Filters

2010 - 201932

More filters

202032
Reset filters

Settings

Author: Spannenberg, A. × End date: 2019 × Start date: 2010 × Type: Text × WGL Institute: LIKAT ×

Search Results

Now showing 1 - 10 of 32
  • Thumbnail Image
    Item
    (μ3-Hydrido)[μ3-2-(trimethylsilyl) ethylidyne-κ3C1:C1:C1] tetrakis[(η5-cyclopentadienyl)cobalt(II)]
    (Chester : International Union of Crystallography, 2013) Haehnel, M.; Spannenberg, A.; Rosenthal, U.
    In the title compound, [Co4(C5H5) 4(μ3-CCH2SiMe3)(μ3-H)], the Co atoms form a distorted tetrahedron with the ethylidyne moiety bridging three of the Co atoms as well as the hydrido ligand also bridging three of the Co atoms. The Co-Co bond lengths in the Co4tetrahedron vary from 2.3844 (4) to 2.4608 (4) Å. Each Co atom is additionally η5-bonded to a cyclopentadienyl (Cp) anion.
  • Thumbnail Image
    Item
    2,6-Bis[(S)-4-benzyl-4,5-dihydro-1,3-oxazol-2-yl]pyridine
    (Chester : International Union of Crystallography, 2011) Möller, K.; Junge, K.; Spannenberg, A.; Beller, M.
    The commercially available title compound, C25H 23N3O2, has been known since 1993 [Nesper et al. (1993). Helv. Chim. Acta, 76, 2239-2249], but has not been structurally characterized until now. In the free ligand, the N atoms of both oxazoline rings point in opposite directions. The phenyl rings make dihedral angles of 30.56 (5) and 84.57 (3)° with the pyridine ring and 72.85 (3)° with each other.
  • Thumbnail Image
    Item
    N,P,P-Triisopropyl-phosphinic amide
    (Chester : International Union of Crystallography, 2011) Peulecke, N.; Aluri, B.R.; Müller, B.H.; Spannenberg, A.; Rosenthal, U.
    The title compound, C9H22NOP, was obtained by slow diffusion of oxygen into a toluene solution of iPr2PNHiPr. In the crystal, an inter-molecular N - H⋯O hydrogen bond occurs.
  • Thumbnail Image
    Item
    Intermolecular hydrogen bonding in isostructural pincer complexes [OH-(t-BuPOCOPt-Bu)MCl] (M = Pd and Pt)
    (Chester : International Union of Crystallography, 2019) Joksch, M.; Spannenberg, A.; Beweries, T.
    In the crystal structure of the isostructural title compounds, namely {2,6-bis[(di-tert-butylphosphanyl)oxy]-4-hydroxyphenyl}chloridopalladium(II), [Pd(C22H39O3P2)Cl], 1, and {2,6-bis[(di-tert-butylphosphanyl)oxy]-4-hydroxyphenyl}chloridoplatinum(II), [Pt(C22H39O3P2)Cl], 2, the metal centres are coordinated in a distorted square-planar fashion by the POCOP pincer fragment and the chloride ligand. Both complexes form strong hydrogen-bonded chain structures through an interaction of the OH group in the 4-position of the aromatic POCOP backbone with the halide ligand.
  • Thumbnail Image
    Item
    {2-[Bis(2,4-di-tert-butylphenoxy)-phosphanyloxy-κP]-3, 5-di-tert-butylphenyl-κC 1}[(1,2,5,6-η)-cycloocta-1,5-diene] rhodium(I) toluene monosolvate
    (Chester : International Union of Crystallography, 2012) Selent, D.; Spannenberg, A.; Börner, A.
    The reaction of (η 3-allyl)[(1,2,5,6-η)-cycloocta-1,5- diene]rhodium(I) with tris-(2,4-di-tert-butylphenyl)phosphite in toluene produces the title compound, [Rh(C 42H 62O 3P)(C 8H 12)]·C 7H 8, by spontaneous metallation at one of the nonsubstituted phenyl ortho-C atoms of the phosphite molecule. The coordination geometry at the Rh I ion is distorted squareplanar. The toluene solvent molecule is disordered over two different orientations, with site-occupation factors of 0.810 (2) and 0.190 (2).
  • Thumbnail Image
    Item
