scholarly journals Synthesis, Spectroscopic Studies and Antifungal Activity of 2-[(4(3-Chlorophenyl) piperazine-1-yl)methyl]-3-[8-hydroxy quinolin-5-yl]-3(H)-quinazolin-4-one Ligand and its Chelates

2010 ◽  
Vol 7 (s1) ◽  
pp. S163-S168 ◽  
Author(s):  
R. T. Vashi ◽  
C. D. Shelat ◽  
Himanshu Patel
Keyword(s):  
Antifungal Activity ◽  
Spectroscopic Studies ◽  
Metal Chelates ◽  
Octahedral Geometry ◽  
Distorted Octahedral Geometry ◽  
Tetrahedral Geometry ◽  
Transition Metal Chelates ◽  
Distorted Octahedral ◽  
Ft Ir ◽  
Physicochemical Methods

The novel ligand HL6was synthesized using anthranilic acid and it was undergo the chelating reaction with Cu(II), Ni(II), Co(II), Mn(II) and Zn(II) to prepare transition metal chelates. These chelates were characterized by physicochemical methods such as elemental analysis, conductometric studies, magnetic susceptibility, FT-IR, NMR and electronic spectra. The stoichiometry of the complexes has been found to be 1: 2 (Metal: ligand). An octahedral geometry around Co(II), Ni(II) and Mn(II), distorted octahedral geometry around Cu(II) and tetrahedral geometry around Zn(II) have been proposed. The antifungal activity of ligand and its metal chelates were conducted against various fungi.

scholarly journals Synthesis, Characterization and Antifungal Activity of Novel Quinazolin-4-one Derivatives Containing 8-Hydroxyquinazoline Ligand and its Various Metal Complexes

2009 ◽  
Vol 6 (s1) ◽  
pp. S445-S451
Author(s):  
R. T. Vashi ◽  
S. B. Patel
Keyword(s):  
Antifungal Activity ◽  
Elemental Analysis ◽  
Octahedral Geometry ◽  
Spectral Studies ◽  
Distorted Octahedral Geometry ◽  
Hydroxyl Groups ◽  
Tetrahedral Geometry ◽  
Distorted Octahedral ◽  
Metal Ligand ◽  
Methyl Phenyl

Novel ligands containing quinazoline-4-one-8-hydroxyquinoline (QQ) merged moieties were prepared and characterized. For this anthranilic acid and 5-bromoanthranilic acid were converted respectively into 2-chloromethyl–3-(4-methyl phenyl)-3(H)-quinazoline-4-one and 2-chloromethyl–3-(methyl phenyl)-6-bromo-3(H)-quinazoline-4-one. Both these compounds were condensed with 5-amino-8-hydroxyquinoline. The so called resulted compounds were named respectively as 2-[(8-hydroxy-quinolinyl) –5- amino methyl] -3-(4-methylphenyl)- 3(H)- quinazoline -4- one and 2-[(8-hydroxyquinolinyl)-5-aminomethyl] -3(methyl phenyl)-6-bromo-3(H)-quinazoline-4-one. Both the compounds were designated respectively as HL1and HL2ligands. The transition metal (Cu2+, Ni2+, Zn2+, Mn2+and Co2+) complexes of both these ligands were prepared. The ligands and their complexes as case may be were characterized by elemental analysis, spectral studies and number of hydroxyl groups. The stoichiometry of the complexes has been found to be 1:2 (metal: ligand). An octahedral geometry around Co2+, Ni2+and Mn2+, distorted octahedral geometry around Cu2+and tetrahedral geometry of around Zn2+have been proposed. These complexes also been tested for their antifungal activities.

scholarly journals Bis[tetrakis(pyridin-2-yl)methane-κ3N,N′,N′′]cobalt(II) tetrakis(thiocyanato-κN)cobaltate(II) methanol monosolvate

2014 ◽  
Vol 70 (3) ◽  
pp. m96-m97 ◽  
Author(s):  
Yuya Tsunezumi ◽  
Kouzou Matsumoto ◽  
Shinya Hayami ◽  
Akira Fuyuhiro ◽  
Satoshi Kawata
Keyword(s):  
Complex Anion ◽  
Complex Cation ◽  
Solvent Molecule ◽  
Octahedral Geometry ◽  
Title Complex ◽  
Distorted Octahedral Geometry ◽  
Weak Hydrogen Bond ◽  
Tetrahedral Geometry ◽  
Distorted Tetrahedral Geometry ◽  
Distorted Octahedral

