Dibromo[N,N-dimethyl-N′-(2-pyridylmethylidene)propane-1,3-diamine]zinc(II)

2006 ◽  
Vol 62 (4) ◽  
pp. m902-m903 ◽  
Author(s):  
Yu-Liang Zhang
Keyword(s):  
Schiff Base ◽  
Schiff Base Ligand ◽  
Pyramidal Geometry ◽  
Apical Site ◽  
Square Pyramidal Geometry

In the title mononuclear zinc(II) compound, [ZnBr2(C11H17N3)], the ZnII ion is five-coordinated by three N atoms of a Schiff base ligand and by two Br− anions, forming a distorted square-pyramidal geometry with a Br atom in the apical site.

Docking studies on an N4-donor Schiff base ligand and its Cu(II) complex supported by structural, spectral and theoretical studies

2019 ◽  
Vol 43 (5-6) ◽  
pp. 170-178 ◽  
Author(s):  
Mohammad Hakimi ◽  
Sheida Ahmadi ◽  
Zahra Mardani ◽  
Fabian Mohr
Keyword(s):  
Schiff Base ◽  
Schiff Base Ligand ◽  
Copper Complex ◽  
Density Functional ◽  
Distribution Patterns ◽  
Docking Studies ◽  
Functional Theory ◽  
Pyramidal Geometry ◽  
Square Pyramidal Geometry ◽  
Orbital Analysis

A new asymmetrical Schiff base ligand, N1-(3-((pyridin-2-ylmethylene)amino)propyl)ethane-1,2-diamine, and its copper(II) complex, [Cu(PPEA)Br]Br·H2O (1), have been prepared. The copper complex has an elongated square pyramidal geometry with a CuN4Br environment. The thermodynamic stability of the compounds and their charge distribution patterns were studied by Density Functional Theory and natural bond orbital analysis. The ability of the ligand and its copper complex to interact with 10 selected biomacromolecules (BRAF kinase, CatB, DNA gyrase, HDAC7, rHA, RNR, TrxR, TS, Top II and B-DNA) was investigated by docking studies and compared with that of doxorubicin.

scholarly journals (2,2′-Bipyridine-κ2 N,N′){N-[(2-oxidonaphthalen-1-yl-κO)methylidene]-L-valinato-κO}copper(II) trihydrate

2012 ◽  
Vol 68 (6) ◽  
pp. m792-m792 ◽  
Author(s):  
Jian Zuo ◽  
Caifeng Bi ◽  
Yuhua Fan ◽  
Nan Zhang ◽  
Pengfei Zhang
Keyword(s):  
Schiff Base ◽  
Hydrogen Bonds ◽  
Schiff Base Ligand ◽  
Title Complex ◽  
Two Dimensional ◽  
Pyramidal Geometry ◽  
Dimensional Network ◽  
Bipyridine Ligand ◽  
Square Pyramidal Geometry

In the title complex, [Cu(C16H15NO3)(C10H8N2)]·3H2O, the CuII atom is five coordinated by O,N,O′-donor atoms of the Schiff base ligand and by two N atoms of the 2,2′-bipyridine ligand in a distorted square-pyramidal geometry. In the crystal, molecules are linked into a two-dimensional network parallel to (011) by O—H...O hydrogen bonds.

scholarly journals Synthesis, Characterization, Antimicrobial, DNA Cleavage, andIn VitroCytotoxic Studies of Some Metal Complexes of Schiff Base Ligand Derived from Thiazole and Quinoline Moiety

2014 ◽  
Vol 2014 ◽  
pp. 1-17 ◽  
Author(s):  
Nagesh Gunvanthrao Yernale ◽  
Mruthyunjayaswamy Bennikallu Hire Mathada
Keyword(s):  
Schiff Base ◽  
Metal Complexes ◽  
Schiff Base Ligand ◽  
Dna Cleavage ◽  
Biological Activities ◽  
Artemia Salina ◽  
Spectral Studies ◽  
Antibacterial And Antifungal Activities ◽  
Pyramidal Geometry

A novel Schiff base ligandN-(4-phenylthiazol-2yl)-2-((2-thiaxo-1,2-dihydroquinolin-3-yl)methylene)hydrazinecarboxamide(L)obtained by the condensation ofN-(4-phenylthiazol-2-yl)hydrazinecarboxamide with 2-thioxo-1,2-dihydroquinoline-3-carbaldehyde and its newly synthesized Cu(II), Co(II), Ni(II), and Zn(II) complexes have been characterized by elemental analysis and various spectral studies like FT-IR,1H NMR, ESI mass, UV-Visible, ESR, TGA/DTA, and powder X-ray diffraction studies. The Schiff base ligand(L)behaves as tridentate ONS donor and forms the complexes of type [ML(Cl)2] with square pyramidal geometry. The Schiff base ligand(L)and its metal complexes have been screenedin vitrofor their antibacterial and antifungal activities by minimum inhibitory concentration (MIC) method. The DNA cleavage activity of ligand and its metal complexes were studied using plasmid DNA pBR322 as a target molecule by gel electrophoresis method. The brine shrimp bioassay was also carried out to study thein vitrocytotoxicity properties for the ligand and its metal complexes againstArtemia salina. The results showed that the biological activities of the ligand were found to be increased on complexation.

