Journal ArticleDOI
Zinc(II) and Cadmium(II) Binary Complexes with Creatinine and Their Mixed-Ligand Complexes with L-Asparagine or L-Glutamic Acid: Potentiometrie Studies
S. Karaderi,D. Bilgic +1 more
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TLDR
In this article, the stability constants of binary complexes formed by creatinine with Zn(II) and Cd(II), and of the mixed-ligand complexes Zn((II)-creatinine1-asparagine and Zn-(II) creatinines-l-glutamic acid) were determined by the Calvin-Bjerrum and IrvingRossotti methods.Abstract:
Creatinine is a physiological component of blood, brain and muscles and an important bioligand, which is the last product of the nitrogen metabolism in the vertebrates. In this study , the stability constants of binary complexes formed by creatinine with Zn(II) and Cd(II), and of the mixed-ligand complexes Zn(II)-creatinine1-asparagine and Zn(II) creatinine-l-glutamic acid were determined by the Calvin-Bjerrum and IrvingRossotti methods. The conditional formation constants and the formation pH ranges of complexes were determined. Relative abundance was plotted using conditional formation constants of the complexes and the steps of the complexes are shown in graphs. The composition of metal-creatinine complexes was determined as metal/ligand = 1: 1.read more
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ZIF-8 Nanoparticles Based Electrochemical Sensor for Non-Enzymatic Creatinine Detection
TL;DR: In this paper, a non-enzymatic electrochemical creatinine sensor via modifying poly(3,4 ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) coated indium tin oxide (ITO) substrate by zeolitic imidazolate framework-8 nanoparticles (ZIF-8 NPs) was reported.
Journal ArticleDOI
DETERMINATION OF STABILITY CONSTANTS OF MIXED LIGAND COMPLEXES OF Cu(II) WITH CREATININE AND ETHYLENEDIAMINE TETRAACETIC ACID OR I-GLUTAMIC ACID: POTENTIOMETRIC AND SPECTROPHOTOMETRIC METHODS
TL;DR: In this paper, the authors used titration potentiometry and spectrophotometry to determine stability constants for mixed complexes of Cu(II) with creatinine and EDTA.
The determination of the stability constants of mixed Li- gand comlexes of creatinine-l-cysteine and creatinine-l- cysteine hydrochloride with Co(Ii), Cd(Ii), Zn(Ii), Mn(Ii): Using potentiometric method
TL;DR: In this article, a potentiometric titration technique has been used to determine stability constants for the various complexes of Zn, Co, Cd, and Mn(II) with creatinine and two amino acids.
Journal ArticleDOI
Mixed-Ligand Complexes of Creatinine and L-Glutamic Acid With Co(II), Cu(II), Mn(II): Potentiometrie Studies
S. Karaderi,D. Bilgic +1 more
TL;DR: In this paper, five coordination modes have been established by X-ray crystallography: bidentate bridging through N(l)(r ing) and deprotonated exocyclic NH site 191, Bidentate binding via N ( l ) (ring) and the exocycyclic 0 ( C = 0 ) (11); monodentate binding through the N (l ) ( ring) site /11/; monodente binding through N (c = 0 ǫ ) /12/; and monodenta binding through
Ternary complex formation of isoniazid with some transition metals and amino acids
TL;DR: In this paper, Rossotti et al. presented a model for stabilizing stabilite sabitleri and showed that 25±0.1 oC de karisik komplekslerin kosullu olusum sabitlersin maksimum oldugu degerin deneysel-olarak bulunan kararlilik sabiti ile uyum icinde oldugu gozlendi.
References
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Journal ArticleDOI
Cardiovascular activity of aromatic guanidine compounds.
Hughes Jl,R. C. Liu,Enkoji T +2 more
TL;DR: Preliminary mechanism studies indicated that the 3,4-dihydroxyphenylguanidines act at least partially by a direct alpha-adrenergic mechanism.
Journal ArticleDOI
Creatinine complexes of zinc, cadmium and mercury
TL;DR: In this paper, Zinc, cadmium and mercury(II) complexes of creatinine of the composition M(Creat) 2 X 2 (X = Cl, Br or I) are characterized by analytical and spectral methods.
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 and molecular structure of bis(creatinite)silver(I) perchlorate dihydrate
M.R. Udupa,Bernt Krebs +1 more
TL;DR: In this article, the crystal and molecular structure of bis(creatinine)silver(II) perchlorate dihydrate, [Ag(C4H7N3O)2] ClO4·2H2O, was determined from single crystal three-dimensional X-ray data collected by counter methods.