Results
author = "Howie, R. Alan"
2-[(E)-Phenyl(2-phenylhydrazin-1-ylidene)methyl]phenol
Description :
In the title hydrazone derivative, C19H16N2O, a twist is found between the hydroxyphenyl and N-bound phenyl rings [dihedral angle = 24.37 (7)°]. The C-bound phenyl ring is almost perpendicular to each of these planes [dihedral angles = 75.30 (7) and 86.00 (7)°, respectively]. The conformation abou...
Repository :
Europe PubMed Central
Language(s) :
English
2-Benzoylspiro[1H-isoindole-1,3'-isochromene]-1',3,4'(2H,3'H)-trione
Author(s) :
McSweeney, Nigel
,
Pratt, Albert C.
,
Creaven, Bernadette S.
,
Long, Conor
,
Howie, R. Alan
Description :
The title compound, C₂₃H₁₃NO₅, was isolated following irradiation of N-benzoylphthalimide in toluene. The bond lengths and angles are typical of a molecule of this kind, but the molecule itself is of some interest. The most challenging aspect of the refinement was to devise a model to cater for diso...
Repository :
DORAS
Language(s) :
English
The (1RS,2RS,7RS,8RS)- and (1RS,2SR,7SR,8RS)-diastereoisomers of 8,9,11,12-tetrachloro-N-ethyltricyclo[6.2.2.0²,⁷]dodeca-9,11-diene-1,10-dicarboximide
Author(s) :
Grimley, Fionuala M.
,
O'Donnell, Cormac
,
Pratt, Albert C.
,
Long, Conor
,
Howie, R. Alan
Description :
Two racemic diastereoisomers, C₁₆H₁₅Cl₄NO₂, of the title 1,4-photoadduct of N-ethyltetrachlorophthalimide with cyclohexene have been isolated and their stereostructures determined.
Repository :
DORAS
Language(s) :
English
Bis[2-(ethoxycarbonylamino)ethanaminium] hexabromidostannate
Author(s) :
Howie, R. Alan
,
de Lima, Geraldo M.
,
Tiekink, Edward R. T.
,
Wardell, James L.
,
Wardell, Solange M. S. V.
Description :
In the title salt, (C5H13N2O2)2[SnBr6], the Sn atom (site symmetry ) exists in a slightly distorted octahedral geometry. The cation is non-planar as the terminal CH2NH3
+ residue lies below the plane defined by the remaining non-H atoms. In the crystal, cations associate via N—H⋯O hy...
Repository :
Europe PubMed Central
Language(s) :
English
3-[(E)-(7-Chloro-4-quinolyl)hydrazonomethyl]benzonitrile monohydrate
Author(s) :
de Ferreira, Marcelle L.
,
de Souza, Marcus V. N.
,
Howie, R. Alan
,
Tiekink, Edward R. T.
,
Wardell, James L.
,
Wardell, Solange M. S. V.
Description :
The title monohydrate, C17H11ClN4·H2O, features an essentially planar organic molecule, as seen in the dihedral angle of 2.42 (8)° formed between the quinoline and benzene planes. The conformation about the imine bond is E, and the N—H group is oriented towards the quinoline residue. The major feat...
Repository :
Europe PubMed Central
Language(s) :
English
Dichloridobis(1,10-phenanthroline-5,6-dione-κ2 N,N′)mercury(II)
Author(s) :
Figueiras, Carlos A. L.
,
Bomfim, João A. S.
,
Howie, R. Alan
,
Tiekink, Edward R. T.
,
Wardell, James L.
Description :
In the title compound, [HgCl2(C12H6N2O2)2], the HgII atom is located on a twofold rotation axis and exists within a distorted octahedral geometry defined by a cis-Cl2N4 donor set. Molecules are connected into layers in the ac plane via extensive C—H⋯Cl contacts as each Cl atom forms two such inter...
Repository :
Europe PubMed Central
Language(s) :
English
(S)-6-Chloro-4-cyclopropylethynyl-4-trifluoromethyl-1H-3,1-benzoxazin-2(4H)-one
Author(s) :
Cuffini, Silvia
,
Howie, R. Alan
,
Tiekink, Edward R. T.
,
Wardell, James L.
,
Wardell, Solange M. S. V.
Description :
Two independent molecules comprise the crystallographic asymmetric unit in the title antiretroviral agent Efavirenz, C14H9ClF3NO2, and these have noteworthy differences in conformation. The major difference relates to the orientation of the 2-cyclopropylethynyl residue relative to the six-member...
Repository :
Europe PubMed Central
Language(s) :
English
7-Chloro-4-[(E)-(3-chlorobenzylidene)hydrazinyl]-1λ4-quinolinium 3-chlorobenzoate
Author(s) :
de Souza, Marcus V. N.
,
Howie, R. Alan
,
Tiekink, Edward R. T.
,
Wardell, James L.
,
Wardell, Solange M. S. V.
Description :
The title salt, C16H12Cl2N3
+·C7H4ClO2
−, features a non-planar cation, the dihedral angle between the quinolinium and benzene residues being 18.98 (10)°. The cation adopts an E conformation about the C—N bond, and the amine group is oriented towards the quinolinium res...
Repository :
Europe PubMed Central
Language(s) :
English
2-Bromopyridine-3-carboxylic acid
Author(s) :
Howie, R. Alan
,
Gonçalves, Raoni S.
,
de Souza, Marcus V. N.
,
Tiekink, Edward R. T.
,
Wardell, James L.
Description :
The carboxylic acid residue in the title compound, C6H4BrNO2, is twisted out of the plane of the other atoms, as indicated by the (Br)C—C—C—Ocarbonyl torsion angle of −20.1 (9)°. In the crystal, supramolecular chains mediated by O—H⋯N hydrogen bonds are formed with base vector [201] and C—H⋯O inte...
Repository :
Europe PubMed Central
Language(s) :
English
N′-[(E)-2,6-Dichlorobenzylidene]pyrazine-2-carbohydrazide
Author(s) :
Howie, R. Alan
,
de Souza, Marcus V. N.
,
Wardell, Solange M. S. V.
,
Wardell, James L.
,
Tiekink, Edward R. T.
Description :
The title compound, C12H8Cl2N4O, is non-planar, the dihedral angle formed between the pendant pyrazine and benzene rings being 12.55 (11)°. An intramolecular N—H⋯N hydrogen bond occurs. The amide groups self-associate via N—H⋯O hydrogen bonding, forming supramolecular chains with base vector [101]...
Repository :
Europe PubMed Central
Language(s) :
English