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 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.

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.

Synthesis of an Unprecedented H-stitched Binuclear Crystal Structure Based on Selective Fluorescence Recognition of Zn2+ in Newly Synthesized Schiff Base Ligand with DFT and Imaging Application in Living Cells

2021 ◽  
Author(s):  
SOUMYA SUNDAR MATI ◽  
Dr. SAUGATA KONAR ◽  
BOBY SAMAI
Keyword(s):  
Crystal Structure ◽  
Schiff Base ◽  
Elemental Analysis ◽  
Schiff Base Ligand ◽  
Binuclear Complex ◽  
Living Cells ◽  
X Ray Diffraction ◽  
Schiff Base Ligands ◽  
X Ray ◽  
Imaging Application

A zinc coordinated rare binuclear complex was synthesised and characterized by elemental analysis and single-crystal X-ray diffraction. Two mononuclear units formed by two Schiff base ligands 2-((2-(pyrimidin-2-yl)hydrazono)methyl)phenol (PHP) coordinated with...

scholarly journals Synthesis, Characterization, and Crystal Structure of [Co4(CH3CO2)2L4]2[BPh4]4·0.5H2O, Where HL = 4-(Salicylaldiminato)antipyrine

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Ramadan M. El-mehdawi ◽  
Abdussalam N. EL-dewik ◽  
Mufida M. Ben-Younes ◽  
Fathia A. Treish ◽  
Ramadan G. Abuhmaiera ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Schiff Base ◽  
Single Crystal ◽  
Elemental Analysis ◽  
Schiff Base Ligand ◽  
Title Complex ◽  
Single Crystal Diffraction ◽  
X Ray ◽  
Tridentate Schiff Base

The title complex was isolated as a red solid from the reaction of 4-(salicylaldiminato)antipyrine, HL, and cobalt (II) acetate in ethanol. The complex has been characterized by elemental analysis, FTIR, UV-Vis, and X-ray single crystal diffraction. Two crystallographically different cationic units, A and B, of the title complex are found. Both units are essentially isostructural; nevertheless, small differences exist between them. Both units contain four cobalt atoms arranged at the corners of distorted cubane-like core alternatively with phenoxy oxygen of the Schiff base. In both cases, one cobalt binds to three coordinated sites from the corresponding tridentate Schiff base ligand, and the fourth one was bonded by the acetate oxygen, and the fifth and the sixth donor sites come from the phenolate oxygen of another Schiff base ligand.

scholarly journals Dichlorido(4-{[(quinolin-2-yl)methylidene]amino}phenol-κ2N,N′)mercury(II)

2014 ◽  
Vol 70 (5) ◽  
pp. m173-m173 ◽  
Author(s):  
Md. Serajul Haque Faizi ◽  
Pratik Sen
Keyword(s):  
Schiff Base ◽  
Chain Structure ◽  
Title Complex ◽  
The Other ◽  
Stacking Interactions ◽  
Coordination Geometry ◽  
Amino Phenol ◽  
A Chain ◽  
Ring Centroid ◽  
Cl Atoms

In the mononuclear title complex, [HgCl2(C16H12N2O)], synthesized from the phenolic Schiff base 4-[(quinolin-2-ylmethylidene)amino]phenol (QMAP), the coordination geometry around Hg2+is distorted tetrahedral, comprising two Cl atoms [Hg—Cl = 2.3565 (12) and 2.5219 (12) Å] and two N-atom donors from the QMAP ligand,viz.one imine and the other quinoline [Hg—N = 2.392 (2) and 2.237 (2) Å, respectively]. In the crystal, O—H...Cl hydrogen bonds generate a chain structure extending along thec-axis direction. Weak C—H...Cl and π–π stacking interactions [minimum ring centroid separation = 3.641 (3) Å] give an overall layered structure lying parallel to (001).

scholarly journals Ethyl (3-nitro-2-oxo-1,2-dihydropyridin-1-yl)acetate

2006 ◽  
Vol 62 (7) ◽  
pp. o2714-o2716 ◽  
Author(s):  
N. David Karis ◽  
Wendy A. Loughlin ◽  
Ian D. Jenkins ◽  
Peter C. Healy
Keyword(s):  
Crystal Structure ◽  
Title Compound ◽  
Van Der Waals ◽  
The Other ◽  
Van Der Waals Interactions ◽  
Asymmetric Unit ◽  
Π Interactions ◽  
Compound C ◽  
Independent Molecules

The title compound, C9H10N2O5, crystallizes with two crystallographically independent molecules in the asymmetric unit. In the crystal structure, the nitropyridone rings are connected by weak C—H...O interactions, forming sheet-like arrays, which are in turn linked by C—H...π and π–π interactions between the nitropyridone rings on one side, and by C—H...O and van der Waals interactions between the ester groups on the other.

