Journal ArticleDOI
Reactivity of copper(II) peptide complexes with bioligands (benzimidazole and creatinine)
Angel García-Raso,Juan J. Fiol,Bartomeu Adrover,P. Tauler,Antoni Pons,Ignasi Mata,Enrique Espinosa,Elies Molins +7 more
TLDR
The nature of the peptide seems to be a very important factor for the reactivity of copper(II) peptide complexes with bioligands as mentioned in this paper, and only four new ternary Cu(II)-complexes have been obtained.About:
This article is published in Polyhedron.The article was published on 2003-11-15. It has received 40 citations till now. The article focuses on the topics: Benzimidazole & Square pyramidal molecular geometry.read more
Citations
More filters
Journal ArticleDOI
Biological recognition patterns implicated by the formation and stability of ternary metal ion complexes of low-molecular-weight formed with amino acid/peptides and nucleobases/nucleosides
TL;DR: In low-molecular-weight ternary complexes some recognition patterns are repeatedly observed as mentioned in this paper, such as long bonds between metal ions and nucleobases, hydrogen bonds between the amino group of amino acids and a carbonyl group of the nucleobas and vice versa.
Journal ArticleDOI
Synthesis, structure and properties of some copper(II) complexes containing an ONO donor Schiff base and substituted imidazole ligands
TL;DR: In this paper, five new mixed ligand coper(II) complexes have been synthesized and characterized by means of elemental analysis, FAB mass spectrometry, magnetic susceptibility, X-band EPR, electronic spectroscopy, IR and cyclic voltammetry.
Journal ArticleDOI
(Guanidine)copper complexes: structural variety and application in bioinorganic chemistry and catalysis
TL;DR: In this paper, a review of guanidine copper compounds with an emphasis on structural characteristics and their application in bioinorganic chemistry and catalysis is presented. But the focus of this paper is on the use of the guanidines as neutral donor ligands in copper coordination.
Journal ArticleDOI
Synthesis, structure and biomimetic properties of Cu(II)-Cu(II) and Cu(II)-Zn(II) binuclear complexes: possible models for the chemistry of Cu-Zn superoxide dismutase.
TL;DR: All the observations indicate that these complexes act as good possible models for superoxide dismutase, and spectral measurements of the homobinuclear complexes have shown an antiferromagnetic exchange interaction.
Journal ArticleDOI
Copper(II) complexes as superoxide dismutase mimics: Synthesis, characterization, crystal structure and bioactivity of copper(II) complexes
TL;DR: In this article, two new copper(II) complexes of the type [Cu(L)X2], where L = (E)-N-phenyl-2-[phenyl (pyridine-2-yl)methylene]hydrazinecarboxamide X = Cl/Br have been synthesized and characterized by elemental analyses, FAB (fast atomic bombardment) magnetic measurements, electronic absorption, conductivity measurements cyclic voltammetry (CV) and Electron paramagnetic resonance (epr) spectroscopy.
References
More filters
Journal ArticleDOI
Organometallic compounds containing a guanidinium group. Phenylmercury(II) derivatives of creatine and creatinine
Abstract: Phenylmercury(II) replaces a proton of creatine, H2NC+(NH2)NMeCH2C02-, in basic solution to form the zwitterionic
complex PhHgNHC+(NH2)NMeCH2CO2-. Creatine and creatinine (C4H7N30) react with PhHg((OH)N03)I/2 in aqueous ethanol to form a 2:l complex [(PhHg)2(C4H6N30][N03] which exists in two crystalline forms. Creatinine forms a 1:l
complex [PhHg(C4H7N30)][N03].1/2H20 at pH 1.4 on reaction with PhHg((OH)N03)l/2 in the presence of nitric acid.
The 1:l and 2:l complexes may be interconverted. Creatinine hydronitrate, [H2NCNMeCH2CONH][NO3], and the PhHg(II) complexes of creatinine have similar infrared (including deuterated derivatives) and 1H NMR spectra, consistent with retention of the creatinine ring and presence of a guanidinium group in the complexes. An X-ray structural analysis of one crystalline form of the 2:l complex shows bonding of PhHg(II) groups to the exocyclic and ring nitrogens of creatinine to form the cation
[PhHgNHCNMeCH2CONHgPh]+.
Journal ArticleDOI
Crystal structure, ir-spectrum and electrochemical behaviour of cu(creatinine)2cl2
TL;DR: In this paper, the crystal structure of the little compound has been solved by single-crystal X-ray diffractometry, where the CuII ion is located on a two-fold crystallographic axis in a quasi-tetrahedral coordination.
Journal ArticleDOI
Crystal structures of three complexes of copper(II) with mixed imidazole and glycine peptide ligands
TL;DR: The crystal structures of three mixed-ligand complexes of copper(II) with glycine peptide and imidazole ligands were reported in this paper, where they were shown to have similar crystal structures to the ones of the present paper.
Journal ArticleDOI
Supramolecular networks via pyridine N-oxide CH···O hydrogen bonding in the crystal structures of 2,2′-dithiobis(pyridine N-oxide) and its complexes with 1,2,4,5-tetracyanobenzene and pyromellitic dianhydride
TL;DR: In this paper, hydrogen bonding in crystals of Dithiobis(pyridine Noxide) supports networkformation, and DTPO is shown to support networkformation.
Journal ArticleDOI
X-ray diffraction structure of a ternary copper(II) peptide complex (benzimidazole) (glycylglycinato) copper(II) trihydrate
TL;DR: A ternary complex [Cu(gg)(bzim)·3H 2 O ( 1 ) (gg = glycyl glycine(2−), bzim = benzimidazole) has been crystallized from aqueous solution as mentioned in this paper.