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Search Results: 1 - 10 of 302868 matches for " Alan J. Lough "
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[1,1′-Bis(diphenylphosphino)ferrocene]carbonyl[dihydrobis(pyrazol-1-yl)borato]hydridoruthenium(II) acetone solvate
Seong Huh,Alan J. Lough
Acta Crystallographica Section E , 2008, DOI: 10.1107/s1600536808037100
Abstract: In the title compound, [FeRu(C17H14P)2(C6H8BN4)H(CO)]·C3H6O, the RuII ion is coordinated in a distorted octahedral environment involving a hydride ligand, a carbonyl ligand and two bidentate ligands. Of the two bidentate ligands, the bulky 1,1′-bis(diphenylphosphino)ferrocene (dppf) ligand chelates with a larger bite angle of 101.90 (2)°, whereas the bite angle of the [H2Bpz2] ligand (pz = pyrazolyl) is 85.67 (7)°. The latter ligand creates an RuN4B six-membered ring with a boat conformation, which puckers towards the site of the small hydride ligand. The hydride ligand is cis with respect to the carbonyl ligand and trans to one of the P atoms of the dppf ligand. In the crystal structure, there are weak intermolecular C—H...O hydrogen bonds between complex molecules and acetone solvent molecules.
Tetraphenylarsonium cis-bis[1,2-bis(trifluoromethyl)ethene-1,2-dithiolato]platinate(II)
Stephanie Hosking,Alan J. Lough,Ulrich Fekl
Acta Crystallographica Section E , 2009, DOI: 10.1107/s1600536809021527
Abstract: In the title compound, (C24H20As)[Pt(C4F6S2)2], the cation lies on a twofold rotation axis while the anion has crystallographic inversion symmetry. The PtII ion is in a slightly distorted square-planar coordination environment. The F atoms of both unique –CF3 groups are disordered over two sets of sites, the ratios of refined occupancies being 0.677 (15):0.323 (15) and 0.640 (16):0.360 (16). The crystal structure is the first to date of a monoanionic [Pt(tfd)2] species [tfd is 1,2-bis(trifluoromethyl)ethene-1,2-dithiolate] with a non-redox-active cation.
Tetrakis[3,5-bis(trifluoromethyl)phenyl]tin(IV)
Daniel Foucher,Damion Miles,Alan J. Lough
Acta Crystallographica Section E , 2009, DOI: 10.1107/s1600536809019588
Abstract: The title molecule, [Sn(C8H3F6)4], lies on a twofold rotation axis with the SnIV ion in a distorted tetrahedral coordination environment. Both –CF3 groups attached to one of the unique benzene rings are disordered over two sets of sites, with the ratios of refined occupancies being 0.719 (14):0.281 (14) and 0.63 (5):0.37 (5).
Tetra-tert-butyl 13,14-dioxapentacyclo[8.2.1.14,7.02,9.03,8]tetradeca-5,11-diene-5,6,11,12-tetracarboxylate
Alan J. Lough,Kelsey Jack,William Tam
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812039220
Abstract: The stereochemistry of the title compound, C32H44O10, at the cyclobutane ring is cis-anti-cis. The molecule lies across an inversion center. In the crystal, weak C—H...O hydrogen bonds connect molecules into chains along [100], forming R22(6) rings.
[(R)-2,2-Bis(diphenylphosphanyl)-1,1′-binaphthyl-κ2P,P′]{2-[(2R)-1,2-diamino-1-(4-methoxyphenyl)-3-methylbutyl]-5-methoxyphenyl-κC1}hydridoruthenium(II) benzene monosolvate
Kamaluddin Abdur-Rashid,Alan J. Lough
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812046065
Abstract: In the title complex, [Ru(C19H25N2O2)H(C44H32P2)]·C6H6, the RuII ion is in a distorted octahedral coordination environment with the hydride H atom trans to the tertiary carbinamine N atom, giving an H—Ru—N angle of 160.8 (12)°. The equatorial sites are occupied by two P atoms, the secondary carbinamine N atom and a coordinated C atom.
