Browse
Submit Data
Databases
API
Help

Dataset Information

20 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Bis(2,2'-bipyridil)Copper(II) Chloride Complex: Tyrosinase Biomimetic Catalyst or Redox Mediator?

ABSTRACT: In this article, construction of amperometric sensor(s) based on screen-printed carbon electrodes covered by thin layers of two types of carbon nanomaterials serving as amplifiers, and containing [Cu(bipy)₂Cl]Cl∙5H₂O complex is reported. Their performance and biomimetic activity towards two selected neurotransmitters (dopamine and serotonin) was studied mainly using flow injection analysis (FIA). The important parameters of FIA such as working potential, flow rate, and pH were optimized. The mechanism of the catalytic activity is explained and experimentally confirmed. It reveals that presence of hydrogen peroxide plays a crucial role which leads to answer the title question: can presented complex really be considered as a tyrosinase biomimetic catalyst or only as a redox mediator?

SUBMITTER: Sys M

PROVIDER: S-EPMC7795177 | biostudies-literature |

REPOSITORIES: biostudies-literature

ACCESS DATA

Json Xml

Similar Datasets

Bis(2,2'-bi-1H-imidazole-?N,N)(thio-cyanato-?N)copper(II) chloride.

Project description:In the title salt, [Cu(NCS)(C(6)H(6)N(4))(2)]Cl, the Cu(II) atom adopts a five-coordinated square-pyramidal geometry consisting of an N atom from a thio-cyanate anion and four N atoms from two chealting biimidazole ligands. The thio-cyanate ligand occupies the axial position and is, like the Cu(II) centre, located on a mirror plane. The cation and anion are linked into a linear chain by N-H?S and N-H?Cl hydrogen bonds.

| S-EPMC2971028 | biostudies-literature

Bis(?-biphenyl-2,2'-dicarboxyl-ato)bis-[(2,2'-bipyridine)copper(II)].

Project description:The title compound, [Cu(2)(C(14)H(8)O(4))(2)(C(10)H(8)N(2))(2)], is a centrosymmetric binuclear copper(II) complex, with a Cu?Cu separation of 6.136?(16)?Å. The Cu atom displays a cis-CuN(2)O(2) square-planar geometry, although two long (> 2.43?Å) Cu?O contacts complete a distorted cis-CuN(2)O(4) octa-hedron. Extensive C-H?O hydrogen bonds link the mol-ecules into a three-dimensional network.

| S-EPMC2960666 | biostudies-literature

Bis(μ-biphenyl-2,2'-dicarboxyl-ato)bis-[(2,2'-bipyridine)copper(II)].

Project description:The title compound, [Cu(2)(C(14)H(8)O(4))(2)(C(10)H(8)N(2))(2)], was obtained by solvothermal synthesis. The Cu(II) atom is coordinated by one chelating 2,2'-bipyridine ligand and two carboxyl groups from different biphenyl-2,2'-dicarboxyl-ate ligands, leading to a distorted octahedral environment. Each carboxyl-ate group makes one short Cu-O bond [1.9608 (14) and 1.9701 (14) Å] and one longer Cu-O contact [2.4338 (17) and 2.5541 (17) Å] to each Cu(II) atom. The biphenyl-2,2'-dicarboxyl-ate ligands bridge between Cu(II) atoms, forming a dinuclear complex around a crystallographic inversion centre.

| S-EPMC2968894 | biostudies-literature

Bis(?-biphenyl-2,2'-dicarboxyl-ato)bis-[aqua-(4,4'-dimethyl-2,2'-bipyridine-?N,N')copper(II)].

Project description:The mol-ecule of the title binuclear copper(II) complex, [Cu(2)(C(14)H(8)O(4))(2)(C(12)H(12)N(2))(2)(H(2)O)(2)], is bis-ected by a crystallographic twofold axis. Each Cu(II) atom is coordinated in a distorted octa-hedral geometry by three O atoms from two biphen-yl-2,2'-dicarboxyl-ate anions, one aqua O atom and two N atoms of a 4,4'-dimethyl-2,2'-bipyridine ligand. Intramolecular O-H?O hydrogen bonds between the coordinated water molecules and the carboxylate O atoms are also present.

| S-EPMC2971185 | biostudies-literature

{2,2'-[(2,2-Dimethylpropane-1,3-diyl-dinitrilo)bis(phenylmethylidyne)]di-phenolato}copper(II).

