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2001[X]
141Author    M. =. Li, Rb, Cs, L. Rycerz, M. Gaune-Escard3Requires cookie*
 Title    Mixing Enthalpies of TbBr3-MBr Liquid Mixtures  
 Abstract    The molar enthalpies o f mixing, A mixHm in the binary liquid systems TbBr3-M Br (M = Li, Na, 
  Reference    Z. Naturforsch. 56a, 859—864 (2001); received N ovem ber 14 2001 
  Published    2001 
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 TEI-XML for    default:Reihe_A/56/ZNA-2001-56a-0859.pdf 
 Identifier    ZNA-2001-56a-0859 
 Volume    56 
142Author    JitkaE. Ysseltová, M.Iroslav Ebert, V. Ladim Ír ZbranekRequires cookie*
 Title    The Influence of the Degree of Organization of Saturated Solutions on the Shape of the Solubility Isotherm  
  Reference    Z. Naturforsch. 56a, 865 (2001) 
  Published    2001 
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 TEI-XML for    default:Reihe_A/56/ZNA-2001-56a-0865.pdf 
 Identifier    ZNA-2001-56a-0865 
 Volume    56 
143Author    B. Baranowski, A. LundénRequires cookie*
 Title    An Explanation of the Removal of Metastability in Some Hydroacid Salts by Water Adsorption  
 Abstract    The metastability of some phases of C sH S04 and RbH2P 0 4 is due to the volume decrease at an endothermic phase transition which "locks in" the metastability in question. Water adsorption, which removes these metastabilities, probably exerts a "wedge-like" force which expands the lattice spacing in the surface layer, thus facilitating the start of the phase transition. The induction time and the zeroth order kinetics of the transition in RbH2P 0 4 are exponential functions of the water activity applied. 
  Reference    Z. Naturforsch. 56a, 869—872 (2001); received October 31 2001 
  Published    2001 
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 TEI-XML for    default:Reihe_A/56/ZNA-2001-56a-0869.pdf 
 Identifier    ZNA-2001-56a-0869 
 Volume    56 
144Author    Prasad Durga, Devesh Ojha, V.G K M Kumar, PisipatiRequires cookie*
 Title    Smectogenic Behaviour of 70.6 at it's Phase Transition Temperature: A Computational Analysis Reprint request to  
 Abstract    A computational analysis has been carried out to determine the configurational preference of a pair of Ar-(4-n-heptyloxybenzylidine)-4-hexylaniline (70.6) molecules with respect to translatory and orien­ tational motions. The CNDO/2 method has been employed to evaluate the net atomic charge and atom­ ic dipole components at each atomic centre of the molecule. The configurational energy has been com­ puted using the modified Rayleigh-Schrödinger perturbation method. The obtained energies were used to calculate the probability of each configuration at phase transition temperature, using Maxwell-Boltz-mann's formula. The flexibility of various configurations has been studied in terms o f variations of the probability due to small departures from the most probable configuration. The results are discussed in the light of experimental as well as other theoretical observations. The smectogenic character of the molecule has been correlated with the parameters introduced in this paper. 
  Reference    Z. Naturforsch. 56a, 873—878 (2001); received October 12 2001 
  Published    2001 
  Keywords    706, CNDO/2 Method, Quantum Chemistry, Computer Simulation 
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 TEI-XML for    default:Reihe_A/56/ZNA-2001-56a-0873.pdf 
 Identifier    ZNA-2001-56a-0873 
 Volume    56 
145Author    Goong Chen, Zijian DiaoRequires cookie*
 Title    Quantum Multi-object Search Algorithm with the Availability of Partial Information  
 Abstract    Consider the unstructured search of an unknown number I of items in a large unsorted database of size N. The multi-object quantum search algorithm consists of two parts. The first part of the algorithm is to generalize Grover's single-object search algorithm to the multiobject case, and the second part is to solve a counting problem to determine /. In this paper we study the multi-object quantum search algorithm (in continuous time), but in a more structured way by taking into account the availability of partial informa­ tion. The modeling of available partial information is done simply by the combination o f several pre­ scribed, possibly overlapping, information sets with varying weights to signify the reliability of each set. The associated statistics is estimated and the algorithm efficiency and complexity are analyzed. Our analysis shows that the search described here may not be more efficient than the unstructured (generalized) multi-object Grover search if there is "misplaced confidence". However, if the informa­ tion sets have a "basic confidence" property in the sense that each information set contains at least one search item, then a quadratic speedup holds on a much smaller data space, which further expedites the quantum search for the first item. 
