Newsletter

search results

results of search on CRYSTALLOGRAPHY JOURNALS ONLINE

77 citations found for Abboud, K.

Search for Abboud, K. in the World Directory of Crystallographers

Select bibliographic records for downloading using the checkboxes or select all button

Results 1 to 20, sorted by name:


Download citation
Download citation


Download citation
Download citation


Download citation
Download citation

link to html
The structure of the title compound, [MnCl3(C12H12N2)].CH3CN, consists of monomeric manganese(III) species with distorted trigonal bipyramidal geometry; Mn-N(ax.) 2.035 (1), Mn-N(eq.) 2.096 (1), Mn-Cl(ax.) 2.2187 (5), Mn-Cl(eq.) 2.2587 (5) and 2.3117 (5) Å. The Mn complexes stack as pairs in columns along the a axis, separated by columns of acetonitrile. Spacing between the MnIII atoms is not uniform and alternating distances of 6.704 (1) (-x, -y, -z) and 7.713 (1) Å (1 - x, -y, -z) are observed.

Download citation
Download citation


Download citation
Download citation

link to html
The Pt atom has square-planar coordination in the title complex, [Pt(C12H16)(C18H15P)2].0.85C4H8O. The bidentate ligand is not in the plane of coordination, but forms an angle of 162.6 (3)° with it. The PPh3 ligands are in the cis conformation. The Pt-P lengths are different [2.311 (1) and 2.348 (1) Å] and the P-Pt-P angle is 94.77 (5)°.

Download citation
Download citation


Download citation
Download citation

link to html
The structures of 4,4-dibenzyloxetan-2-one, C17H16O2, (1), and 4,4-dibenzyl-3,3-difluorooxetan-2-one, C17H14O2F2, (2), were determined in order to relate their structures to differences in their reactivities toward nucleophiles and thermal decarboxylation. The lactone rings in the two compounds are different, with the former exhibiting a planar ring, while the latter has a bent ring and an average endocyclic torsion angle of 6.8 (2)°. Bond distances of the CO2 fragment are shorter in compound (2) than in their counterparts in (1).

Download citation
Download citation

link to html
The title compound 1, [Ru(C5H5)(C6H12O)Cl(CO)], was synthesized from carbonyl-([eta]5-cyclopentadienyl)(2-ethoxy)-1-Ruthenacyclopentene by treatment with HCl. Ru has a distorted tetrahedron geometry that is best described as a tri-legged piano stool. The cyclopentadienyl (cp) ring is asymmetrically bonded with Ru-C distances ranging from 2.188 (8) to 2.297 (7) Å.

Download citation
Download citation


Download citation
Download citation

link to html
The crystal structure of p-nitrophenyl 2,3,4,6-tetra-O-acetyl-[beta]-D-glucopyranoside, C20H23NO12, was determined to ascertain its stereochemistry. The ring adopts a 3C5 chair conformation, with C3 and O5 atoms at distances of 0.60 (1) and -0.72 (1) Å, respectively, on opposite sides of the C1, C2, C4 and C5 plane. All substituents are in equatorial positions. The carbonyl bonds of the acetyl groups on C2, C3 and C4 are nearly coplanar with their respective ring C-H bonds and point in the same direction.

Download citation
Download citation


Download citation
Download citation



Download citation
Download citation


Download citation
Download citation

link to html
The title compound, C11H15NO4, was synthesized as an intermediate in a synthesis of the morphine skeleton. The two six-membered rings adopt 4H3 half-chair conformations. The five-membered ring is in an envelope (E) conformation. Chains of the molecules hydrogen bonded through the allylic hydroxyl and carbonyl groups extend along the b axis. These chains are cross-linked along the [101] direction by hydrogen bonds between the adjacent secondary OH group and the allylic O atom [allylic O...O(x, 1 + y, z) 2.836 (2) Å, O-H...O 133 (2)°; secondary hydroxyl O...O({1\over 2} + x, {3\over 2} - y, 1 - z) 2.751 (2) Å, O-H...O 174 (2)°].

Download citation
Download citation


Download citation
Download citation

link to html
The reaction of dipicolinic acid (2,6-pyridinedicarboxylic acid) with FeCl3 results in the unusual title ion-pair compound, [Fe(C7H3NO4)(H2O)3][Fe(C7H3NO4)2].6H2O. Each Fe atom has an octahedral geometry. The dipicolinate ligands are nearly planar, with the two in the anion being perpendicular to each other and displaying a dihedral angle of 93.74 (6)°. The Fe-O(carboxylate) bond distances are comparable and range from 2.008 (2) to 2.028 (2) Å, while the Fe-N distances are 2.059 (2), 2.054 (2) and 2.054 (2) Å. The Fe-O(water) distances are 1.971 (2), 1.987 (2) and 2.004 (2) Å. The cation, anion and water molecules are involved in an extensive three-dimensional hydrogen-bonding network, with O...O distances ranging from 2.36 (2) to 2.953 (3) Å and angles ranging from 129 to 177°.

Download citation
Download citation


Download citation
Download citation

link to html
The crystal structures of (4a[alpha],8[alpha],8a[alpha])-(±)-1-oxoperhydro-8-hydroxy-naphthyl p-bromobenzoate, C17H19BrO3, (2), and (±)-endo-5-hydroxy-1-methylbicyclo[4.3.1.]decan-7-one, C11H18O2, (3), were determined to ascertain their relative configurations. Compound (2) has two cis-fused six-membered rings and both adopt chair conformations. Compound (3) has a bridged bicyclic ring system consisting of a six- and a seven-membered ring which both adopt chair conformations. Molecules of (3) are linked about inversion centres into dimers by O-H...O hydrogen bonds [O...O 2.844 (3) Å] involving the hydroxy and carbonyl groups.


Follow IUCr Journals
Sign up for e-alerts
Follow IUCr on Twitter
Follow us on facebook
Sign up for RSS feeds