Azido{4-bromo-2-[(2-diethylaminoethylimino)methyl]phenolato}nickel(II)

2006 ◽  
Vol 62 (4) ◽  
pp. m851-m853 ◽  
Author(s):  
Zhong-Lu You ◽  
Xiao Han ◽  
Jia Wang ◽  
Shu-Yun Niu
Keyword(s):  
Crystal Structure ◽  
Schiff Base ◽  
Schiff Base Ligand ◽  
Asymmetric Unit ◽  
Azide Anion ◽  
Square Planar

The title mononuclear nickel(II) complex, [Ni(C13H18BrN2O)N3], contains two molecules in the asymmetric unit. Each NiII atom is four-coordinated by one phenolate O atom, one imine N atom and one amine N atom from a Schiff base ligand, and by one terminal N atom of an azide anion, forming a square-planar coordination. In the crystal structure, adjacent molecules are linked through C—H...N interactions, forming chains along the a axis.

{1-[2-(Methylamino)ethyliminomethyl]naphthalen-2-olato}thiocyanatocopper(II)

2006 ◽  
Vol 62 (7) ◽  
pp. m1533-m1534 ◽  
Author(s):  
Han-Na Hou
Keyword(s):  
Schiff Base ◽  
Schiff Base Ligand ◽  
Title Compound ◽  
Planar Geometry ◽  
Asymmetric Unit ◽  
Thiocyanate Anion ◽  
Square Planar

The title compound, [Cu(C14H15N2O)(NCS)], is a mononuclear copper(II) complex, with two molecules in the asymmetric unit. The CuII ion is coordinated by one O and two N atoms of a Schiff base ligand, and by one N atom of a thiocyanate anion, forming a square-planar geometry.

scholarly journals Crystal structure of bis(2-{1-[(E)-(4-fluorobenzyl)imino]ethyl}phenolato-κ2N,O)palladium(II)

2015 ◽  
Vol 71 (4) ◽  
pp. 350-353
Author(s):  
Amalina Mohd Tajuddin ◽  
Hadariah Bahron ◽  
Hamizah Mohd Zaki ◽  
Karimah Kassim ◽  
Suchada Chantrapromma
Keyword(s):  
Crystal Structure ◽  
Schiff Base ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Complex ◽  
Asymmetric Unit ◽  
Schiff Base Ligands ◽  
Bond Lengths ◽  
Square Planar ◽  
Coordination Plane

The asymmetric unit of the title complex, [Pd(C15H13FNO)2], contains one half of the molecule with the PdIIcation lying on an inversion centre and is coordinated by the bidentate Schiff base anion. The geometry around the cationic PdIIcentre is distorted square planar, chelated by the imine N- and phenolate O-donor atoms of the two Schiff base ligands. The N- and O-donor atoms of the two ligands are mutuallytrans, with Pd—N and Pd—O bond lengths of 2.028 (2) and 1.9770 (18) Å, respectively. The fluorophenyl ring is tilted away from the coordination plane and makes a dihedral angle of 66.2 (2)° with the phenolate ring. In the crystal, molecules are linked into chains along the [101] direction by weak C—H...O hydrogen bonds. Weak π–π interactions with centroid–centroid distances of 4.079 (2) Å stack the molecules alongc.

Platinum(II) complex with 4-nitro-N-(pyridin-2-ylmethylidene)aniline: synthesis, characterization, crystal structure and antioxidant activity

2020 ◽  
Vol 76 (11) ◽  
pp. 1005-1009
Author(s):  
Mehdi Khalaj ◽  
Abolfazl Olyaei ◽  
Mahdieh Sadeghpour ◽  
Arash Lalegani ◽  
Janusz Lipkowski ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Antioxidant Activity ◽  
Schiff Base ◽  
Schiff Base Ligand ◽  
Chain Structure ◽  
X Ray Diffraction ◽  
X Ray ◽  
Square Planar ◽  
Dpph Method ◽  
Bidentate Schiff Base Ligand

A novel complex has been prepared using the (E)-4-nitro-N-(pyridin-2-ylmethylidene)aniline bidentate Schiff base ligand and PtCl2, namely, dichlorido[(E)-4-nitro-N-(pyridin-2-ylmethylidene)aniline-κ2 N,N′]platinum(II) acetonitrile hemisolvate, [PtCl2(C12H9N3O2)]·0.5CH3CN, 1. According to the X-ray measurements of the crystal structure, the PtII ion adopts a PtCl2N2 square-planar coordination. The coordination of the Schiff base ligand to the PtII ion occurs in a cyclic bidentate fashion, as a result of which a five-membered metallacycle is formed. Furthermore, in the structure of 1, the neutral molecules form a one-dimensional chain structure through C—H...Cl and C—H...O hydrogen bonds. The characterization of the complex was performed via single-crystal X-ray diffraction, IR spectroscopy and elemental analysis, and the antioxidant activity of the complex was evaluated using spectrophotometry by the 1,1-diphenyl-2-picrylhydrazyl (DPPH) method.

