scholarly journals Some Novel Manganese(III) Mixed Ligand Complexes and its Decolourization Studies

2018 ◽  
Vol 34 (6) ◽  
pp. 2867-2871
Author(s):  
Deepika Jaiswal ◽  
Sudha Yadava
Keyword(s):  
Mass Spectrometry ◽  
Mixed Ligand ◽  
Mixed Ligand Complexes ◽  
Distorted Octahedral Geometry ◽  
Ligand Field ◽  
Distorted Octahedral ◽  
Ft Ir ◽  
Ethylenediamine Ligand ◽  
Red Dye ◽  
Ligand Field Parameters

Some novel mixed ligand complexes of Mn(III) with glycine ligand namely [Mn(gly)2 Cl(en)], [Mn(gly)2 Br(en)], [Mn(gly)2 N3 (en)] and [Mn(gly)2 NCS(en)] have been synthesized starting from Mn(gly)2 Cl, Mn(gly)2 Br, Mn(gly)2N3 and Mn(gly)2 NCS respectively. These newly synthesized complexes have been characterized by UV/Vis, FT-IR and Mass spectrometry. The spectroscopic data suggest distorted octahedral geometry for all these mixed ligand complexes. The λmax values of these complexes for 5T2g → 5Eg transitions are 482 nm for [Mn(gly)2N3(en)], 488 for [Mn(gly)2NCS(en)], 486 for [Mn(gly)2 Br(en)] and 484 for [Mn(gly)2Cl(en)], all these transitions are red shifted in comparison to their parent complexes. The ligand field parameters such as 10 Dq, B and β have also been calculated and suggest covalent metal ligand bonding. One peculiar finding is that the FT-IR spectra shows frequencies for both free and coordinated NH2 group in all complexes indicating that the ethylenediamine ligand present here is non bridging in nature. The mass spectrometry results show molecular ion peaks at m/z 300, 345, 307 and 323 for [Mn(gly)2Cl(en)], [Mn(gly)2Br(en)], [Mn(gly)2N3(en)] and [Mn(gly)2NCS(en)] respectively. The coordination of ethylenediamine to Mn(III) enhances its efficiency towards decolourization methyl red dye.

scholarly journals Synthesis, Biomacromolecular Interactions, Photodynamic NO Releasing and Cellular Imaging of Two [RuCl(qn)(Lbpy)(NO)]X Complexes

Molecules ◽  
2021 ◽  
Vol 26 (9) ◽  
pp. 2545
Author(s):  
Luna Song ◽  
Hehe Bai ◽  
Chenyang Liu ◽  
Wenjun Gong ◽  
Ai Wang ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Confocal Imaging ◽  
Epr Spectra ◽  
Distorted Octahedral Geometry ◽  
Ionization Mass ◽  
Time Resolved ◽  
Pbr322 Dna ◽  
Vis Spectroscopy ◽  
No Release ◽  
Ft Ir

Two light-activated NO donors [RuCl(qn)(Lbpy)(NO)]X with 8-hydroxyquinoline (qn) and 2,2′-bipyridine derivatives (Lbpy) as co-ligands were synthesized (Lbpy1 = 4,4′-dicarboxyl-2,2′-dipyridine, X = Cl− and Lbpy2 = 4,4′-dimethoxycarbonyl-2,2′-dipyridine, X = NO3−), and characterized using ultraviolet–visible (UV-vis) spectroscopy, Fourier transform infrared (FT-IR) spectroscopy, nuclear magnetic resonance (1H NMR), elemental analysis and electrospray ionization mass spectrometry (ESI-MS) spectra. The [RuCl(qn)(Lbpy2)(NO)]NO3 complex was crystallized and exhibited distorted octahedral geometry, in which the Ru–N(O) bond length was 1.752(6) Å and the Ru–N–O angle was 177.6(6)°. Time-resolved FT-IR and electron paramagnetic resonance (EPR) spectra were used to confirm the photoactivated NO release of the complexes. The binding constant (Kb) of two complexes with human serum albumin (HSA) and DNA were quantitatively evaluated using fluorescence spectroscopy, Ru-Lbpy1 (Kb~106 with HSA and ~104 with DNA) had higher affinity than Ru-Lbpy2. The interactions between the complexes and HSA were investigated using matrix assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF-MS) and EPR spectra. HSA can be used as a carrier to facilitate the release of NO from the complexes upon photoirradiation. The confocal imaging of photo-induced NO release in living cells was successfully observed with a fluorescent NO probe. Moreover, the photocleavage of pBR322 DNA for the complexes and the effect of different Lbpy substituted groups in the complexes on their reactivity were analyzed.