Project description:The complete mol-ecule of the title complex, [Cu(C(31)H(28)N(2)O(2))], is generated by the application of twofold symmetry; the Cu and CMe(2) atoms lie on the axis. The geometry around the Cu(II) atom is distorted square-planar. The dihedral angle between the two phenyl rings is 76.0?(3) °. The crystal packing is stabilized by inter-molecular C-H?? inter-actions.

| S-EPMC3212202 | biostudies-literature

Bis(2,2'-biimidazole-κN,N')bis-(2-bromo-fumarato-κO)copper(II).

Project description:In the title compound, [Cu(C(4)H(2)BrO(4))(2)(C(6)H(6)N(4))(2)], the central Cu(II) atom lies on an inversion center and is six-coordinated in an octahedral geometry by four N atoms from two chelating biimidazole mol-ecules in the equatorial plane and two O atoms from two 2-bromo-fumarate ligands in the axial positions. O-H⋯O, N-H⋯O and C-H⋯O hydrogen bonds lead to a three-dimensional network.

| S-EPMC2915152 | biostudies-literature

Aqua-chlorido(2,2':6',2''-terpyrid-yl)copper(II) chloride monohydrate.

Project description:The title complex, [CuCl(C(15)H(11)N(3))(H(2)O)]Cl·H(2)O, is composed of a monocation that possesses mirror symmetry. The Cu(II) atom has a distorted square-pyramidal geometry, being coordinated by the three N atoms of the terpyridine ligand and a Cl atom in the equatorial plane, and by a water mol-ecule O atom in the axial position. The charges are balanced by a chloride anion positionally disorded over two positions related by the mirror symmetry. The compound crystallizes as a monohydrate, with the water mol-ecule also being positionally disordered over two positions related by the mirror symmetry. In the crystal, the various components of the complex are linked via O-H⋯O and O-H⋯Cl hydrogen bonds, forming a two-dimensional network in the ab plane. There are also a number of C-H⋯Cl and C-H⋯O inter-actions which stabilize the crystal structure.

| S-EPMC3008087 | biostudies-literature

Bis(2,2'-bipyridine)(2-hy-droxy-2,2-diphenyl-acetato)-copper(II) nitrate dihydrate.

Project description:In the title complex, [Cu(C(14)H(11)O(3))(C(10)H(8)N(2))(2)]NO(3)·2H(2)O, the Cu(II) atom is coordinated by four N atoms from two 2,2'-bipyridine ligands and two O atoms from one benzilate ligand in a distorted octa-hedral geometry. A supra-molecular network is formed via inter-molecular O-H⋯O and C-H⋯O hydrogen-bonding inter-actions. π-π stacking inter-actions between neighboring pyridine rings are also present, the centroid-centroid distance being 3.808 (2) Å.

| S-EPMC2983227 | biostudies-literature

Diaqua-(2,2'-bipyridine-?N,N')bis-(perchlorato-?O)copper(II).

Project description:The central CuN(2)O(4) motif of the title compound, [Cu(ClO(4))(2)(C(10)H(8)N(2))(H(2)O)(2)], exhibits a Jahn-Teller-distorted octa-hedral geometry around the metal atom, showing a considerably long Cu-O bond distance of 2.5058?(12)?Å towards the second perchlorate group, giving a (4 + 1+1)-type coordination mode. In the crystal, the components are linked via inter-molecular O-H?O hydrogen bonds, forming layers parallel to (001). Additional stabilization within these layers is provided by ?-? [centroid-centroid distances of 3.7848?(9)-4.4231?(9)?Å] stacking inter-actions.

| S-EPMC3089365 | biostudies-literature

Bis(2,2'-bipyridine-κN,N')(nitrato-κO)copper(II) perchlorate.

Project description:In the title compound, [Cu(NO(3))(C(10)H(8)N(2))(2)]ClO(4), the five-coordinated Cu(II) atom has a distorted square-pyramidal CuN(4)O environment; the O atom is in the axial position whereas the N atoms from two bipyridine (bipy) ligands are in the equatorial plane. In the crystal, mol-ecules are assembled by C-H⋯O hydrogen bonding and π-π inter-actions between bipy groups [centroid-centroid distances = 3.7686 (16) and 3.7002 (16) Å] into a three-dimensional network. The nitrite anion is equally disordered over two sets of sites.

| S-EPMC3051949 | biostudies-literature

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data