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- ItemSynthesis of unsymmetrical bis(imidoyl)dichlorides of oxalic acid(Berlin : Walter de Gruyter, 2005) Helmholz, F.; Schroeder, R.; Langer, P.Unsymmetrical oxalic acid-bis(imidoyl)dichlorides were prepared from ethyl 2-chloro-2-oxoacetate in three steps.
- ItemCrystal structure of (2,3-bis((2R,5R)-2,5-dimethylphosphonalyl)maleic anhydride)-(η4-norbornadiene)-rhodium(I) tetrafluoroborate, [Rh(C7H8)(C16H24O3P 2)] [BF4](Berlin : de Gruyter, 2007) Holz, J.; Börner, A.; Heller, D.; Drexler, H.-J.C23H32BF4O3P2Rh, orthorhombic, P212121 (no. 19), a = 10.147(2) Å, b = 13.246(3) Å, c = 18.827(4) Å, V = 2530.5 Å3, Z = 4, Rgt(F) = 0.025, wRref(F 2) = 0.067, T = 200 K. © by Oldenbourg Wissenschaftsverlag,.
- Item[1-Dimethylsilyl-2-phenyl-3-(η5-tetramethylcyclopentadienyl) prop-1-en-1-ylκC1](n5-pentamethylcyclopentadienyl)- titanium(III)(Chester : International Union of Crystallography, 2009) Lamač, M.; Spannenberg, A.; Arndt, P.; Rosenthal, U.The title compound, [Ti(C10H15)(C20H 26Si)], was obtained from the reaction of [Ti{5: 1-C5Me4(CH2)}(5-C 5Me5)] with the alkynylsilane PhC2SiMe 2H. The complex crystallizes with two independent mol-ecules in the asymmetric unit, which differ in the conformation of the propenyl unit, resulting in their having opposite helicity. No inter-molecular inter-actions or inter-actions involving the Si- H bond are present. The observed geometrical parameters are unexceptional compared to known structures of the same type.
- ItemCrystal structure of distrontium lanthanum gallium pentaoxide, Sr2LaGaO5(München : R. Oldenbourg Verlag GmbH, 2000) Gesing, T.M.; Uecker, R.; Buhl, J.-C.GaLaO5Sr2, tetragonal, I4/mcm (No. 140), a = 6.9339(4) Å, c = 11.2823(8) Å, V= 542.4 Å3, Z = 4, R(P) = 0.018, wR(P) = 0.027, R(I) = 0.031, T= 295 K.
- ItemCrystal structure of η5-3,6-di-tert-butyl-4- (tris(pentafluorophenyl)boranyloxycarbonyl)-5-(η5- tetramethylcyclopentadienyl-methyl-9,10,11-trimethyl-bicyclo(6.3.0) undeca-4-en-8,10-dienyl)titanium(III) toluene hemisolvate, Ti(C 51H47BF15O2) · 0.5C 7H8(Berlin : de Gruyter, 2008) Spannenberg, A.; Burlakov, V.V.; Rosenthal, U.C54.50H51BF15O2Ti, triclinic, P1̄ (no. 2), a = 11.603(2) Å, b = 12.872(3) Å, c = 18.142(4) Å, α = 76.47(3)°, β = 77.99(3)°, γ = 69.13(3)°, V = 2438.2 Å5, Z = 2, Rgt(F) = 0.048, wRobs(F2) = 0.114, T = 200 K. © by Oldenbourg Wissenchaftsverlag.
- ItemRefinement of the crystal structure of holmium nickel borocarbide, HoNiBC(München : R. Oldenbourg Verlag GmbH, 2000) Geupel, S.; Zahn, G.; Paufler, P.; Graw, G.BCHoNi, tetragonal, P4/nmm (No. 129), a =3.5621(5) Å, c = 7.556(2) Å, V = 95.9 Å3, Z = 2, Rgt(F) = 0.030, wRref(F2) = 0.076, T= 300 K.
- ItemNew electronic device for driving surface acoustic wave actuators(Amsterdam : Elsevier, 2009) Brünig, R.; Mensel, K.; Kunze, R.; Schmidt, H.Surface acoustic wave (SAW) actuators are driven by a high frequency signal. The frequency range for an ideal SAW-generation is usually very narrow banded and may shift depending on various environmental conditions. We present a new electronic device which self-aligns to the optimal excitation frequency within a wide range. Any kind of SAW-actuator can be used. The device continuously scans a certain frequency range and characterizes the SAW-component. The ideal excitation frequency is then determined and used to drive the SAW-device. In case of changes like loading conditions or temperature variations the device automatically readjusts to the optimal frequency and prevents possible damage of the device or actuator in case of an error. © 2009.
- ItemDiacetonitrile[N,N′-bis(2,6-diisopropyl-phenyl)ethane-1,2-diimine] dichloridochromium(II) acetonitrile solvate(Chester : International Union of Crystallography, 2009) Peitz, S.; Peulecke, N.; Müller, B.H.; Spannenberg, A.; Rosenthal, U.The title compound, [CrCl2(CH3CN)2(C 26H36N2)]·CH3CN, was synthesized by the reaction of CrCl2(THF)2 with N,N′-bis-(2,6- diisopropyl-phen-yl)ethane-1,2-diimine in dichloro-methane/acetonitrile. The chromium center is coordinated by two N atoms of the chelating diimine ligand, two chloride ions in a trans configuration with respect to each other, and by two N atoms of two acetonitrile mol-ecules in a distorted octa-hedral geometry.
- ItemCrystal structure of bis(α-allylvalencene)dichlorodipalladium, [PdCl(C15H23)]2(Berlin : de Gruyter, 2009) El Farrouji, A.; el Firdoussi, L.; Ali, M.A.; Karim, A.; Spannenberg, A.C30H46Cl2Pd2, monoclinic, Cl 21 (no. 5), a = 22.0083(6) Å, b = 6.1827(2) Å, c = 21.5654(7) Å, ß = 91.252(2)°, V = 2933.7 Å3, Z = 4, Rgt(F) = 0.019, wRref(F2) = 0.039, T =200K. © 2014 Oldenbourg Wissenschaftsverlag GmbH, Rosenheimer Str. 145, 81671 München. All rights reserved.
- ItemComparison of the molecular properties and morphology of polypropylenes irradiated under different atmospheres and after annealing(Hoboken, NJ [u.a.] : Wiley InterScience, 2006) Krause, Beate; Häußler, Liane; Voigt, DieterElectron-beam irradiation, a well-known way of generating long-chain branching, was used to modify polypropylene. Samples were investigated with differential scanning calorimetry, polarized light microscopy, and size exclusion chromatography. Independently of the atmosphere, postannealing led to the deactivation of residual radicals and to the reduction of the nucleus density. In comparison with the initial polypropylene, the crystallization temperatures increased for nonannealed samples but decreased for annealed samples. Stable products were obtained only by irradiation in nitrogen followed by annealing. A reaction including free radicals with oxygen in the ambient atmosphere led to increasing molar mass degradation and the formation of long-chain branching after Storage. © 2006 Wiley Periodicals, Inc.