  Reference    Z. Naturforsch. 56a, 879—888 (2001); received September 18 2001 
  Published    2001 
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 TEI-XML for    default:Reihe_A/56/ZNA-2001-56a-0879.pdf 
 Identifier    ZNA-2001-56a-0879 
 Volume    56 
146Author    F. W. InterbergRequires cookie*
 Title    Gamma-Ray Bursters and Lorentzian Relativity  
 Abstract    In the dynamic interpretation of relatively by Lorentz and Poincare, Lorentz invariance results from real physical contractions of measuring rods and slower going clocks in absolute motion against an ether. As it was shown by Thirring, this different interpretation of special relativity can be extended to gener­ al relativity, replacing the non-Euclidean with a Euclidean geometry, but where rods are contracted and clocks slowed down. In this dynamic interpretation of the special, (and by implication of the general) theory of relativity, there is a balance of forces which might be destroyed near the Planck energy, reached in approaching the event horizon. In gravitational collapse, the event horizon appears first at the center of the collapsing body, thereafter moving radially outward. If the balance of forces holding together ele­ mentary particles is destroyed near the event horizon, all matter would be converted into zero rest mass particles which could explain the large energy release of gamma ray bursters. 
  Reference    Z. Naturforsch. 56a, 889—892 (2001); received August 29 2001 
  Published    2001 
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 TEI-XML for    default:Reihe_A/56/ZNA-2001-56a-0889.pdf 
 Identifier    ZNA-2001-56a-0889 
 Volume    56 
147Author    A. K. Urbatov, P. Janik, A. D. Ro, Zd-R Zo Sk, S.J R Zo Sk, M. Paluch, P. M. Alik, J. Z. Io Ło, J. JaRequires cookie*
 Title    Universal Scaling of Alpha Relaxation in Complex Liquids  
 Abstract    A plot is given, showing the result of a scaling analysis of dielectric loss curves containing, apart from low molecular glass former data (glycerol, dibutyl phtalate), also loss curves of the following liquid crystalline materials, mostly in the iso­ tropic phase: 4-(2-methylbutyl)-4'cyanobiphenyl (5*CB, supercooled isotropic phase), 4-cyano-4-n-alkyl biphenyls (nematogens 5CB and 8CB, isotropic phase), 4-(4-cyano-4-butylcyclohexyl)-4'-octylbiphenyl (laterally substituted nema-togen, isotropic phase), and 4-n-alkyl-4'-isothiocyanatobiphe-nyl (5 and 10 BT, isotropic and SmE phases). The plot applies the scaling formula originally proposed for glassforming, super­ cooled liquids [Dendzik et al.7]. The result supports the recent suggestion that dielectric relaxation in the isotropic phase of nematogens may show some features typical for "glassy" mate­ rials. 
