| 1. |
- Abbasi, Alireza, et al.
(författare)
-
N,N '-bis(2,6-dichlorobenzyl)ethylene-diimine
- 2007
-
Ingår i: Acta Crystallographica Section E. - 1600-5368. ; 63, s. o3773-U2712
-
Tidskriftsartikel (refereegranskat)abstract
- In the centrosymmetric title compound, C16H12Cl4N2, the asymmetric unit is one half-molecule. Weak van der Waals interactions between the molecules are effective in the molecular packing. This is the first reported structure of a chloro-substituted benzaldehyde derivative that can potentially form a tetradentate ligand.
|
|
| 2. |
- Abdel-Magied, Ahmed, et al.
(författare)
-
[(mu)-Bis(diphenylphosphanyl-kappa P)methane]decacarbonyltri-(mu)-hydrido-trirhenium(I)(3 Re-Re) dichloromethane solvate
- 2011
-
Ingår i: Acta Crystallographica Section E: Structure Reports Online. - 1600-5368. ; 67:12, s. 1601-1816
-
Tidskriftsartikel (refereegranskat)abstract
- In the title compound, [Re(3)(mu-H)(3)(C(25)H(22)P(2))(CO)(10)]center dot CH(2)Cl(2), the three Re atoms form a triangle bearing ten terminal carbonyl groups and three edge-bridging hydrides. The bis(diphenylphosphanyl) methane ligand bridges two Re atoms. Neglecting the Re-Re interactions, each Re atom is in a slightly distorted octahedral coordination environment. The dichloromethane solvent molecule is disordered over two sets of sites with fixed occupancies of 0.6 and 0.4.
|
|
| 3. |
- Aberg, V., et al.
(författare)
-
Synthesis and absolute configuration of methyl(-)-(3R)-8-(4-bromophenyl)-7-(naphthalen-1-yl-methyl)-5-oxo-2,3-dihydro-5H-thiazolo 3,2-a pyridine-3-carboxylate
- 2002
-
Ingår i: Acta Crystallographica Section E. - : International Union of Crystallography (IUCr). - 1600-5368. ; 58, s. o812-o814
-
Tidskriftsartikel (refereegranskat)abstract
- The title molecule, C26H20BrNO3S, contains a ring-fused 2-pyridinone framework substituted with a 4-bromo-phenyl-, a naphthalen-1-ylmethyl and a methoxycarbonyl substituent. The main goal of this work was to confirm the stereochemistry for the methoxycarbonyl substituent, which proved to be 3R. Moreover, the 4-bromophenyl substituent was shown to be rotated out of the plane of the 2-pyridinone ring, with a torsion angle of 61.2 (5)degrees. To allow the best packing arrangement, the naphthalen-1-ylmethyl substituent is positioned to mediate an intermolecular pi-pi interaction.
|
|
| 4. |
- Alam, Samina, et al.
(författare)
-
cis-(9S,10S)-Methyl 1-propyl-1,2,3,4-tetrahydro-beta-carboline-3-carboxylate
- 2008
-
Ingår i: Acta Crystallographica Section E. - : International Union of Crystallography (IUCr). - 1600-5368. ; 64, s. O361-U1624
-
Tidskriftsartikel (refereegranskat)abstract
- The title compound, C16H20N2O2, was synthesized from ( S)tryptophan methyl ester hydrochloride and butyraldehyde. The absolute configuration 9S, 10S was assigned on the basis of the unchanging chirality of the C9 centre. The NH group of the indole ring is involved in intermolecular N-H center dot center dot center dot O hydrogen bonding, while the NH group of the six-membered ring is not. This latter ring has a half-chair conformation.
|
|
| 5. |
- Alam, Samina, et al.
(författare)
-
Methyl 2-(2-hydroxyacetamido)benzoate
- 2010
-
Ingår i: Acta Crystallographica Section E. - 1600-5368. ; 66, s. O913-U2993
-
Tidskriftsartikel (refereegranskat)abstract
- The title compound, C10H11NO4, was formed from 4,1-benzoxazepine-2,5(1H,3H)-dione and ammonia gas. Intramolecular hydrogen bonding is present between the amide N-H group and the carbonyl O atom of the ester group. The crystal structure features intermolecular O-H center dot center dot center dot O hydrogen bonds.
|
|
| 6. |
- Alam, Samina, et al.