Mixed-ligand copper(ii)-phenolate complexes: structure and studies on DNA/protein binding profiles, DNA cleavage, molecular docking and cytotoxicity

RSC Advances ◽  
2016 ◽  
Vol 6 (3) ◽  
pp. 1810-1825 ◽  
Author(s):  
Sellamuthu Kathiresan ◽  
Subramanian Mugesh ◽  
Maruthamuthu Murugan ◽  
Feroze Ahamed ◽  
Jamespandi Annaraj
Keyword(s):  
Mass Spectrometry ◽  
Molecular Docking ◽  
Electrospray Ionization ◽  
Elemental Analysis ◽  
Dna Cleavage ◽  
Mixed Ligand ◽  
Ionization Mass ◽  
Electrochemical Studies ◽  
Mixed Ligands ◽  
Ft Ir

Copper(ii) complexes with simple and mixed ligands, [Cu(L)(ClO4)] and [Cu(L)(diimine)]ClO4 were synthesized and characterized by elemental analysis, UV-vis, FT-IR, electrospray ionization-mass spectrometry (ESI-MS) and electrochemical studies.

scholarly journals Dichlorido(η6-p-cymene)[tris(2-cyanoethyl)phosphine]ruthenium(II)

Molbank ◽  
10.3390/m1025 ◽  
2018 ◽  
Vol 2018 (4) ◽  
pp. M1025
Author(s):  
William Henderson ◽  
Ashwin Nair ◽  
Nathan Halcovich ◽  
Edward Tiekink
Keyword(s):  
Mass Spectrometry ◽  
Negative Ions ◽  
Chloride Ion ◽  
Distorted Octahedral Geometry ◽  
X Ray ◽  
X Ray Crystallography ◽  
Mass Spectrometry Study ◽  
Ruthenium Atom ◽  
Distorted Octahedral ◽  
Esi Mass Spectrometry

The tris(2-cyanoethyl)phosphine (tcep) complex [RuCl2{P(CH2CH2CN)3}(η6-p-cymene)] (p-cymene = p-CH3C6H4iPr) was synthesised by the bridge-splitting reaction of the chlorido-dimer [RuCl2(η6-p-cymene)]2 with tcep. The complex was characterised by a single-crystal X-ray structure determination as well as NMR spectroscopy, ESI mass spectrometry, and microelemental analysis. X-ray crystallography shows the ruthenium atom is coordinated by p-cymene in a η6-fashion, two chlorides and the phosphorus atom of the tcep ligand with the donor set defining a distorted octahedral geometry. The ESI mass spectrometry study reveals that the complex readily forms negative ions [M + Cl]− and [2M + Cl]− by association with a chloride ion.

Reaction of 2-[(2-aminoethyl)amino]ethanol with pyridine-2-carbaldehyde and complexation of the products with CuII and CdII along with docking studies

2019 ◽  
Vol 75 (7) ◽  
pp. 951-959 ◽  
Author(s):  
Zahra Mardani ◽  
Mohammad Hakimi ◽  
Keyvan Moeini ◽  
Fabian Mohr
Keyword(s):  
Crystal Packing ◽  
Docking Studies ◽  
Molar Ratio ◽  
Distorted Octahedral Geometry ◽  
X Ray Diffraction ◽  
Donor Ligand ◽  
X Ray ◽  
H Nmr ◽  
Distorted Octahedral ◽  
Ft Ir

The reaction between 2-[2-(aminoethyl)amino]ethanol and pyridine-2-carbaldehyde in a 1:2 molar ratio affords a mixture containing 2-({2-[(pyridin-2-ylmethylidene)amino]ethyl}amino)ethanol (PMAE) and 2-[2-(pyridin-2-yl)oxazolidin-3-yl]-N-(pyridin-2-ylmethylidene)ethanamine (POPME). Treatment of this mixture with copper(II) chloride or cadmium(II) chloride gave trichlorido[(2-hydroxyethyl)({2-[(pyridin-2-ylmethylidene)amino]ethyl})azanium]copper(II) monohydrate, [Cu(C10H16N3O)Cl3]·H2O or [Cu(HPMAE)Cl3]·H2O, 1, and dichlorido{2-[2-(pyridin-2-yl)oxazolidin-3-yl]-N-(pyridin-2-ylmethylidene)ethanamine}cadmium(II), [CdCl2(C16H18N4O)] or [CdCl2(POPME)], 2, which were characterized by elemental analysis, FT–IR, Raman and 1H NMR spectroscopy and single-crystal X-ray diffraction. PMAE is potentially a tetradentate N3O-donor ligand but coordinates to copper here as an N2 donor. In the structure of 1, the geometry around the Cu atom is distorted square pyramidal. In 2, the Cd atom has a distorted octahedral geometry. In addition to the hydrogen bonds, there are π–π stacking interactions between the pyridine rings in the crystal packing of 1 and 2. The ability of PMAE, POPME and 1 to interact with ten selected biomolecules (BRAF kinase, CatB, DNA gyrase, HDAC7, rHA, RNR, TrxR, TS, Top II and B-DNA) was investigated by docking studies and compared with doxorubicin.