  Reference    Z. Naturforsch. 56a, 893—894 (2001); received September 21 2001 
  Published    2001 
  Keywords    Complex Liquids Supercooled Liquids, Liquid Crystals, Dielectric Loss Curves, Universality 
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 TEI-XML for    default:Reihe_A/56/ZNA-2001-56a-0893_n.pdf 
 Identifier    ZNA-2001-56a-0893_n 
 Volume    56 
148Author    Dirk Niepmann3, Rainer Pöttgen3, KristinM. Poduskab, FrancisJ. Disalvob, Henning Trillc, BerndD. MoselcRequires cookie*
 Title    Structure and Properties of the Stannides CeAuSn, Ce3Rh4Sn13, and Ce3Ir4Sn13  
 Abstract    Intermetallic Compounds, Cerium, M össbauer Spectra CeAuSn, Ce.^RluSnn, and Ce3lr4Sni3 were prepared by reaction of the elements in an arc-melting furnace and subsequent annealing at 970 K for two weeks. The three stannides were investigated by X-ray powder and single crystal techniques. CeAuSn crystallizes with the NdPtSb type, space group P6?,mc: a = 472.7(2), c = 771.6(3) pm, xvR2 = 0.0230,208 F 2 values, 11 variable parameters, and BASF = 0.40(2). The gold and tin atoms form a pronounced two-dimensional [AuSn] polyanion which consists of slightly puckered Au3Sn3 hexagons. ,19Sn Mössbauer data at 78 K show one signal at an isomer shift of 6 = 1.90(7) mm/s subjected to unresolved quadrupole splitting of zAEq = 0.55(2) mm/s. Ce3Rh4Sni3 and Ce3lr4Sni3 adopt the cubic Yb3Rh4Sni3 type structure, space group Pm3n: a = 970.51(3) pm, wR2 = 0.0721, 267 F 2 values (Ce3Rh4Sni3) and a = 972.29(6) pm, wR2 = 0.0850, 267 F 2 values (Ce3lr4Sni3) with 14 variable parameters for each refinement. Striking structural motifs in C eiR luSnis are condensed distorted trigonal [RhSnö] prisms with Rh-Sn distances of 266 pm. The polyhe­ dral network leaves two different cages which are occupied by cerium (6c position) and tin (2a position) atoms. The Sn2 atoms show occupancy parameters of only 92% (C esR luSnn) and 76% (Ce3lr4Sni3) and an extremely large displacement parameter indicating a rattling of these atoms within the icosahedral S n ^ cages. Magnetic susceptibility measurements of Ce3Rh4 Sni3 show paramagnetic behavior down to 2 K with an experimental magnetic moment of 2.45(2) /iß/Ce. No magnetic ordering is observed. Magnetization measurements show a moment of 0.78(2) ^ß/C e at 2 K and 5.5 T. Resistivity data reveal only a very weak tem­ perature dependence. The two crystallographically different tin sites are resolved in the ll9Sn Mössbauer spectrum which shows a signal at S = 2.12(1) mm/s subject to quadrupole splitting of 1.54(1) mm/s, superimposed by a singlet at 6 = 2.47(1) mm/s. The Seebeck coefficient of Ce^RluSnn is within a few ß V /K of zero over the temperature range of 10 -300 K. 
  Reference    (Z. Naturforsch. 56b, 1—8 [2001]; received November 3 2000) 
  Published    2001 
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 TEI-XML for    default:Reihe_B/56/ZNB-2001-56b-0001.pdf 
 Identifier    ZNB-2001-56b-0001 
 Volume    56 
149Author    Ekkehard FluckbRequires cookie*
 Title    Darstellung und spektroskopische Charakterisierung von Natriumpentacyano(phosphan/phosphit)ferraten(III) Preparation and Spectroscopic Characterization of Sodium Pentacyano(phosphane/phosphite)ferrates(III) Hidenari Inoue3, Satomi Osone3  
 Abstract    Sodium pentacyanoferrates(III) of the type Na2[Fe(CN)5L] (L = phosphane or phosphite) have been prepared from sodium pentacyanoferrates(II), Na3[Fe(CN)5L], by bromine oxidation and characterized by Mössbauer, IR, and electronic spectroscopy. Isomer shifts and quadrupole splittings lie within the range commonly found in low-spin iron(III) complexes. A linear correlation was found between isomer shifts and CN stretching and Fe-CN bending frequencies, respectively. The spectroscopic parameters show that the d^-d^ back bonding o f the Fe-P bonds is synergetically strengthened with increasing a donor capability of the phosphorus ligands. 