The title complex, [Co(C21H16N4)2][Co(NCS)4]·CH3OH, consists of one [Co{C(py)4}2]2+complex cation [C(py)4= tetrakis(pyridin-2-yl)methane], one [Co(NCS)4]2−complex anion and a methanol solvent molecule. In the cation, the CoIIatom is coordinated by six N atoms of two C(py)4ligands in a distorted octahedral geometry. In the anion, the CoIIatom is coordinated by the N atoms of four NCS−ligands in a distorted tetrahedral geometry. The methanol molecule is disordered and was modelled over three orientations (occupancies 0.8:0.1:0.1). There are two weak hydrogen-bond-like interactions between the methanol solvent molecule and NCS−ligands of the anion [O...S = 3.283 (3) and 3.170 (2) Å].

scholarly journals Bis[trans-difluoridotetrakis(pyridine-κN)chromium(III)] sodium tetrachloridozincate perchlorate from synchrotron data

2014 ◽  
Vol 70 (7) ◽  
pp. m280-m280 ◽  
Author(s):  
Dohyun Moon ◽  
Keon Sang Ryoo ◽  
Jong-Ha Choi
Keyword(s):  
Hydrogen Bonds ◽  
Crystal Packing ◽  
Octahedral Geometry ◽  
Distorted Octahedral Geometry ◽  
Tetrahedral Geometry ◽  
Bond Lengths ◽  
Distorted Tetrahedral Geometry ◽  
Distorted Octahedral ◽  
The Mean ◽  
Supramolecular Chains

The title salt, Na[CrF2(C5H5N)4]2[ZnCl4]ClO4, consists of two cationic CrIIIcomplexes, an Na+cation, one [ZnCl4]2−anion and one ClO4−anion. The CrIIIatoms are coordinated by four pyridine (py) N atoms and two F atoms in atransarrangement, displaying a distorted octahedral geometry. The mean Cr—N(py) and Cr—F bond lengths are 2.086 (8) and 1.864 (14) Å, respectively. The [ZnCl4]2−anion has a distorted tetrahedral geometry. The most notable feature of the crystal packing is the formation of weak pyridine–perchlorate C—H...O hydrogen bonds, resulting in supramolecular chains along theb-axis direction. The perchlorate anion was disordered over two sets of sites in a 0.868 (3):0.132 (3) ratio.

scholarly journals Crystal structure of bis[trans-(ethane-1,2-diamine-κ2N,N′)bis(thiocyanato-κN)chromium(III)] tetrachloridozincate from synchrotron data

2015 ◽  
Vol 71 (1) ◽  
pp. 100-103 ◽  
Author(s):  
Dohyun Moon ◽  
Jong-Ha Choi
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Octahedral Geometry ◽  
Distorted Octahedral Geometry ◽  
Inversion Symmetry ◽  
Asymmetric Unit ◽  
Intermolecular Hydrogen Bonds ◽  
Tetrahedral Geometry ◽  
Distorted Tetrahedral Geometry ◽  
Distorted Octahedral

The structure of the title compound, [Cr(NCS)2(C2H8N2)2]2[ZnCl4], has been determined from synchrotron data. In the asymmetric unit, there are four independent halves of the CrIIIcomplex cations, each of which lies on an inversion centre, and one tetrachloridozincate anion in a general position. The CrIIIatoms are coordinated by the four N atoms of two ethane-1,2-diamine (en) ligands in the equatorial plane and two N-bound NCS−anions in atransarrangement, displaying a slightly distorted octahedral geometry with crystallographic inversion symmetry. The Cr—N(en) and Cr—N(NCS) bond lengths range from 2.0653 (10) to 2.0837 (10) Å and from 1.9811 (10) to 1.9890 (10) Å, respectively. The five-membered metalla-rings are in stablegaucheconformations. The [ZnCl4]2−anion has a distorted tetrahedral geometry. The crystal structure is stabilized by intermolecular hydrogen bonds involving the en NH2or CH2groups as donors and chloride ligands of the anion and S atoms of NCS−ligands as acceptors.