scholarly journals Aquabis(4-nitrobenzoato)-κ2O,O′;κO-(piperidinium-4-carboxylato-κ2O,O′)cadmium(II)

2009 ◽  
Vol 65 (6) ◽  
pp. m664-m665 ◽  
Author(s):  
Run-Wen Zhang ◽  
Li-Li Wang ◽  
Xiao-Jun Zhao
Keyword(s):  
Water Molecule ◽  
Three Dimensional ◽  
Chair Conformation ◽  
Octahedral Geometry ◽  
Mixed Ligand ◽  
Distorted Octahedral Geometry ◽  
Supramolecular Network ◽  
Distorted Octahedral ◽  
Coordinated Water ◽  
Mononuclear Structure

In the mixed ligand title compound, [Cd(C6H11NO2)(C7H4NO4)2(H2O)], which exhibits a discrete mononuclear structure, the CdIIatom is in a distorted octahedral geometry, surrounded by five carboxylate O atoms and one coordinated water molecule. The piperdinium ring adopts a chair conformation and the two 4-nitrobenzoate rings are oriented at a dihedral angle of 75.8 (1)°. Intermolecular O—H...O and N—H...O hydrogen bonds link the mononuclear entities into a three-dimensional supramolecular network.

scholarly journals Synthesis, Characterization and Antibacterial Activity from Mixed Ligand Complexes of 8-Hydroxyquinoline and Tributylphosphine for Some Metal Ions

2019 ◽  
Vol 70 (1) ◽  
pp. 36-40
Author(s):  
Rana Abdulilah Abbas ◽  
Amer J.jarad ◽  
Ion Marius Nafliu ◽  
Aurelia Cristina Nechifor
Keyword(s):  
Antibacterial Activity ◽  
Magnetic Susceptibility ◽  
Metal Ions ◽  
Atomic Absorption ◽  
Ethyl Alcohol ◽  
Octahedral Geometry ◽  
Mixed Ligand ◽  
Mixed Ligand Complexes ◽  
Antibacterial Efficiency ◽  
Ft Ir

Co+2, Ni+2, Cu+2 as well Zn+2 compounds mixed ligand from 8-hydroxyquinoline(8-HQ) also tributylphosphine (PBu3) have been attended at aquatic ethyl alcohol for (1:2:2) (M:8-HQ:PBu3). Produced complexes have been identified by utilizing atomic absorption flame, FT-IR as well UV-Vis spectrum manners also magnetic susceptibility as well as conductivity methods. At addendum antibacterial efficiency from the ligands as well complexes oboist three species about bacteria have been as well examined. Ligands and their complexes show good bacterial efficiencies. Of the gained datum the octahedral geometry was proposed into whole prepared complexes.

scholarly journals Mono-and Binuclear Cobalt(II) Mixed Ligand Complexes of 2,2’-Bipyridine and Ethylenediamine: Synthesis, Characterization and Biological Application

2021 ◽  
Vol 12 (2) ◽  
pp. 1962-1973
Keyword(s):  
Antibacterial Activities ◽  
Spectroscopic Technique ◽  
Mixed Ligand ◽  
Mixed Ligand Complexes ◽  
Diffusion Method ◽  
E Coli ◽  
Precursor Complex ◽  
Chloride Determination ◽  
Ft Ir ◽  
Physicochemical Methods

Antibiotic resistance of pathogens to the current commercially available drugs is a serious problem. To curve this problem, the discovery of active compounds with a new mode of action is insistent. In line with this, we report two new complexes; mononuclear [Co(L1)2(L2)(H2O)]Cl2 and binuclear [Co2(L1)4(L2)(H2O)2]Cl4 using precursor complex, [Co(L1)2(H2O)2]Cl2, synthesized before; where L1: 2,2’-bipyridine and L2: ethylenediamine. The precursor complex was prepared from CoCl2.6H2O and L1 in ethanol, treated with a different mole of L2 under optimized reaction conditions to give the corresponding mono-and binuclear cobalt(II) mixed ligand complexes. These complexes were characterized using the spectroscopic technique (ICP-OES, UV-Vis, FT-IR) and physicochemical methods (chloride determination, thermal analysis, and conductance measurement). Their antibacterial activities were also tested against two Gram-negative (Escherichia coli (E. coli) and Klebsiella pneumoniae (K. pneumoniae)) and two Gram-positive (Staphylococcus aureus (S. aureus), Streptococcus pyogenes (S. pyogenes)) bacteria using the disc diffusion method. The new complexes showed better activities against K. pneumoniae than the reference Gentamycin. Furthermore, [Co(L1)2(L2)(H2O)]Cl2 demonstrated better activity than Gentamycin against S. aureus and E. coli.

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