  Reference    (Z. Naturforsch. 56b, 9 [2001]; eingegangen am 28. September 2000) 
  Published    2001 
  Keywords    Pentacyanoferrates(III), M össbauer Spectra, Phosphorus Ligands 
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 TEI-XML for    default:Reihe_B/56/ZNB-2001-56b-0009.pdf 
 Identifier    ZNB-2001-56b-0009 
 Volume    56 
150Author    Hans Bock, Sven Holl, Volker KrenzelRequires cookie*
 Title    4N-CH3 und HCI3: Strukturbestimmung nach Kristallzüchtung oder durch Dichtefunktionaltheorie-Berechnung4N-CH3 and HCI3: Structure Determination Following Crystallization or by Density Functional Theory Calculation Ausgangspunkt: Strukturverzerrungen in Polyiod-Molekülen durch repulsive van der Waals-Wechselwirkungen I***I  
 Abstract    The structures of tri-and tetraiodo-substituted carbon compounds are determined either expe­ rimentally by X-Ray Structure Analysis or, because crystallization of tetraiodothiophene could not be achieved, approximated by Density Functional Theory optimization of structural data from a donor/acceptor complex. The structures show noteworthy details such as a second po­ lymorph of tetraiodoethene crystallized by sublimation or herringbone crystal packing patterns o f tetraiodopyrrole derivatives. All molecular geometries are discussed and compared based on relativistic density functional theory calculations with 6 -3 1G* basis sets including iodine pseudopotentials. They reproduce even finer structural details due to van der Waals repulsion of the bulky iodo substituents. Natural Bond Orbital (NBO) charge distributions suggest positive partial charges at all iodine centers with the strongest polarization C 5^ — +I60 in HCI3, which contains well over 97% iodine. 
  Reference    (Z. Naturforsch. 56b, 13—24 [2001]; eingegangen am 9. August 2000) 
  Published    2001 
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 TEI-XML for    default:Reihe_B/56/ZNB-2001-56b-0013.pdf 
 Identifier    ZNB-2001-56b-0013 
 Volume    56 
151Author    Gabriele Wagner3, Rudolf Herrmann3, Bj0m Pedersenb, Wolfgang Schererb, PaulJ. ScheuerRequires cookie*
 Title    Synthesis and Structure of Chiral Silatranes Derived from Terpenes  
 Abstract    Starting with the chiral pool compounds (—)-menthone, (—)-limonene, (—)-/3-pinene, and (—)-carvone, new homochiral triethanolamine derivatives were obtained and converted to chi­ ral silatranes. These silatranes were characterized by crystal structure analyses and NMR techniques. Conformational analyses in the solid terpene residues determine the direction of the ring 
  Reference    (Z. Naturforsch. 56b, 25—38 [2001]; received August 8 2000) 
  Published    2001 
  Keywords    Silatranes, Terpenes, Chiral Pool 
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 TEI-XML for    default:Reihe_B/56/ZNB-2001-56b-0025.pdf 
 Identifier    ZNB-2001-56b-0025 
 Volume    56 
152Author    RolfM. Inkwitz, Michael BerkeiRequires cookie*
 Title    Kristallstruktur von Tetraphenylphosphonium Dichloroiodat(I) [PPh4][ICl2] Crystal Structure of Tetraphenylphosphonium Dichloroiodate(I) [PPh4][ICl2]  
 Abstract    Dichloroiodate Tetraphenylphosphonium dichloroiodate(I) [PPh4] [IC12] crystallises in the monoclinic system in the space group P2/n with a = 1025.7(1), b = 770.2(1), c = 1446.4(1) pm, ß = 90.11(1)° and two formula units per unit cell. The IC12_ anion is symmetrical (C2v) and almost linear with I-Cl bond lengths of 257.1(2) pm and a bond angle of 178.10(6)°. 
