19 results
Search Results
Now showing 1 - 10 of 19
- ItemCrystal structure of bis(pentamethylcyclopentadienyl)-(4,4′-di-tert- butylbipyridyl)hafnium(IV)-hexane (1:0.5), Hf(C10H15) 2(C18H24N2) · 0.5C 6H14(Berlin : de Gruyter, 2010) Beweries, T.; Spannenberg, A.; Rosenthal, U.C41H61HfN2, monoclinic, P21/n (no. 14), a = 13.4410(4) Å, b = 13.9983(6) Å, c = 21.1996(8) Å, β = 98.144(3)°, V = 3948.5 Å3, Z = 4, Rgt(F) = 0.051, wRref(F2) = 0.121,T = 200 K. © 2014 Oldenbourg Wissenschaftsverlag, München.
- ItemCrystal structure of 1-bis(((1R,2S,5R)-2-isopropyl-5-methylcyclohexyl) cyclopentadienyl)-1-trimethylphosphine-2,3-bis(trimethylsilyl) -1-hafnacycloprop-2-ene-hexane (1:0.5), (HfC8H18Si 2)(C15H22)2(PC3H 9) · 0.5C6H14(Berlin : de Gruyter, 2010) Klahn, M.; Spannenberg, A.; Rosenthal, U.C44H78HfPSi2, tetragonal, P4 1212 (no. 92), a = 14.9634(2) Å, c = 44.9270(8) Å, V = 10059.3 Å3, Z = 8, Rgt(F) = 0.026, wRref(F2) = 0.073, T = 200 K. © by Oldenbourg Wissenschaftsverlag, München.
- ItemCrystal structure of bis(pentamethylcyclopentadienyl)(1-tert- butylisocyanido)-2-trimethylsilyl-3-[(trimethylsilyl)ethynyl]-hafnacyclopropene, (C10H15)2(C5H9N) Hf(C10H18Si2)(Berlin : de Gruyter, 2010) Beweries, T.; Spannenberg, A.; Rosenthal, U.C35H57HfNSi2, monoclinic, P121/c1 (no. 14), a = 10.7410(3) Å, b = 16.2302(5) Å, c = 21.6945(7) Å, β = 104.512(2)°, V = 3661.3 Å3, Z = 4, R gt(F) = 0.049, wRref(F2) = 0.138, T = 200 K. © 2014 Oldenbourg Wissenschaftsverlag, München.
- ItemIodidobis(≠5-penta-methyl-cyclo-penta-dien-yl)titanium(III)(Chester : International Union of Crystallography, 2010) Kessler, M.; Spannenberg, A.; Rosenthal, U.In the title complex mol-ecule, [Ti(C10H15) 2I], the paramagnetic Ti(III) atom is coordinated by two penta-methyl-cyclo-penta-dienyl (Cp*) ligands and one iodide ligand. The two Cp*ligands are in a staggered orientation. The coordination geometry at the titanium atom can be described as distorted trigonal-planar.
- ItemTris(η5-cyclopentadienyl)hafnium(III)(Chester : International Union of Crystallography, 2011) Burlakov, V.V.; Arndt, P.; Spannenberg, A.; Rosenthal, U.In the crystal structure of the title compound, [Hf(C5H 5)3], three cyclopentadienyl ligands surround the Hf III atom in a trigonal-planar geometry. The molecule lies on a sixfold inversion axis.
- Item2,4-Bis(diphenyl-phosphan-yl)-1,1,2,3,3,4-hexa-phenyl-1,3-diphospha-2, 4-dibora-cyclo-butane tetra-hydro-furan sesqui-solvate(Chester : International Union of Crystallography, 2012) Peulecke, N.; Müller, B.H.; Spannenberg, A.; Rosenthal, U.In the title compound, C60H50B2P 4·1.5C4H8O, the diphospha-diborane mol-ecule lies on an inversion centre, whereas the disordered tetra-hydro-furan solvent mol-ecule is in a general position with a partial occupancy of 0.75. The diphosphadiborane mol-ecule consists of an ideal planar four-membered B 2P2 ring with an additional phenyl and a-PPH2 group attached to each B atom.
- Item(Cyanido-κC)(2,2-diphenylacetamido-κ2 N,O)bis(η5-pentamethylcyclopentadienyl)zirconium(IV)(Chester : International Union of Crystallography, 2014) Becker, L.; Spannenberg, A.; Arndt, P.; Rosenthal, U.In the title compound, [Zr(C10H15)2(C14H12NO)(CN)], the ZrIV atom is coordinated by two pentamethylcyclopentadienyl ligands, the amidate ligand via the N and O atoms, and an additional C N ligand. The four-membered metallacycle is nearly planar (r.m.s. deviation = 0.008Å). In the crystal, the molecules are connected into centrosymmetric dimers via pairs of N - HN hydrogen bonds.
- ItemDi-μ-sulfido-bis{[rac-1,2-bis(η5-4,5,6, 7-tetrahydroinden-1-yl)ethane]zirconium(IV)} toluene monosolvate(Chester : International Union of Crystallography, 2012) Haehnel, M.; Altenburger, K.; Spannenberg, A.; Arndt, P.; Rosenthal, U.The title dimeric zirconium complex, [Zr3(C20H 24)2S2]·C7H8, was obtained from the reaction of (ebthi)Zr(η2-Me3Si-C2-SiMe3) [ebthi is rac-1,2-bis(η5-4,5,6,7-tetrahydroinden-1-yl)ethane] and S=C=N-ada (ada = adamantan-1-yl) along with the formation of the isonitrile C N-ada. Each ZrIV atom is coordinated by the sterically hindered ebthi ligand and two μ-sulfide ligands in a strongly distorted tetrahedral geometry. The [ZrS]2 unit is almost planar (mean deviation from the best plane of the four atoms = 0.025Å). A -CH2-CH2- group in one ebthi ligand was disordered over two sites, with refined occupancy factors of 0.551(6) and 0.449(6). The asymmetric unit also contains a toluene solvent molecule.
- Item[2,2-Bis(diphenylphosphanyl)propane κ2P,P0] tetracarbonylchromium(0)dichloromethane monosolvate(Chester : International Union of Crystallography, 2010) Peulecke, N.; Peitz, S.; Müller, B.H.; Spannenberg, A.; Rosenthal, U.The title compound, [Cr(C27H26P2)(CO) 4]·CH2Cl2, was obtained by the reaction of Ph2PCMe2PPh2 with Cr(CO)6 in refluxing toluene by substitution of two carbonyl ligands. The CrC 4P2 coordination geometry at the Cr atom is distorted octa-hedral, with a P - Cr - P bite angle of 70.27 (2)°.
- 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.