PMCC PMCC

Search tips
Search criteria

Advanced
Results 1-12 (12)
 

Clipboard (0)
None

Select a Filter Below

Journals
Authors
more »
Year of Publication
Document Types
1.  4-Bromo-2-({4-[(hy­droxy­imino)­meth­yl]phen­yl}imino­meth­yl)phenol 
In the title compound, C14H11BrN2O2, the mean planes of the two benzene rings are almost parallel to each other, making a dihedral angle of 4.09 (1)°. An intra­molecular O—H⋯N hydrogen bond occurs. In the crystal, inter­molecular O—H⋯N and C—H⋯O hydrogen bonds link the mol­ecules into a chain-like supra­molecular structure.
doi:10.1107/S160053681002698X
PMCID: PMC3007216  PMID: 21588325
2.  2,2′-[Octane-1,8-diyldioxy­bis(nitrilo­methyl­idyne)]diphenol 
The complete mol­ecule of the title compound, C22H28N2O4, is generated by a crystallographic inversion centre at the mid-point of the central C—C bond. The two benzene rings are parallel to each other with a perpendicular inter­planar spacing of 1.488 (2) Å. Intra­molecular O—H⋯N hydrogen bonds generate two six-membered rings with S(6) motifs. In the crystal, weak inter­molecular C—H⋯O hydrogen bonds link neighbouring mol­ecules into an infinite three-dimensional network, which is further stabilized by weak C—H⋯π inter­actions.
doi:10.1107/S160053680905466X
PMCID: PMC2980204  PMID: 21580119
3.  4-({4-[1-(Methoxy­imino)eth­yl]anilino}(phen­yl)methyl­ene)-3-methyl-2-phenyl-1H-pyrazol-5(4H)-one 
In the title compound, C26H24N4O2, the dihedral angles between the central pyrazole ring and the other three benzene rings are 40.02 (3), 77.51 (5) and 55.72 (3)°. A strong intra­molecular N—H⋯O hydrogen bond forms a six-membered ring with an S(6) motif. In the crystal structure, a weak inter­molecular C—H⋯N inter­action with graph-set motif R 2 2(8) and C—H⋯O hydrogen bonds link each mol­ecule to three others, forming an infinite two-dimensional supra­molecular structure.
doi:10.1107/S1600536809048326
PMCID: PMC2971858  PMID: 21578846
4.  Bis[(E)-4-bromo-2-(methoxy­imino­meth­yl)phenolato-κ2 N,O 1]copper(II) 
In the title centrosymmetric mononuclear copper(II) complex, [Cu(C8H7BrNO2)2], the CuII atom, lying on an inversion centre, is four-coordinated in a trans-CuN2O2 square-planar geometry by two phenolate O atoms and two oxime N atoms from two symmetry-related N,O-bidentate oxime-type ligands. Inter­molecular C—H⋯O hydrogen bonds link neighbouring mol­ecules into a one-dimensional supra­molecular structure with an R 2 2(14) ring motif. This structure is further stabilized by π–π stacking inter­actions between adjacent benzene rings [centroid–centroid distance = 3.862 (1) Å].
doi:10.1107/S1600536809047989
PMCID: PMC2971867  PMID: 21578627
5.  Bis[(E)-4-bromo-2-(ethoxy­imino­meth­yl)phenolato-κ2 N,O 1]copper(II) 
The title compound, [Cu(C9H9BrNO2)2], is a centrosymmetric mononuclear copper(II) complex. The Cu atom is four-coordinated in a trans-CuN2O2 square-planar geometry by two phenolate O and two oxime N atoms from two symmetry-related N,O-bidentate (E)-4-bromo-2-(ethoxy­imino­meth­yl)phenolate oxime-type ligands. An inter­esting feature of the crystal structure is the centrosymmetric inter­molecular Cu⋯O inter­action [3.382 (1) Å], which establishes an infinite chain structure along the b axis.
doi:10.1107/S160053680904433X
PMCID: PMC2971190  PMID: 21578195
6.  2,2′-[1,1′-(Octane-1,8-diyldioxy­dinitrilo)diethyl­idyne]diphenol 
The title compound, C24H32N2O4, has a crystallographic inversion centre at the mid-point of the central C—C bond. At each end of the mol­ecule, intra­molecular O—H⋯N hydrogen bonds generate six-membered S(6) ring motifs. The crystal structure is stabilized by pairs of weak inter­molecular C—H⋯O hydrogen bonds that link neighbouring mol­ecules into R 2 2(40) ring motifs, which in turn form infinite one-dimensional supra­molecular ribbon structures.