(författare)
-
trans-(1R,3S)-methyl 1-methyl-1,2,3,4-tetrahydro-beta-carboline-3-carboxylate
- 2007
-
Ingår i: Acta Crystallographica Section E. - : International Union of Crystallography (IUCr). - 1600-5368. ; 63, s. O871-O872
-
Tidskriftsartikel (refereegranskat)abstract
- The title compound, C14H16N2O2, was obtained from the reaction between S-tryptophan methyl ester hydrochloride and acetaldehyde. The molecule adopts a trans configuration, with the methyl and methoxycarbonyl groups located on opposite sides of the central tetrahydro-beta-carboline unit. Bifurcated intermolecular N-H...O/N hydrogen bonds link the molecules into chains.
|
|
| 7. |
- Ali, Sharafat, 1976-, et al.
(författare)
-
A cubic calcium oxynitrido-silicate, Ca2.89Si2N1.76O4.24
- 2011
-
Ingår i: Acta Crystallographica Section E. - 1600-5368. ; 67
-
Tidskriftsartikel (refereegranskat)abstract
- The title compound, tricalcium oxynitride silicate, withcomposition Ca3-xSi2N2-2xO4+2x (x ’ 0.12), is a perovskiterelatedcalcium oxynitrido silicate containing isolated oxynitridosilicate 12-rings. The N atoms are statistically disorderedwith O atoms (occupancy ratio N:O = 0.88:0.12) and occupythe bridging positions in the 12 ring oxynitrido silicate anion,while the remaining O atoms are located at the terminalpositions of the Si(O,N)4 tetrahedra. The majority of the Ca2+cations fill the channels along [100] in the packing of the 12-ring anions. The rest of these cations are located at severalpositions, with partial occupancy, in channels along the bodydiagonals.
|
|
| 8. |
- Andersson, Pierre, et al.
(författare)
-
The furanosteroid viridiol
- 2013
-
Ingår i: Acta Crystallographica Section E: Structure Reports Online. - 1600-5368. ; E69, s. o467-o468
-
Tidskriftsartikel (refereegranskat)abstract
- The asymmetric unit of the title compound, C20H18O6 (systematic name: 1,3-dihydroxy-2-methoxyfuro[4',3',2':4,5,6]-18-norandrosta-8,11,13-triene-7,17-dione), a dihydro derivative of the fungal steroid viridin, contains two molecules with similar conformations. The rings bearing the hydroxy groups adopt boat conformations. The absolute structure was assigned based on the known chirality of a precursor compound. In the crystal, molecules are linked by O-HO hydrogen bonds, generating a three-dimensional network and weak C-HO interactions consolidate the packing.
|
|
| 9. |
- Banenzoue, Charles, et al.
(författare)
-
Non-isovalent substitution in a Zintl phase with the TiNiSi type structure, CaMg1-xAgxGe [x=0.13 (3)]
- 2009
-
Ingår i: Acta Crystallographica Section E. - 1600-5368. ; 65, s. i90-U56
-
Tidskriftsartikel (refereegranskat)abstract
- Single crystals of the title Ag-substituted calcium magnesium germanide, CaMg1-xAgxGe [x = 0.13 (3)] were obtained from the reaction of the corresponding elements at high temperature. The compound crystallizes with the TiNiSi structure type (Pearson code oP12) and represents an Ag-substituted derivative of the Zintl phase CaMgGe in which a small fraction of the divalent Mg atoms have been replaced by monovalent Ag atoms. All three atoms in the asymmetric unit (Ca, Mg/Ag, Ge) occupy special positions with the same site symmetry (.m.). Although the end member CaAgGe has been reported in an isomorphic superstructure of the same TiNiSi type, higher Ag content in solid solutions could not be achieved due to competitive formation of other, perhaps more stable, phases.
|
|
| 10. |
|
|
