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Structures of diphospho-myo-inositol pentakisphosphate and bisdiphospho-myo-inositol tetrakisphosphate from Dictyostelium resolved by NMR analysis

Autor: U Thiel, R Eujen, C M Weisshuhn, Tim Laussmann, Günter Vogel

Publikováno v: Biochemical Journal. 315:715-720

Diphospho-myo-inositol phosphates (PP-InsP5 and bis-PP-InsP4) were isolated from Dictyostelium in order to clarify the precise positional isomerism by two-dimensional 1H/31P-NMR analysis. The diphosphorylated inositol phosphates are 4-PP-Ins(1,2,3,5,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b66e0453508deab59b1a362ac63609ea
https://doi.org/10.1042/bj3150715

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Preparation and characterization of silver sheathed BSCCO-2223 tapes

Autor: D. Busch, R. Eujen, Bernhard Fischer, R. Theisejans, Helmut Piel, Beate Lehndorff

Publikováno v: IEEE Transactions on Appiled Superconductivity. 5:1251-1254

Critical current densities of 17000 A/cm/sup 2/ were achieved in short samples of Bi-2223/Ag tapes prepared by a conventional powder in tube technique. The preparation was varied to get an optimum grain size and texture of the microstructure. Microst

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5c807eee26fcd4a0c72b49efccb5b2e2
https://doi.org/10.1109/77.402788

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Dismutierungsreaktionen der trifluormethyl(halogen)stannane, (CF3)nSnX4 − n (X = Cl, Br, I)

Autor: R. Eujen, N. Jahn

Publikováno v: Journal of Fluorine Chemistry. 71:75-79

Trifluoromethyl/halide exchange has been studied for (CF3)nSnX4 − n (n = 1, 2; X = Cl, Br, I) by 19F NMR spectroscopy at elevated temperature and has been utilized for an improved synthesis of (CF3)2SnBr2. The otherwise not readily accessible (CF3)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::63cab7bf3df4f411bd5f83ad733f6084
https://doi.org/10.1016/0022-1139(94)03156-t

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Trifluormethyl-substituierte Plumbane—Darstellung, Eigenschaften und NMR-spektroskopische Charakterisierung von CF3PbR2H (R = CH3, C2H5) sowie von CF3Pb(II)-Derivaten

Autor: R. Eujen, A. Patorra

Publikováno v: Journal of Organometallic Chemistry. 481:75-82

Unstable CF 3 PbMe 2 H has been isolated from the reaction of CF 3 PbMe 2 Br with Bu 3 SnH and has been identified by low temperature multinuclear NMR spectroscopy. Its decomposition yields the compounds CF 3 (CF 2 H)PbMe 2 and (CF 3 Me 2 Pb) 2 . Evi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2188a610b8ef070d1dfd7190a2d5f8d8
https://doi.org/10.1016/0022-328x(94)85011-9

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Synthesis and properties of trifluoromethylated stannanes. The formation and NMR spectra of the difluoromethylstannanes (CF3)n(CF2H)mSn(CH3)4-n-m

Autor: N. Jahn, R. Eujen, U. Thurmann

Publikováno v: Journal of Organometallic Chemistry. 465:153-160

Difluoromethylstannanes have been obtained by hydrogenation of (CF3)4Sn with the hydrides (CH3)3MH (M  Sn, Ge). The reaction is shown to proceed via attack of the hydride on the tin atom; transfer of fluoride from the CF3 group to the MMe3 group a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a1a949aba48239bcde0879bcd45884df
https://doi.org/10.1016/0022-328x(94)87049-7

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Critical current densities and activation energy of BiPbSrCaCuO tapes

Autor: J. Huedepohl, A. Gladun, R. Eujen, K. Fischer, G. Fuchs, D. Busch

Publikováno v: IEEE Transactions on Applied Superconductivity. 3:1390-1393

The critical current density and the resistive transition curves of Ag-sheathed, textured (Bi/sub 1-x/Pb/sub x/)/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O/sub 10/ tapes have been studied in magnetic fields up to 12 T. The results can be described by the mod

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ea80234ea7a8dbc164c8051f523989cf
https://doi.org/10.1109/77.233639

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