doi:10.1107/S1600536809033959
PMCID: PMC2970437  PMID: 21577782
7.  2,2′-[1,1′-(Decane-1,10-diyldioxy­dinitrilo)diethyl­idyne]diphenol 
The salen-type bis-oxime title compound, C26H36N2O4, lies about a crystallographic inversion centre. Classical intra­molecular O—H⋯N hydrogen bonds generate two S(6) ring motifs. In the crystal structure, pairs of weak inter­molecular C—H⋯O hydrogen bonds link adjacent mol­ecules into an infinite one-dimensional supra­molecular structure.
doi:10.1107/S1600536809029341
PMCID: PMC2977177  PMID: 21583684
8.  {2,2′-[1,1′-(Ethyl­enedioxy­dinitrilo)diethyl­idyne]di-1-naphtholato}nickel(II) 
In the title complex, [Ni(C26H22N2O4)], the NiII atom has a slight distortion toward tetra­hedral geometry from a square-planar structure, coordinated by two O and two N atoms of the tetra­dentate salen-type bis­oxime 2,2′-[1,1′-(ethyl­enedioxy­dinitrilo)diethyl­idyne]di-1-naphtholate (L 2−) unit, with a mean deviation of 0.022 Å from the N2O2 plane. The N- and O-donor atoms are mutually cis. The dihedral angle between two naphthalene systems of the L 2− ligand is 67.59 (4)°. The crystal structure is stabilized by inter­molecular C—H⋯O and C—H⋯π inter­actions, which link neighbouring mol­ecules into extended chains along the b axis.
doi:10.1107/S1600536809023149
PMCID: PMC2969427  PMID: 21582728
9.  {2,2′-[1,1′-(Ethyl­enedioxy­dinitrilo)diethyl­idyne]di-1-naphtholato}copper(II) 
The title complex, [Cu(C26H22N2O4)], is isostructural with its Ni analogue. All intramolecular distances and angles are very similar for the two structures, whereas the packing of the molecules, including C—H⋯O and C—H⋯π interactions, are slightly different.
doi:10.1107/S1600536809023010
PMCID: PMC2969428  PMID: 21582727
10.  2,2′-[1,1′-(Heptane-1,7-diyldioxy­dinitrilo)diethyl­idyne]di-1-naphthol 
The mol­ecule of the title compound, C31H34N2O4, adopts an L-shaped configuration, in which the naphthalene units are approximately perpendicular, making a dihedral angle of 87.89 (3)°. Intramolecular H-bonds are formed between the OH substituents and the N atoms at each end of the molecule. In the crystal structure, each mol­ecule links six other mol­ecules into an infinite three-dimensional network supra­molecular structure, which is built from one-dimensional zigzag chains via weak C—H⋯π stacking and inter­molecular C—H⋯O hydrogen bonds.
doi:10.1107/S1600536809022727
PMCID: PMC2969467  PMID: 21582894
11.  2,2′-[1,1′-(Ethyl­enedioxy­dinitrilo)diethyl­idyne]di-1-naphthol 
The complete molecule of the title compound, C26H24N2O4, is generated by a crystallographic centre of inversion. There are two intra­molecular O—H⋯N hydrogen bonds. In the crystal structure, inter­molecular C—H⋯O hydrogen bonds result in zigzag chains.
doi:10.1107/S1600536809022508
PMCID: PMC2969397  PMID: 21582872
12.  2,2′-{1,1′-[Pentane-1,5-diylbis(oxy­nitrilo)]diethylidyne}di-1-naphthol 
The title compound, C29H30N2O4, adopts a distorted Z configuration with respect to the oxime group, which is almost coplanar with the adjacent naphthalene ring [dihedral angle = 4.11 (2)°]. There is one half-mol­ecule in the asymmetric unit, with a crystallographic twofold rotation axis passing through the central C atom of the –CH=N—O-(CH)5—O—N=CH– bridge. Within the mol­ecule, the dihedral angle formed by the two naphthalene rings is 79.08 (3)°, and there are two intra­molecular O—H⋯N hydrogen bonds.
doi:10.1107/S1600536809016584
PMCID: PMC2969628  PMID: 21583105

Results 1-12 (12)