Azido{1-[(2-diethylaminoethylimino)methyl]naphthalato}copper(II)

2006 ◽  
Vol 62 (4) ◽  
pp. m849-m850 ◽  
Author(s):  
Xiao-Yang Qiu
Keyword(s):  
Schiff Base ◽  
Schiff Base Ligand ◽  
Title Compound ◽  
Coordination Geometry ◽  
Azide Anion ◽  
Square Planar

The title compound, [Cu(C17H21N2O)(N3)], is a mononuclear copper(II) complex. The central CuII ion is four-coordinated by one O and two N atoms of the Schiff base ligand, and by one N atom of an azide anion, forming a distorted square-planar coordination geometry.

scholarly journals Crystal structure of di-μ-acetato-diacetatobis(μ-6,6′-dimethoxy-2,2′-{[(propane-1,3-diylbis(azanylylidene)]bis(methanylylidene)}diphenolato)tetrazinc

2015 ◽  
Vol 71 (12) ◽  
pp. m217-m218
Author(s):  
Xue Cai ◽  
Hui Ning
Keyword(s):  
Crystal Structure ◽  
Schiff Base ◽  
Schiff Base Ligand ◽  
Title Complex ◽  
The Other ◽  
Van Der Waals Interactions ◽  
Axial Position ◽  
Asymmetric Unit ◽  
Schiff Base Ligands ◽  
A Chain

The tetranuclear title complex, [Zn4(C19H20N2O4)2(CH3COO)4], is formed from two dinuclear motifs related by an inversion centre. The two crystallographically independent ZnIIions in the asymmetric unit are in different coordination environments. One is square-based pyramidal with one O atom of an acetate group occupying the axial position and two N and O atoms of one bmspd [H2bmspd =N,N′-bis(3-methoxysalicylidene)propylene-1,3-diamine] Schiff base ligand forming the basal plane. The other ZnIIatom is six-coordinated by four O atoms of the bmspd ligand forming the equatoral plane and two O atoms of different acetate groups located in the axial positions. As a result, the two phenolic planes of the bicompartmental Schiff base ligand are distorted slightly. However, the planes of the two Schiff base ligands are parallel. In addition, the Zn—N and Zn—O bond lengths span the reasonable ranges 2.062 (2)–2.073 (2) and 1.9261 (15)–2.4356 (16) Å, respectively. The Zn...Zn distances separated by phenolic O atoms are 3.2466 (4) Å while the Zn...Zn distances bridged by acetate groups are 5.9835 (6) Å. The tetranuclear moieties are connected by van der Waals interactions, and form a chain alongcaxis.

scholarly journals Synthesis and characterization of mixed nickel thiosemicarbazone complexes

2014 ◽  
Vol 8 (3) ◽  
Author(s):  
Hana Bashir Shawish ◽  
Mohd Jamil Maah ◽  
Siti Nadia Abdul Halim
Keyword(s):  
Crystal Structure ◽  
Schiff Base ◽  
Ir Spectroscopy ◽  
Schiff Base Ligand ◽  
Synthesis And Characterization ◽  
Planar Geometry ◽  
Mixed Ligands ◽  
Square Planar ◽  
Thiosemicarbazone Complexes

Three nickel thiosemicarbazone mixed ligands complexes have been synthesized. Complexes with the formula [NiL(PPh3)]Cl, [Ni2L2(Phen)],[Ni2L2(Bpy)] (where L= 2,3,4-trihydroxybenzaldehydethiosemicarbazone, PPh3=Triphenylphosphine, Phen=1,10-phenanthroline, Bpy= 2,2 –Bipyridine)have been characterized by IR spectroscopy, as well as elemental analysis. The structure of [NiL (PPh3)]Cl has been determined by X-raycrystallography. The crystal structure of this complex shows that the Schiff base ligand functions as an N,O,S chelating anion to the phosphine –coordinated nickel(II) atom, which exists as a distorted square – planar geometry.

scholarly journals {4,4′,6,6′-Tetrabromo-2,2′-[(2,2-dimethylpropane-1,3-diyl)bis(nitrilomethanylylidene)]diphenolato}copper(II)

2012 ◽  
Vol 68 (4) ◽  
pp. m392-m392
Author(s):  
Hadi Kargar ◽  
Reza Kia ◽  
Mahbubeh Haghshenas ◽  
Muhammad Nawaz Tahir
Keyword(s):  
Crystal Structure ◽  
Schiff Base ◽  
Dihedral Angle ◽  
Schiff Base Ligand ◽  
Title Compound ◽  
Rotation Axis ◽  
Centroid Distance ◽  
Square Planar ◽  
Benzene Rings