Structural and spectral study of coordination of 4,4′-dimethoxy-2,2′-bipyridine toward Zn(II) and Cd(II) containing thiocyanato or azido ligands

2016 ◽  
Vol 71 (9) ◽  
pp. 959-965 ◽  
Author(s):  
Farzin Marandi ◽  
Keyvan Moeini ◽  
Hadi Amiri Rudbari
Keyword(s):  
Crystal Structure ◽  
Nmr Spectroscopy ◽  
Octahedral Geometry ◽  
Distorted Octahedral Geometry ◽  
X Ray ◽  
X Ray Crystallography ◽  
Distorted Octahedral ◽  
Ft Ir ◽  
New Compounds ◽  
C Nmr

AbstractThree new compounds of zinc(II) and cadmium(II) with the ligand 4,4′-dimethoxy-2,2′-bipyridine (4,4′-dmo-2,2′-bpy), including cis-[Zn(4,4′-dmo-2,2′-bpy)2(SCN)2] (1), cis-[Cd(4,4′-dmo-2,2′-bpy)2(SCN)2] (2), and [Cd3(4,4′-dmo-2,2′-bpy)3(N3)5(OAc)]n (3), have been obtained as white single crystals by the branched tube method and characterized by elemental analysis, FT-IR and 1H, 13C NMR spectroscopy, and X-ray crystallography. Single-crystal structure analyses of the isostructural complexes 1 and 2 showed distorted octahedral geometry for zinc(II) and cadmium(II) with ZnN6 and CdN6 environments. Complex 3 reveals a rare coordination polymer containing octahedrally coordinated cadmium(II) expanding to chains by two different bridging modes, including Cd‒O‒C‒O‒Cd and Cd‒N‒Cd.

scholarly journals Tris(ethylenediamine-κ2N,N′)nickel(II) bis(dimethyl phosphate)

2012 ◽  
Vol 68 (8) ◽  
pp. m1032-m1032 ◽  
Author(s):  
Masoud Rafizadeh ◽  
Hamid Reza Saadati Moshtaghin ◽  
Vahid Amani
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
Octahedral Geometry ◽  
Distorted Octahedral Geometry ◽  
Tetrahedral Geometry ◽  
Distorted Tetrahedral Geometry ◽  
Dimethyl Phosphate ◽  
Dimensional Network ◽  
Distorted Octahedral

In the title compound, [Ni(C2H8N2)3][O2P(OCH3)2]2, the NiIIatom is six-coordinated in a distorted octahedral geometry by six N atoms from three ethylenediamine ligands. The P atoms of the anions adopt a distorted tetrahedral geometry. In the crystal, intermolecular N—H...O and C—H...O hydrogen bonds link the cations and anions into a three-dimensional network.

scholarly journals Crystal structure of di-μ-chloroacetato-hexakis(dimethylformamide)tetrakis(μ-N,2-dioxidobenzene-1-carboximidato)tetramanganese(III)disodium dimethylformamide disolvate

2014 ◽  
Vol 70 (12) ◽  
pp. 494-498 ◽  
Author(s):  
Connor I. Daly ◽  
Matthias Zeller ◽  
Curtis M. Zaleski
Keyword(s):  
Crystal Structure ◽  
Repeat Unit ◽  
Solvent Molecule ◽  
Octahedral Geometry ◽  
Distorted Octahedral Geometry ◽  
Central Cavity ◽  
Pyramidal Geometry ◽  
Distorted Octahedral ◽  
Ft Ir ◽  
Square Pyramidal Geometry

The synthesis, crystal structure, and FT–IR data for the title compound, [Na2Mn4(C2H2ClO2)2(C7H4NO3)4(C3H7NO)6]·2C3H7NO or Na2(O2CCH2Cl)2[12-MCMnIIIN(shi)-4](DMF)6·2DMF, where MC is metallacrown, shi3−is salicylhydroximate, and DMF isN,N-dimethylformamide, is reported. The macrocyclic metallacrown consists of an –[MnIII—N—O]4– ring repeat unit and the metallacrown captures two Na+ions in the central cavity above and below the plane of the metallacrown. Each Na+ion is seven-coordinate and is bridged to two ring MnIIIions, through either a coordinating DMF molecule or a chloroacetate anion. The ring MnIIIions have either a tetragonally distorted octahedral geometry or a distorted square-pyramidal geometry. Weak C—H...O interactions, in addition to pure van der Waals forces, contribute to the overall packing of the molecules. The complete molecule has inversion symmetry and is disordered over two sets of sites with an occupancy ratio of 0.8783 (7):0.1217 (7). The solvent molecule is also disordered over two sets of sites, with an occupancy ratio of 0.615 (5):0.385 (5).

scholarly journals 2-Amino-5-chloropyridinium cis-diaquadioxalatochromate(III) sesquihydrate