scholarly journals Synthesis, Crystal Structure, and Characterization of Ternary Copper(II) Complex Derived from N-(salicylidene)-L-valine

2016 ◽  
Vol 2016 ◽  
pp. 1-4 ◽  
Author(s):  
Sundaramurthy Santha Lakshmi ◽  
Kannappan Geetha
Keyword(s):  
Crystal Structure ◽  
Schiff Base ◽  
Oxygen Atom ◽  
Basal Plane ◽  
Carboxylate Group ◽  
Single Crystal Xrd ◽  
Pyramidal Geometry ◽  
Imine Nitrogen ◽  
Square Pyramidal Geometry

Ternary Schiff base copper(II) complex [CuL(tmpda)] (where H2L is N-(salicylidene)-L-valine; tmpda is N,N,N′,N′-tetramethyl-1,3-propanediamine) has been characterized by UV-Vis., FTIR, and single crystal XRD. The crystal structure displays a distorted square pyramidal geometry in which Schiff base is bonded to the Cu(II) ion via phenolate oxygen, imine nitrogen, and an oxygen atom of the carboxylate group through the basal plane and the chelating diamine, N,N,N′,N′-tetramethyl-1,3-propanediamine, displays an axial and equatorial mode of binding via NN-donor atoms.

scholarly journals Oxido[2-{(E)-[((1E)-{(E)-2-[1-(2-oxidophenyl)ethylidene]hydrazin-1-ylidene}(prop-2-en-1-ylsulfanyl)methyl)imino]methyl}phenolato]vanadium(IV)

2012 ◽  
Vol 68 (8) ◽  
pp. m1033-m1034
Author(s):  
Reza Takjoo ◽  
Seik Weng Ng ◽  
Edward R. T. Tiekink
Keyword(s):  
Schiff Base ◽  
Dihedral Angle ◽  
Schiff Base Ligand ◽  
Title Complex ◽  
Coordination Geometry ◽  
Tetradentate Ligand ◽  
Π Interactions ◽  
Tetradentate Schiff Base ◽  
Apical Site ◽  
Supramolecular Chains

The VIVatom in the title complex, [V(C19H17N3O2S)O], is coordinated by two N and two O atoms of the dianionic tetradentate Schiff base ligand and the terminal oxide O atom. The N2O3donor set defines a square-pyramidal coordination geometry with the oxide O atom in the apical site. Some buckling in the tetradentate ligand is indicated by the dihedral angle of 17.92 (19)° between the six-membered chelate rings. Supramolecular chains are formed along thebaxisviaC—H...O contacts in the crystal. The chains are connected into a layer in theabplaneviaC—H...π interactions. The atoms comprising the –SCH2—CH=CH2and methyl substituents were found to be disordered in a 0.916 (2):0.088 (2) ratio. The crystal studied was found to be twinned by nonmerohedry with a 28.1 (4)% minor twin component.

scholarly journals Synthesis, physical characterization and antimicrobial activity of trivalent metal Shiff base complexes

2010 ◽  
Vol 75 (5) ◽  
pp. 629-637 ◽  
Author(s):  
Gajendra Kumar ◽  
Dharmendra Kumar ◽  
C.P. Singh ◽  
Amit Kumar ◽  
V.B. Rana
Keyword(s):  
Antimicrobial Activity ◽  
Schiff Base ◽  
Magnetic Measurements ◽  
Molar Conductance ◽  
Spectral Studies ◽  
Trivalent Metal ◽  
E Coli ◽  
Pyramidal Geometry ◽  
Shiff Base ◽  
Square Pyramidal Geometry

M(III) complexes of Cr, Mn and Fe with a Schiff base derived from 2-amino-4-ethyl-5-hydroxy benzaldehyde and thiocarbohydrazide were synthesized and characterized by several techniques, including elemental analysis (C,H,N), molar conductance measurements, magnetic measurements, and electronic, mass and IR spectral studies. Based on these studies, a fivecoordinated square pyramidal geometry for all the complexes was proposed. The Schiff base ligand and the complexes were also tested for their antimicrobial activity (against the bacteria Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa and Bacillus megaterium, and the fungi Kluyveromyces fragilis, Rhodotorula rubra, Candida albicans and Trichoderma reesei) to assess their inhibiting potential. An attempt was also made to correlate the antimicrobial activity with the geometry of the complexes. All complexes were found to be less active against the pathogens E. coli, S. aureus and P. aeruginosa. The Cr(III) complex showed the best antimicrobial activity, but the ligand alone was found to be active against the fungus T. reesei.

