author
| ThF. Zafiropoulos, S. P. Perlepes, P. V. Ioannou, J. M. Tsangaris, A. G. Galinos | Requires 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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| default:Reihe_B/36/ZNB-1981-36b-0087.pdf | | | Identifier
| ZNB-1981-36b-0087 | | | Volume
| 36 | |
19 | Author
| Helmut Burdorf, Christoph Eischenbroich | Requires cookie* | | Title
| Metall-rr-Komplexe yon Benzolderivaten, XIII [1] Bis(methylthio-/-beiizol)chrom(0) Darstellung und Einsatz als zweizähniger Chelatligand  | | | Abstract
| The thioanisole-7r-complexes (methylthio-^-benzene)-(^-benzene)-chromium (2) and bis(methylthio-r/-benzene)chromium (3) have been prepared via lithiation of bis(rj-benzene)-chromium and consecutive reaction with dimethyldisulfide. *H NMR and 13 C NMR spectra of 2 and 3 as well as ESR-spectra of the corresponding radical cations 2t and 3t were recorded and analyzed. In contrast to C(»?.arene)-Si and C(r/-arene)-P bonds, C(1/.arene)-S bonds are stable to solvolysis. With (norbornadiene)tetracarbonylmolybdenum, 3 readily forms [bis(methylthio-?j-benzene)chromium]tetracarbonylmolybdenum (6) wherein 3 functions as a chelating ligand. *H and 13 C NMR evidence suggests, that at room temperature 6 undergoes rapid conformational interconversions. | | |
Reference
| (Z. Naturforsch. 36b, 94—101 [1981]; eingegangen am 9. September 1980) | | |
Published
| 1981 | | |
Keywords
| Thioanisole Sandwich Complexes, X H NMR Spectra, 13 C NMR Spectra, ESR Spectra, Coordination Chemistry | | |
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| default:Reihe_B/36/ZNB-1981-36b-0094.pdf | | | Identifier
| ZNB-1981-36b-0094 | | | Volume
| 36 | |
20 | Author
| K. K. Chacko, W. Saenger | Requires cookie* | | Title
| The Crystal and Molecular Structure of 2-{8-(2-Aminophenoxy)-3,6-dioxaoctyloxy}benzoic Acid * NaC104, a Linear Polyether with Terminal Amino and Carboxyl Functions' 4  | | | Abstract
| Polyether, Zwitterion, X-ray, 2-{8-(2-Amino phenoxy)-3,6-dioxaoctyloxy}benzoic acid • NaC104 The title compound, C19H23NO6 • NaC104, crystallizes in the monoclinic space group P2i/c with cell dimensions a = 16.374(5), 6 = 9.856(4), c = 27.245(8) A, 0 = 91.88(5)° and Z = 8. The structure of this polyether complex was solved on the basis of 4501 diffracto-meter measured reflections and refined to an Rw of 0.091. There are two molecules per asymmetric unit which are related to each other by an approximate non-crystallographic centre of symmetry. Both complex molecules exist in the favourable zwitterion configura-tion with ion pair attraction between the amino (NH3+) and carboxyl(COO _) end groups of the polyether ligand. The Na+ion is circulary coordinated to all except the oxygen atoms of the aminophenoxy end group of the polyether ligand suggesting that this oxygen has reduced electronegativity. All C-C and C-0 bonds of the ligand exist in favourable gauche and trans conformations. | | |
Reference
| (Z. Naturforsch. 36b, 102—107 [1981]; received October 20 1980) | | |
Published
| 1981 | | |
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| default:Reihe_B/36/ZNB-1981-36b-0102.pdf | | | Identifier
| ZNB-1981-36b-0102 | | | Volume
| 36 | |
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