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.

scholarly journals Crystal structure of [2-({2-[(2-azanidylbenzylidene)amino]benzylidene}amino)-4-chlorophenolato]nickel(II)

2017 ◽  
Vol 73 (4) ◽  
pp. 637-639 ◽  
Author(s):  
Fumiya Kobayashi ◽  
Atsushi Koga ◽  
Ryo Ohtani ◽  
Shinya Hayami ◽  
Masaaki Nakamura
Keyword(s):  
Schiff Base ◽  
Schiff Base Ligand ◽  
Title Complex ◽  
Coordination Geometry ◽  
Π Interactions ◽  
Bond Forming ◽  
Tetradentate Schiff Base ◽  
Centroid Distance ◽  
Square Planar ◽  
A Chain

The title complex, [Ni(C20H14ClN3O)], with an asymmetrically chloride-appended Schiff base ligand has been synthesized and structurally characterized at 100 K. In the compound, the central nickel(II) ion has a square-planar coordination geometry with N3O donors of the π-conjugated tetradentate Schiff base ligand. In the crystal, the complexes are connected into an inversion dimerviaan Ni...Ni interaction [3.1753 (5) Å] and a pair of π–π interactions [centroid–centroid distance = 3.8416 (16) Å]. The dimers are linkedviaa C—H...Cl hydrogen bond, forming a chain along thec-axis direction. The dimer chains interact with each other through π–π interactions [centroid–centroid distance = 3.8736 (16) Å], forming a layer expanding parallel to theacplane.

scholarly journals Crystal structure of (2,4-di-tert-butyl-6-{[(6,6′-dimethyl-2′-oxido-1,1′-biphenyl-2-yl)imino]methyl}phenolato-κ3O,N,O′)bis(propan-2-olato-κO)titanium(IV)

2014 ◽  
Vol 70 (9) ◽  
pp. m332-m332 ◽  
Author(s):  
Liang Chen ◽  
Huiran Wang ◽  
Xuebin Deng
Keyword(s):  
Crystal Structure ◽  
Schiff Base ◽  
Coordination Polyhedron ◽  
Schiff Base Ligand ◽  
Title Complex ◽  
Bond Lengths ◽  
Trigonal Bipyramidal ◽  
Centrosymmetric Dimers ◽  
Axial Site ◽  
Distorted Trigonal Bipyramidal

In the mononuclear TiIVtitle complex, [Ti(C29H33NO2)(C3H6O)2], the TiNO4coordination polyhedron comprises an N-atom and two O-atom donors from the dianionic Schiff base ligand and two O-atom donors from monodentate isopropoxide anions. The stereochemistry is distorted trigonal–bipyramidal with the N-donor in an elongated axial site [Ti—N = 2.2540 (17) Å], the O-donors having normal Ti—O bond lengths [1.7937 (14) Å (axial)–1.8690 (14) Å]. In the crystal, C—H...π interactions link molecules into centrosymmetric dimers.

{2-[2-(Ethylamino)ethyliminomethyl]phenol}{2-[2-(ethylamino)ethyliminomethyl]phenolato}nickel(II) perchlorate

2006 ◽  
Vol 62 (7) ◽  
pp. m1498-m1500 ◽  
Author(s):  
Zhong-Lu You ◽  
Jing-Yun Chi
Keyword(s):  
Crystal Structure ◽  
Schiff Base ◽  
Ion Pairs ◽  
Octahedral Geometry ◽  
Distorted Octahedral Geometry ◽  
Asymmetric Unit ◽  
Schiff Base Ligands ◽  
One Dimensional ◽  
Distorted Octahedral ◽  
Anions And Cations

In the title structure, [Ni(C11H15N2O)(C11H16N2O)]ClO4, there are two independent ion pairs in the asymmetric unit. In each cation, the NiII atom is six-coordinated in a slightly distorted octahedral geometry by two phenolate O atoms, two imine N atoms and two amine N atoms from two Schiff base ligands, in one of which the phenolate O atom is protonated. In the crystal structure, anions and cations are linked through intermolecular O—H...O, N—H...O and weak C—H...O hydrogen bonds, forming one-dimensional chains containing hydrogen-bonded cation dimers.

Sign in / Sign up

Export Citation Format

Share Document