2012 ◽  
Vol 68 (6) ◽  
pp. m824-m825 ◽  
Author(s):  
Ichraf Chérif ◽  
Jawher Abdelhak ◽  
Mohamed Faouzi Zid ◽  
Ahmed Driss
Keyword(s):  
Rotation Axis ◽  
Three Dimensional ◽  
Octahedral Geometry ◽  
Distorted Octahedral Geometry ◽  
Water Molecules ◽  
Lattice Water ◽  
Compound C ◽  
Hydrogen Bonding Interactions ◽  
Distorted Octahedral ◽  
Independent Lattice

In the crystal structure of the title compound, (C5H6ClN2)[Cr(C2O4)2(H2O)2]·1.5H2O, the CrIII atom adopts a distorted octahedral geometry being coordinated by two O atoms of two cis water molecules and four O atoms from two chelating oxalate dianions. The cis-diaquadioxalatochromate(III) anions, 2-amino-5-chloropyridinium cations and uncoordinated water molecules are linked into a three-dimensional supramolecular array by O—H...O and N—H...O hydrogen-bonding interactions. One of the two independent lattice water molecules is situated on a twofold rotation axis.

Synthesis, Characterisation and Structural Studies of [Zn(phen)3][Fe(CN)5(NO)]·2H2O·0.25MeOH and [(bipy)2(H2O)Zn(μ-NC)Fe(CN)4(NO)]·0.5H2O

2003 ◽  
Vol 58 (9) ◽  
pp. 916-921 ◽  
Author(s):  
Amitabha Datta ◽  
Samiran Mitra ◽  
Georgina Rosair
Keyword(s):  
Infrared Spectroscopy ◽  
Thermogravimetric Analysis ◽  
Octahedral Geometry ◽  
Distorted Octahedral Geometry ◽  
Structural Studies ◽  
Crystal Lattices ◽  
X Ray ◽  
X Ray Crystallography ◽  
Distorted Octahedral ◽  
Solvent Molecules

Two new bimetallic complexes [Zn(phen)3][Fe(CN)5(NO)] · 2 H2O · 0.25 MeOH, (1) and [(bipy)2(H2O)Zn(μ-NC)Fe(CN)4(NO)] · 0.5 H2O, (2), have been isolated (where phen = 1,10-phenanthroline and bipy = bipyridyl) and characterised by X-ray crystallography [as the 2 H2O · 0.25 CH3OH solvate for (1) and hemihydrate for (2)] infrared spectroscopy and thermogravimetric analysis. Substitution of phenanthroline for bipyridyl resulted in a cyano-bridged bimetallic species rather than two discrete mononuclear metal complexes. The bond angles of Fe-N-O were shown to be practically linear for both 1 [179.2(7)°] and 2 [178.3(3)°], and the Zn atoms have distorted octahedral geometry. The solvent molecules in both crystal lattices take part in forming hydrogen-bonded networks.

Structure cristalline et moléculaire du cis-dithiocyanatobis(phénanthroline-1,10)mercure(II), Hg(SCN)2(C12H8N2)2

1974 ◽  
Vol 52 (16) ◽  
pp. 2923-2927 ◽  
Author(s):  
André L. Beauchamp ◽  
Bernard Saperas ◽  
Roland Rivest
Keyword(s):  
Heavy Atom ◽  
Octahedral Geometry ◽  
Van Der Waals Interactions ◽  
Distorted Octahedral Geometry ◽  
Triclinic Space Group ◽  
Bond Lengths ◽  
R Factor ◽  
Distorted Octahedral ◽  
Phenanthroline Ligands ◽  
Heavy Atom Method

The compound cis-Hg(SCN)2(Phen)2 belongs to the triclinic space group [Formula: see text] with a = 13.252(5), b = 11.077(4), c = 8.443(3) Å, α = 105.20(3), β = 83.25 (3), γ = 90.92(3)°, and Z = 2. The structure was solved by the heavy atom method and refined on 1718 independent reflections to an R factor of 0.069. The crystal contains discrete molecules, in which mercury is coordinated to four nitrogen atoms from two phenanthroline molecules and to two sulfur atoms from thiocyanate groups. These donor atoms define a distorted octahedral geometry around mercury. The Hg—N bond lengths are in the range 2.42(2)–2.52(2) Å, whereas the Hg—S bonds are equal to 2.622(8) and 2.582(8) Å. The molecules are packed in layers parallel to the (110) planes and the layers are held together by normal van der Waals interactions. Within the layers, the packing of the complex is characterized by parallel stacking of phenanthroline ligands at distances of ∼3.4 Å. The terminal nitrogen atoms of the thiocyanate groups are uncoordinated.

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