    Crystal structure of tricarbonyl(N-diphenylphosphanyl-N,N'-diisopropyl-P-phenylphosphonous diamide-κ2 P,P')cobalt(I) tetracarbonylcobaltate(-I) toluene 0.25-solvate
    (Chester : International Union of Crystallography, 2014) Dura, L.; Spannenberg, A.; Beweries, T.
    The asymmetric unit of the title compound, [Co(C24H30N2P2)(CO)3][Co(CO)4]·0.25C7H8, consists of two crystallographically independent cations with similar conformations, two anions, and one-half of a toluene molecule disordered about an inversion centre. In the cations, a Co/P/N/P four-membered slightly bent metallacycle is the key structural element. The pendant NH group is not coordinated to the CoI atom, which displays a distorted trigonal-bipyramidal coordination geometry. Weak interionic hydrogen bonds are observed between the NH groups and a carbonyl group of the tetrahedral [Co(CO)4]- anions.
  • Thumbnail Image
    Item
    (η6-Benzene)(carbonato-κ2O,O') [dicyclohexyl(naphthalen-1-ylmethyl)phosphanejP] ruthenium(II) chloroform trisolvate
    (Chester : International Union of Crystallography, 2014) Gowrisankar, S.; Neumann, H.; Spannenberg, A.; Beller, M.
    The title compound, [Ru(CO3)(η6-C 6H6){(C6H11)2P(CH 2-C10H7)}]-3CHCl3, was synthesized by carbonation of [RuCl2-(η6-C6H 6){(C6H11)2P(CH2C 10H7)}] with NaHCO3in methanol at room temperature. The RuIIatom is surrounded by a benzene ligand, a chelating carbonate group and a phosphane ligand in a piano-stool configuration. The crystal packing is consolidated by C-H⋯O and C-H⋯Cl hydrogen-bonding interactions between adjacent metal complexes and between the complexes and the solvent molecules. The asymmetric unit contains one metal complex and three chloroform solvent molecules of which only one was modelled. The estimated diffraction contributions of the other two strongly disordered chloroform solvent molecules were substracted from the observed diffraction data using the SQUEEZE procedure in PLATON.
  • Thumbnail Image
    Item
    (Isopropyl-amino)(meth-yl)diphenyl-phospho-nium iodide
    (Chester : International Union of Crystallography, 2011) Peulecke, N.; Peitz, S.; Müller, B.H.; Spannenberg, A.; Rosenthal, U.
    The title compound, C 16H 21NP +· I -, was obtained by the reaction of PH 2PN( iPr)P(Ph)N( iPr)H with MeI involving cleavage of one of the P - N bonds in diethyl ether. The two phenyl rings form a dihedral angle of 82.98 (5)°. A weak donor-acceptor N - H⋯I inter-action is observed.
  • Thumbnail Image
    Item
    (tert-Butylimido)bis(η5-cyclopenta-dienyl) pyridinezirconium(IV)
    (Chester : International Union of Crystallography, 2010) Kaleta, K.; Arndt, P.; Spannenberg, A.; Rosenthal, U.
    The title compound, [Zr(C5H5)2(C 4H9N)(C5H5N)], was obtained from the reaction of (C5H5)2Zr(py)(η2- Me3SiC2SiMe3) (py is pyridine) and tBuN=C=NtBu alongside the formation of (C 5H5)2Zr(CNtBu)(2-Me 3SiC2SiMe3). The zirconium atom is coordinated in a distorted tetrahedral geometry by two cyclopentadienyl ligands, a pyridine ligand, and a tertbutylimido ligand via a Zr=N double bond. The tertbutyl group is disordered over two positions in a 0.634 (5):0.366 (5) ratio.
  • Thumbnail Image
    Item
    Crystal structure of (1S, 2R,4S)-1-((phenylamino)methyl)-4-(prop-1-en-2-yl) cyclohexane-1,2-diol), C16H23NO2
    (Heidelberg : Springer, 2011) Outouch, R.; Boualy, B.; El Firdoussi, L.; Ali, M.A.; Rizzoli, C.; Spannenberg, A.
    C16H23NO2, orthorhombic, P2 12121 (no. 19), a = 5.9637(3) Å, b = 8.8317(5) Å, c = 27.809(1) Å, V = 1464.7 Å3, Z = 4, Rgt(F) = 0.026, wRref(F2) = 0.040, T= 150 K.