  Reference    (Z. Naturforsch. 56b, 39—42 [2001]; eingegangen am 28. September 2000) 
  Published    2001 
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 TEI-XML for    default:Reihe_B/56/ZNB-2001-56b-0039.pdf 
 Identifier    ZNB-2001-56b-0039 
 Volume    56 
153Author    E. Kavlakoglu3, A. Eimali3, Y. Elerman3, R. Werner6, H. Svobodac, FuesscRequires cookie*
 Title    Crystal Structure and Magnetic Properties of a Linear Trinuclear Ni(II) Complex  
 Abstract    Linear Trinuclear Nickel(II) Complex, Super-Exchange Interactions, Antiferromagnetic Coupling [Ni3(C2H 3 0 2)2(CH3 0 H)2L2] [L = l,3-bis(5-chlorosalicylideneamino)propan-2-ol dianion, (C2H3 0 2)_ = acetate, (CH3OH) = methanol] was synthesized and its crystal structure was determined. It crystallizes in the monoclinic spaceeroup P2i /n with a = 12.694(2), b = 13.281 (4), c = 15.420(3) Ä, ß = 111.25(2)°, V = 2422.9(9) A ? ,Z = 2 . The molecule is a "linear" trinuclear complex with nearly octahedral coordination of each nickel ion. Adjacent nickel(II) ions are bridged by the phenolic oxygen atoms of the ligands and the oxygen atoms of the acetato ligands. The coordination sphere of the terminal nickel(II) ions is completed by the oxygen atom of the methanol. Adjacent nickel(II) centers are separated by 3.043(1) A and weakly antiferromagnetically coupled (J\ = -3 .4 cm -1). The terminal nickel(II) centers are separated by 6.086(1) A and very weakly antiferromagnetically coupled (J2 = -0 .3 cm -1) which follows from temperature-dependent magnetic susceptibility measurements in the temperature range 4.5 to 318 K. The magnetic moment rises from 2.99 hb at 4.5 K to 5.42 /iß at 318 K. In the X(T) curve no characteristic maximum was observed. 
  Reference    (Z. Naturforsch. 56b, 43—48 [2001]; received July 4 2000) 
  Published    2001 
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 TEI-XML for    default:Reihe_B/56/ZNB-2001-56b-0043.pdf 
 Identifier    ZNB-2001-56b-0043 
 Volume    56 
154Author    JenniferA. Aitken, MercouriG. KanatzidisRequires cookie*
 Title    New Information on the Na-Ti-Se Ternary System  
 Abstract    Molten Salt Fluxes, Polychalcogenide, Polyselenide Na2Ti2Se9 was first discovered in the quaternary system Na/Ti/P/Se, but it can be prepared rationally by dissolving Ti in a Na2Se.v flux at 375 °C. The silverish dark red crystals are air-and water-stable. A new method for synthesizing Na4TiSe4 is also reported. Na2Ti2Seg crystallizes in space group P2, with a = 12.785(4), b = 14.848(4), c = 13.961(4) A, ß = 94.556(4)°, R 1 = 0.0592 and wR2 = 0.1336. The structure is similar to that of KsNaTi6Se27. It contains infinite one dimensional chains which run parallel to the c-axis and contain Ti + centers bonded to Se22~ and Se2-species. The l/oo[Ti2(Se2)4Se]2~ chains pack together in a hexagonal pattern. All of the titanium atoms are surrounded by a pentagonal bipyramid of selenium atoms. The selenium atoms bridge the Ti centers in two different ways. Na2Ti2Seg is a semiconductor with a band gap, Eg, of ~ 1.02 eV. The Raman spectra are also reported. 