Tetramethyl 1,4-dimethyl-13,14-dioxapentacyclo[8.2.1.14,7.02,9.03,8]tetradeca-5,11-diene-5,6,11,12-tetracarboxylate
Alan J. Lough,Kelsey Jack,William Tam
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812039219
Abstract: In the title compound, C22H24O14, the relative stereochemistry at the cyclobutane ring is cis-anti-cis and the methyl groups in the bicyclic rings are syn to each other. The two carboxylate groups attached to the same —C=C— bond are disordered over two sets of sites in a 0.603 (2):0.397 (2) ratio. In the crystal, weak C—H...O hydrogen bonds connect molecules into C(12) chains along [001] incorporating R222(10) rings.
Hexamethyl 13,14-dioxapentacyclo[8.2.1.14,7.02,9.03,8]tetradeca-5,11-diene-1,4,5,6,11,12-hexacarboxylate
Alan J. Lough,Kelsey Jack,William Tam
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812039232
Abstract: In the title compound, C24H24O14, the stereochemistry at the cyclobutane ring is cis-anti-cis and the –COOMe groups in the bicyclic rings are syn to each other. The molecule lies on a twofold rotation axis. In the crystal, weak C—H...O hydrogen bonds connect molecules into chains along [001], forming R22(10) rings.
2,2′-[(1S,2S)-1,2-Bis(2-hydroxyphenyl)ethane-1,2-diyl]bis(isoindoline-1,3-dione) ethanol monosolvate hemihydrate
Jik Chin,Dongsoo Koh,Alan J. Lough
Acta Crystallographica Section E , 2013, DOI: 10.1107/s1600536813003978
Abstract: In the title compound, C30H20N2O6·C2H6O·0.5H2O, the solvent water molecule lies on a twofold rotation axis. The dihedral angle between the essentially planar isoindole ring systems [maximum deviations = 0.028 (1) and 0.022 (1) ] is 47.12 (5)°. The dihedral angle between the benzene rings is 81.32 (7)°. In the crystal, the components are linked into a three-dimensional network via O—H...O hydrogen bonds.
[1,2-Bis(dimethylphosphino)ethane]carbonyl(η5-cyclopentadienyl)iron(II) diphenylphosphinoylborate
Kajin Lee,Alan J. Lough,Ian Manners
Acta Crystallographica Section E , 2008, DOI: 10.1107/s1600536807068651
Abstract: In the title compound, [Fe(C5H5)(C6H16P2)(CO)](C12H13BOP), the FeII ion adopts a three-legged piano-stool geometry, with Fe...Cg = 1.721 (5) (Cg = the centroid defined by the C atoms of the cyclopentadienyl ring). The 1,2-bis(dimethylphosphino)ethane (dmpe) ligand chelates to form a five-membered C2P2Fe ring which is in a pseudo-half-chair conformation. In the crystal structure, associations of one cation and two anions are formed via weak intermolecular C—H...O hydrogen bonds, giving rise to R42(9) rings.
(4-Cyanophenolato)(subphthalocyaninato)boronElectron-withdrawing groups in the para position of the phenoxy molecular fragment. Part 3. For Part 1, see: Paton et al. (2010b); for Part 2, see: Paton et al. (2011).
Andrew S. Paton,Alan J. Lough,Timothy P. Bender
Acta Crystallographica Section E , 2011, DOI: 10.1107/s1600536811000869
Abstract: The crystal structure of the title compound, C31H16BN7O, (CNPhO-BsubPc) is characterized by pairs of π–π stacking interactions between the concave faces of inversion-related BsubPc fragments with a centroid–centroid distance of 3.600 (1) . In addition, these pairs of molecules are linked into chains along [101] through further weak π–π stacking interactions with a centroid–centroid distance of 3.8587 (9) . There are also weak C—H...π(arene) interactions within the chains.
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