In the title compound, [Cu(C19H16Br4N2O2)], the CuIIion and the substituted C atom of the diamine fragment lie on a crystallographic twofold rotation axis. The geometry around the CuIIion is distorted square-planar, which is defined by the N2O2donor atoms of the coordinated Schiff base ligand. The dihedral angle between the symmetry-related substituted benzene rings is 25.33 (14)°. The crystal structure is stabilized by an intermolecular π–π interaction [centroid–centroid distance = 3.8891 (18) Å].

scholarly journals Crystal structure of bis{2-[(E)-(4-fluorobenzyl)iminomethyl]phenolato-κ2N,O}nickel(II)

2014 ◽  
Vol 70 (10) ◽  
pp. 252-255 ◽  
Author(s):  
Amalina Mohd Tajuddin ◽  
Hadariah Bahron ◽  
Rohazila Mohammad Hanafiah ◽  
Nazlina Ibrahim ◽  
Hoong-Kun Fun ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Schiff Base ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Complex ◽  
Asymmetric Unit ◽  
Schiff Base Ligands ◽  
Coordination Environment ◽  
Square Planar ◽  
Coordination Plane

The asymmetric unit of the title complex, [Ni(C14H11FNO)2], contains one-half of the molecule with the NiIIcation lying on an inversion centre coordinated by a bidentate Schiff base anion. The cationic NiIIcenter is in a distorted square-planar coordination environment chelated by the imine N and phenolate O donor atoms of the two Schiff base ligands. The N and O donor atoms of the two ligands are mutuallytranswith Ni—N and Ni—O bond lengths of 1.9242 (10) and 1.8336 (9) Å, respectively. The fluorophenyl ring is almost orthogonal to the coordination plane and makes a dihedral angle of 82.98 (7)° with the phenolate ring. In the crystal, molecules are linked into screw chains by weak C—H...F hydrogen bonds. Additional C—H...π contacts arrange the molecules into sheets parallel to theacplane.

scholarly journals Crystal structure of {6,6′-dibenzoyl-4,4′-di-tert-butyl-2,2′-[(ethane-1,2-diyl)dinitrilobis(phenylmethanylylidene)]diphenolato-κ4O1,N,N′,O1′}nickel(II)

2015 ◽  
Vol 71 (12) ◽  
pp. 1485-1487
Author(s):  
Abhishek K. Gupta ◽  
Ray J. Butcher ◽  
Anjan Sil
Keyword(s):  
Crystal Structure ◽  
Schiff Base ◽  
Title Complex ◽  
Dihedral Angles ◽  
Planar Geometry ◽  
Asymmetric Unit ◽  
Triclinic Space Group ◽  
Tetradentate Schiff Base ◽  
Square Planar ◽  
Phenyl Rings

The mononuclear title complex, [Ni(C50H46N2O4)], crystallizes in the triclinic space groupP-1, with two molecules in the asymmetric unit (Z′ = 2). Each NiIIatom has a slightly distorted square-planar geometry [ω = 3.91 (5)° and 2.04 (7)°] defined by the two phenolate O and two imine N atoms of the tetradentate Schiff base ligand. The dihedral angles between the central phenolate ring and peripheral phenyl rings are 60.5 (2)/70.0 (2) and 86.4 (2)/56.1 (2)° in moleculeA, and 89.43 (19)/18.0 (2) and 63.87 (19)/68.2 (2)° in moleculeB. The two central phenolate rings are twisted by angles of 19.37 (19) and 19.36 (18)° in the two molecules. The packing is stabilized through intra- and intermolecular C—H...O and C—H...π interactions, forming chains parallel to thebaxis. Thetert-butyl groups in one of the two molecules are positionally disordered with a refined occupancy ratio of 0.707 (13):0.293 (13).

scholarly journals Formation of a macrocycle from dichlorodimethylsilane and a pyridoxalimine Schiff base ligand

2021 ◽  
Vol 77 (11) ◽  
Author(s):  
Uwe Böhme ◽  
Anke Schwarzer ◽  
Betty Günther
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Schiff Base ◽  
Nitrogen Atom ◽  
Oxygen Atom ◽  
Schiff Base Ligand ◽  
Silicon Compound ◽  
Asymmetric Unit ◽  
Imine Nitrogen ◽  
Imine Nitrogen Atom

The reaction of dichlorodimethylsilane with a polydentate Schiff base ligand derived from pyridoxal and 2-ethanolamine yielded the macrocyclic silicon compound (8E,22E)-4,4,12,18,18,26-hexamethyl-3,5,17,19-tetraoxa-8,13,22,27-tetraaza-4,18-disilatricyclo[22.4.0.010,15]octacosa-1(24),8,10,12,14,22,25,27-octaene-11,25-diol, C24H36N4O6Si2. The asymmetric unit contains the half macrocycle with an intramolecular O—H...N hydrogen bond between the imine nitrogen atom and a neighbouring oxygen atom. The crystal structure is dominated by C—H...O and C—H...π interactions, which form a high ordered molecular network.

Sign in / Sign up

Export Citation Format

Share Document