  Reference    (Z. Naturforsch. 56b, 49—56 [2001]; received August 22 2000) 
  Published    2001 
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 TEI-XML for    default:Reihe_B/56/ZNB-2001-56b-0049.pdf 
 Identifier    ZNB-2001-56b-0049 
 Volume    56 
155Author    G. C. Papavassiliou, G. A. Mousdis, I. B. KoutselasRequires cookie*
 Title    Some Organic-Inorganic Hybrid Compounds Based on «ö-Thiuronium Cations and Lead Halide Anions  
 Abstract    Using 1-chlorodecane (C10H21CI), benzyl chloride (C6H5CH2CI), a,a'-dichloro-p-xylene (CICH2C6H4CH2CI), 4-phenylbenzyl chloride (C6H5C6H4CH2CI), 2-bromomethyl-naphthal-ene (CioHyC^Br), 4-bromomethyl-7-methoxycoumarin (CioHzO^C^Br), 2-bromomethyl-anthraquinone (CuH TC ^C ^Br), 9-chloromethyl-anthracene (C14H9CH2CI), thiourea and halides as starting materials, the organic-inorganic hybrid compounds [CioH2iSC(NH2)2]2Pbl4, [C6H5CH2SC(NH2)2]4Pb3l,o, [(H sN h C S C ^ C ö H tC ^ S Q N H jh k sP b ls, [C6H5C6H4CH2S-C(NH2)2]PbI3, [C,oH7CH2SC(NH2)2]Pbl3, [CioH yChC^SQNHzhlPbL, [C^HyOjCHzSC-(NH2)2]PbI3, [C,4H9CH2SC(NH2)2]Pbl3, and [C M H gO ^SQ N H z^hPbB ^ were prepared and characterized analytically and spectroscopically. 
  Reference    (Z. Naturforsch. 56b, 57—61 [2001]; received September 11 2000) 
  Published    2001 
  Keywords    Organic-Inorganic Hybrids, Low-Dimensional Semiconductors, Fluorescence 
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 Identifier    ZNB-2001-56b-0057 
 Volume    56 
156Author    Requires cookie*
 Title    Metallkomplexe mit biologisch wichtigen Liganden, CXXXI*. Pentamethylcyclopentadienyl-Halbsandwich-Komplexe von Rhodium und Iridium mit Glycosyl-«-iminocarboxylaten als Chelat-Liganden  
  Reference    (Z. Naturforsch. 56b, 62 [2001]) 
  Published    2001 
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 Identifier    ZNB-2001-56b-0062 
 Volume    56 
157Author    Requires cookie*
 Title    Metallkomplexe mit biologisch wichtigen Liganden, CXXXII*. N,0-Chelatkomplexe von Palladium(II), Platin(II) und Iridium(III) mit dem Anion von Glucosaminsäure (2-Amino-2-deoxy-D-gluconsäure)  
  Reference    (Z. Naturforsch. 56b, 69 [2001]) 
  Published    2001 
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 TEI-XML for    default:Reihe_B/56/ZNB-2001-56b-0069.pdf 
 Identifier    ZNB-2001-56b-0069 
 Volume    56 
158Author    ProfW. Sonderdruckanforderungen, Siebert, Herrn, Prof, M. DrRequires cookie*
 Title    Synthese und Struktur von benzylsubstituierten Derivaten des Dinickel-Tripeldeckerkomplexes //-J75,i75-(2,3-Dihydro-l,3-diborolyl)  
 Abstract    -(i/3-aIlyI)(7/4-l,5-hexadien)dinickel Synthesis and S tructure o f B enzyl S ubstituted D erivatives of the D inickel T riple-D ecker C om plex ,w-?75,?75-(2 ,3 -D ih y d ro -l,3 -diborolyl)-(?73-allyl)(774-l ,5 -hexadiene)dinickel W alter Siebert, Stefan H uck und H an s Pritzkow Nickel, //-775,?75-(2 ,3-Dihydro-l,3-diborolyl)(?73-allyl)(?74-l,5-hexadiene)dinickel, Polydecker Complexes Hydroboration of phenyl-and mesitylethyne with in situ formed HBC12 leads to an isome­ ric mixture of l,l-bis(dichloroboryl)-2-phenylethane (4a) and l,l-bis(dichloroboryl)-l-pheny-lethane (4b) (ratio 3 : 1) and regioselectively to l,l-bis(dichloroboryl)-2-mesitylethane (4c). Treatment of 4a/b and 4c with BI3 gives the corresponding tetraiodo compounds 5, which undergo redox reactions with butyne-2 to form the l,3-diiodo-4,5-dimethyl-2,3-dihydro-l,3-diborole derivatives 6a/b and 6c. Reactions of the diiodo-l,3-diboroles with AlMe3 or LiMe result in the formation of the very air-sensitive pentaorganyl-l,3-diboroles la, lc and the hexaorganyl-l,3-diborole lb. The mixture of la/b as well as lc react with bis(?