Square-planar copper(II) complexes with tetradentate amido-carboxylate ligands. Crystal structure of Na2[Cu(obap)]2·2H2O. Strain analysis and spectral assignments of complexes

Matović, Zoran D.; Miletić, Vesna D.; Samardžić, Goran; Pelosi, Giorgio; Ianelli, S.; Trifunović, Snežana

doi:10.1016/j.ica.2005.04.025

Cited by 53 publications

(32 citation statements)

References 28 publications

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“…From these electronic transitions which is suggested the copper complex is octahedral geometry around the copper ion ( 22,23) which is illustrated in figure (8).…”

Section: Electronic Absorption Spectra Of the 2-(2-aminoethyl) Isoindmentioning

confidence: 96%

Synthesis and Identification of Some New Metal Complexes of Mixed Schiff Base Ligands

2015

IJSR

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“…From these electronic transitions which is suggested the copper complex is octahedral geometry around the copper ion ( 22,23) which is illustrated in figure (8).…”

Section: Electronic Absorption Spectra Of the 2-(2-aminoethyl) Isoindmentioning

confidence: 96%

Synthesis and Identification of Some New Metal Complexes of Mixed Schiff Base Ligands

2015

IJSR

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“…The visible spectra of Cu(II) complexes 3 and 4 displayed single absorption bands at 613 and 619 nm, respectively. This band could be attributed to 2 B1g← 2 A1g transition in square planar Cu(II) geometry [47][48][49].…”

Section: Ir and Uv-vis Spectra Of The Complexesmentioning

confidence: 99%

“…The Cu1 center is penta-coordinated by N1, N1', O1, O1' donor atoms of the tetradentate L OEt -phda 2− Schiff base dianion, and O3 of aqua ligand. The CuN2O3 chromophore may be described as tetragonal pyramid (SP) (τ = 0.00) [48] with O3 in the apical site [Cu1-O3 = 2.360(3) Å] The basal Cu-O/N bond distances are 1.9337(14) and 1.9711(16) Å, and the O1-Cu1-N1' bond angle is 170.15(7)°. Cu1 deviates by 0.160 Å from the basal O2N2 plane.…”

Section: Description Of the Structuresmentioning

confidence: 99%

Metal(II) Complexes of Compartmental Polynuclear Schiff Bases Containing Phenolate and Alkoxy Groups

et al. 2016

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Five mono-nuclear Cu(II) and Ni(II) complexes and one dinuclear Zn(II) complex were synthesized from the Schiff bases N,N'-bis(3-ethoxy-2-hydroxybenzylidene)-1,2-phenylenediamine (H 2 L OEt -phda) and 2-ethoxy-6-({2- [(3-ethoxy-The complexes were structurally characterized with elemental microanalyses, IR, UV-Vis and ESI-MS spectroscopic techniques as well as single crystal X-ray crystallography. The metal centers display distorted square planar geometries in 2-4 and 5 and distorted square pyramidal (SP) in 1, whereas in 6 an intermediate geometry between SP and TBP was observed around the first Zn 2+ ion and a tetrahedral around the second ion, with one acetate is acting as a bridging ligand. In all cases, metal ions were incorporated into the N 2 -O 2 binding site with no involvement of the alkoxy groups in the coordination. The L OEt -ambza-complexes 3-6 revealed significant dihedral angles between the phenol rings and the plane containing the central benzene ring, and large O 2 -O 2 bond distances (5.1-5.9Ǻ). Results are discussed in relation to other related Schiff base complexes.

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“…The observed spectrum is similar to that observed for square planar copper (II) complexes on chemically modified silica gels containing pendant chains with amine groups, 35 as well as on chemically modified cellulose acetate membranes. 36 The Gaussian components of the absorption bands show a peak maxima at 550 and 640 nm, which correspond to a complex with D 4h local crystal field symmetry and can be assigned to the 2 B 1g → 2 E g and 2 B 1g → 2 A 1g , 2 B 2g d-d transitions, [37][38][39][40] respectively.…”

Section: Adsorption Of Coppermentioning

confidence: 99%

Adsorption of a copper (II) complex on calcium phosphate intercalated with 4-aminobenzoic acid: synthesis and electrochemical investigation

Silva¹,

Souza²,

Santos³

et al. 2013

Quím. Nova

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Recebido em 14/2/13; aceito em 9/5/13; publicado na web em 17/7/13In this study, the adsorption isotherm of copper (II) on a calcium phosphate host intercalated with 4-aminobenzoic acid in an ethanol solution was investigated. This gave a maximum adsorption capacity of 1.74 mmol g -1 . The material was incorporated into a carbonpaste electrode, and its electrochemical properties were investigated. However, for a dopamine solution, the anodic peak current increased owing to the electrocatalytic oxidation. The electrode presented the same response for at least 150 successive measurements, showing good repeatability. The modified electrode is very stable and reproducible. The electrode sensor was successfully applied for dopamine determination in pharmaceutical preparations.

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Square-planar copper(II) complexes with tetradentate amido-carboxylate ligands. Crystal structure of Na2[Cu(obap)]2·2H2O. Strain analysis and spectral assignments of complexes

Cited by 53 publications

References 28 publications

Synthesis and Identification of Some New Metal Complexes of Mixed Schiff Base Ligands

Synthesis and Identification of Some New Metal Complexes of Mixed Schiff Base Ligands

Metal(II) Complexes of Compartmental Polynuclear Schiff Bases Containing Phenolate and Alkoxy Groups

Adsorption of a copper (II) complex on calcium phosphate intercalated with 4-aminobenzoic acid: synthesis and electrochemical investigation

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