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.
About: This article is published in Polyhedron.The article was published on 1984-01-01. It has received 26 citations till now. The article focuses on the topics: Zinc & Nuclear magnetic resonance spectroscopy.
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TL;DR: In this article, three Ni(II)-creatinine complexes are synthesized in organic media and it is proved that the complexes are formed only in nonaqueous media and their dissolution in water is connected with immediate dissociation.
16 citations
TL;DR: In this article, the synthesis of new crystalline platinum creatinine complexes and particularly their chromophore derivatives was described, the properties of which substantially enhance out understanding of this interesting class of compounds.
15 citations
TL;DR: In this article, the fundamental vibrations for the creatinine molecule were assigned by normal coordinate analysis in the generalized valence force field approximation in the infrared spectra of the molecule.
13 citations
TL;DR: In this article, a tetrahedral geometry for the Cu(II) adduct with neutral creatinine was obtained and IR evidence suggests that the adduct is tetrahedrahedral.
Abstract: A Cu(II) complex of creatinine (creat) was prepared, with formula Cu(creat)2Cl2, as well as a Cu(I) creatinine complex, Cu(creat H_1)(EtNH2).H2O(EtNH2 = ethylamine). The Cu(II) adduct is complexed with neutral creatinine and IR evidence suggests a tetrahedral geometry for the complex with bonding to the ring amino nitrogen atom. Diamagnetic Cu(creat H_1)(EtNH2).H2O, formed from a redox reaction between Cu(II) and creatinine, is composed of Cu(I) atoms bonded to the deprotonated ring amino nitrogen, with the exocyclic carbonyl group hydrogen bonded to coordinated ethylamine molecules.
11 citations
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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]+.
23 citations
11 citations