Aqua{2,2′-[propane-1,3-diylbis(nitrilomethylidyne)]diphenolato}zinc(II)

2006 ◽  
Vol 62 (4) ◽  
pp. m710-m711 ◽  
Author(s):  
Mamiko Odoko ◽  
Natsuko Tsuchida ◽  
Nobuo Okabe
Keyword(s):  
Schiff Base ◽  
Water Molecule ◽  
Dihedral Angle ◽  
Title Compound ◽  
Crystal Packing ◽  
Mirror Plane ◽  
Pyramidal Geometry ◽  
Weak Intermolecular Interactions ◽  
Coordinated Water ◽  
Square Pyramidal Geometry

In the title compound, [Zn(C17H16N2O2)(H2O)], the ZnII atom has a distorted pentacoordinate square-pyramidal geometry. A mirror plane passes through the ZnII atom, the central C atom of the propyl group and the O atom of the coordinated water molecule. The two planar Schiff base groups make a dihedral angle of 39.49 (6)°. The crystal packing is stabilized by weak intermolecular interactions via the coordinated water molecule.

scholarly journals Dichlorido{N′-[phenyl(pyridin-2-yl-κN)methylidene]isonicotinohydrazide-κ2N′,O}zinc

2013 ◽  
Vol 69 (2) ◽  
pp. m108-m108
Author(s):  
Adama Sy ◽  
Moussa Dieng ◽  
Ibrahima Elhadj Thiam ◽  
Mohamed Gaye ◽  
Pascal Retailleau
Keyword(s):  
Schiff Base ◽  
Hydrogen Bonds ◽  
Crystal Packing ◽  
Organic Ligand ◽  
Two Dimensional ◽  
Asymmetric Unit ◽  
Pyramidal Geometry ◽  
Dimensional Network ◽  
Square Pyramidal Geometry ◽  
Cl Atoms

The title compound, [ZnCl2(C18H14N4O)], crystallizes with two molecules in the asymmetric unit, which differ in the tautomeric (neutral and zwitterionic) forms of the coordinating organic ligand. In both molecules, the ZnIIatom adopts a distorted square–pyramidal geometry by two N and one O atoms of the Schiff base ligand and two Cl atoms acting as monodentate chloride anions. The crystal packing is stabilized by N—H...N and N—H...Cl hydrogen bonds, forming a two-dimensional network parallel to theacplane.

scholarly journals Synthesis, Physical Characterization and Biological Evaluation of Schiff BaseCr(III), Mn(III) and Fe(III) Complexes

2010 ◽  
Vol 7 (3) ◽  
pp. 813-820 ◽  
Author(s):  
Gajendra Kumar ◽  
Dharmendra Kumar ◽  
Shoma Devi ◽  
Amit Kumar ◽  
Rajeev Johari
Keyword(s):  
Escherichia Coli ◽  
Antimicrobial Activity ◽  
Schiff Base ◽  
Magnetic Measurements ◽  
Biological Evaluation ◽  
Molar Conductance ◽  
Spectral Studies ◽  
Kluyveromyces Fragilis ◽  
Pyramidal Geometry ◽  
Square Pyramidal Geometry

M(III) complexes with Cr, Mn and Fe with Schiff base derived from 2-amino-4-ethyl-5-hydroxy benzaldehyde and oxocarbohydrazide were synthesized and characterized by several techniques using elemental analysis (C, H, N), molar conductance measurements, magnetic measurements, electronic, mass and IR spectral studies. On the bases of these studies, a five coordinated square pyramidal geometry for all these complexes has been proposed and found to be potential antimicrobial agent. The Schiff base ligand and complexes were also tested for their antimicrobial activity (against the bacteriaEscherichia coli, Staphylococcus aureus, Pseudomonas aeruginosaandBacillus megateriumand the fungiKluyveromyces fragilis, Rhodotorula rubra, Candida albicansandTrichoderma reesei) to assess their inhibiting potential. An attempt is also made to correlate the antimicrobial activity with geometry of the complexes. All complexes were found to be less active against the pathogensE.coli, S.aureusandP.aeruginosa. Cr(III) complex showed the best antimicrobial activity, but ligand alone was found to be active against the fungusT.reesei.

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