/3-allyl)nickel to give black products, which are chromatographed on silica with hexane as eluent. The brown solids were recrystallized from pentane to give the light-brown crystals of i M-j/5,7;5-[2-benzyl-l,3 ,4 ,5 -tetramethyl-2 ,3-dihydro-l,3-diborolyl](/73-allyl)(»74-l,5-hexadiene)dinickel (2a, 34%) and //-?/5,»75-[2-(2 ,4 ,6-trimethyl-benzyl)-l,3 ,4 ,5-tetramethyl-2,3-dihydro-l,3-diborolyl](?73-allyl)(?74-l,5-hexadiene)dinickel (2c, 43%). lb does not react with Ni(C3H5)2 to form any triple-decker. The compositions of the new compounds follow from spectroscopic and analytical data, and from X-ray structure analyses of 6a and of 2a. The structure of the ?74-l,5-hexadiene-?73-allyl-dinickel triple-decker 2a finally disproved the alternative tris(allyl)dinickel arrangement. 
  Reference    (Z. Naturforsch. 56b, 73—78 [2001]; eingegangen am 4. September 2000) 
  Published    2001 
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 TEI-XML for    default:Reihe_B/56/ZNB-2001-56b-0073.pdf 
 Identifier    ZNB-2001-56b-0073 
 Volume    56 
159Author    M. Ichael Schur, C. Hristian, N. Äther, W. Olfgang, B. EnschRequires cookie*
 Title    Synthesis and Crystal Structure of Mn2(C2H5NH2)2Sb2S5 Exhibiting a Reversible Phase Transition  
 Abstract    Thioantimonates, Solvothermal Synthesis, Chalcogenides The reaction of elemental manganese, antimony and sulfur with ethylamine under mild solvothermal conditions yielded a thioantimonate(III) with composition Mn2(EA)2Sb2S5 (EA = C2H5NH2) that is a new member of a series of polymeric manganese thioantimo-nates(III). The structure of the title compound consists of layers of a neutral mesh-like Mn2Sb2S5 framework. The ethylamino ligands coordinated to the Mn centres separate the sheets and fill the voids within the layers formed by the interconnection of Mn2Sb2S4 hetero-cubane like building blocks. Below 273 K a reversible phase transition occurs, which is accom­ panied by a doubling of the crystallographic a-axis. 
  Reference    (Z. Naturforsch. 56b, 79—84 [2001]; received September 14 2000) 
  Published    2001 
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 TEI-XML for    default:Reihe_B/56/ZNB-2001-56b-0079.pdf 
 Identifier    ZNB-2001-56b-0079 
 Volume    56 
160Author    Requires cookie*
 Title    Darstellung, n B-, 13C-NMR-und Schwingungsspektren  
 Abstract    von Cs2[B6Cl5(p-C6H4(NI-I2))] sowie Kristallstruktur von (Ph4P)2[B6Cl5(p-C6H4(NH2))]. 2CH3CN. 0,5 EtzO 
  Reference    (Z. Naturforsch. 56b, 85 [2001]) 
  Published    2001 
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 TEI-XML for    default:Reihe_B/56/ZNB-2001-56b-0085.pdf 
 Identifier    ZNB-2001-56b-0085 
 Volume    56 
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