The Stereochemistry of Bis‐Chelate Metal(II) Complexes

Holm, R. H.; O'connor, M. J.

doi:10.1002/9780470166154.ch5

Cited by 221 publications

(28 citation statements)

References 499 publications

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“…The spectrophotometric analysis (Table 4) revealed 1:1 (metal-ligand) stoichiometry in the complex compound, which is common feature in the first row transition metals (Holm and O'Connon, 1971;Mahaptra et al, 1977). Therefore, from the analyses carried out in this work, the proposed general molecular structure of nickel (II) Schiff base complex is as presented below;…”

Section: Resultsmentioning

confidence: 99%

Sythesis, characterization and antibacterial properties of nickel (ii) Schiff base complex derived from benzoin and oamino benzoic acid

Muhammad¹,

Shedewo²

2015

Bayero J. Pure App. Sci.

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Section: Resultsmentioning

confidence: 99%

Sythesis, characterization and antibacterial properties of nickel (ii) Schiff base complex derived from benzoin and oamino benzoic acid

Muhammad¹,

Shedewo²

2015

Bayero J. Pure App. Sci.

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“…[1][2][3][4][5][6] During the last few years they have gained a renewed interest to study their transition metal complexes as building blocks e.g. for conducting or magnetic materials.…”

Section: Introductionmentioning

confidence: 99%

Bis(1,2-dithiosquarato)nickelates(II) – Synthesis, Structure, EPR and Thermal Behavior

Strauch

Neumann

Kelling

et al. 2015

ACSi

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Dedicated to the memory of Prof. Dr. Jurij V. Bren~i~. Abstract1,2-Dithiosquaratonickelates are available by direct synthesis from metal salts with dipotassium-1,2-dithiosquarate and the appropriate counter cations. The synthesis and characterization, including mass spectrometry, of a series 1,2-dithios-, with several "onium" cations is reported and the X-ray structures of two diamagnetic complexes, (HexPh 3 P) 2 [Ni(dtsq) 2 ] and (BuPh 3 P) 2 [Ni(dtsq) 2 ] with sterically demanding counter ions are presented. The diamagnetic nickel complexes have been doped as host lattices with traces of Cu(II) to measure EPR for additional structural information. The thermal behavior of this series is studied by thermogravimetry and differential thermal analysis (TG/DTA). The thermolysis in air as well as under nitrogen atmosphere of these complexes results in nickel oxide nano-particles in all cases, which are characterized by X-ray powder diffraction.

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“…Schiff base ligands which usually contain O and N donor atoms have played an important role in coordination chemistry since the late 19 th century. Metal complexes with these ligands are becoming increasingly important as biochemical, analytical and antimicrobial reagents, in the design of molecular ferromagnets, in materials chemistry and so on [3,4,5,6,7,8,9,10,11]. We have previously reported the synthesis and antibacterial activities of Zn and Mn Schiff base complexes [12,13]; as an extension of this work, we now report five new Mn(II), Co(II), Ni(II), Cu(II) and Cd(II) complexes of the Schiff base 2-[(4-methylphenylimino)methyl]-6-methoxyphenol, derived from o -vanillin and p -toluidine.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization, Crystal Structure and Antibacterial Activities of Transition Metal(II) Complexes of the Schiff Base 2-[(4-Methylphenylimino)methyl]-6-methoxyphenol

Xian

Liu

et al. 2009

Molecules

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Five transition metal(II) complexes, [ML2Cl2] 1~5, were synthesized from the reaction of MCl2·nH2O (M = Mn, Co, Ni, Cu, Cd) and the Schiff base ligand 2-[(4-methylphenylimino)methyl]-6-methoxyphenol (C15H15NO2, L), obtained by condensation of o-vanillin (2-hydroxy-3-methoxybenzaldehyde) with p-toluidine. They were characterized by elemental analysis, molar conductance, FT-IR spectra, thermal analysis. The structure of complex 1 was determined by single-crystal X-ray diffraction. Its crystal structure is of monoclinic system, space group P21/c with a = 9.0111(18) Å, b = 11.222(2) Å, c =28.130 (6) Å, α = 90 º, β = 92.29(3) º, γ = 90 º, V = 2867.6(10) Å3, Z = 4. The Mn atom is six-coordinate and displays distorted octahedral geometry. The Schiff base ligand and its complexes have been tested in vitro to evaluate their antibacterial activity against bacteria, viz., Escherichia coli, Staphylococcus aureus and Bacillus subtilis. It has been found that the complexes have higher activity than the corresponding free Schiff base ligand against the same bacteria.

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The Stereochemistry of Bis‐Chelate Metal(II) Complexes

Cited by 221 publications

References 499 publications

Sythesis, characterization and antibacterial properties of nickel (ii) Schiff base complex derived from benzoin and oamino benzoic acid

Sythesis, characterization and antibacterial properties of nickel (ii) Schiff base complex derived from benzoin and oamino benzoic acid

Bis(1,2-dithiosquarato)nickelates(II) – Synthesis, Structure, EPR and Thermal Behavior

Synthesis, Characterization, Crystal Structure and Antibacterial Activities of Transition Metal(II) Complexes of the Schiff Base 2-[(4-Methylphenylimino)methyl]-6-methoxyphenol

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