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Organometallic compounds containing a guanidinium group. Phenylmercury(II) derivatives of creatine and creatinine
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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]+.read more
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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
An electrospray mass spectrometric study of methylmercury(II) nitrogen base derivatives and their ligand exchange reactions
Allan J. Canty,Ray Colton +1 more
TL;DR: In this paper, a number of methylmercury(II) complexes of the type [MeHgL] + (L=neutral nitrogen base, e.g. N -methylpyrazoles, bis(pyridin-2-yl)methane, etc.) and PhHg(II)-clusters of creatinine were observed and the intact ion was observed.
Journal ArticleDOI
A four-membered chelate complex of Cu(II) with creatinine
TL;DR: In this article, the complex formation between creatinine and Cu(II) was studied by means of electronic, IR and EPR spectroscopy, and spectral data showed the formation of a four-membered chelate with distorted rhombic structure.
Journal ArticleDOI
X-ray crystal structure of a ternary copper(II) peptide creatinine complex, (Aquo)(Creatinine)(Glycylglycinato) copper(II) sesquihydrate
TL;DR: The first creatinine ternary complex has been crystallized from aqueous solution as mentioned in this paper, and the complete crystal structure is maintained by an extensive hydrogen-bonding network in which the three types of water molecules are involved.
Journal ArticleDOI
Complexes of Nickel(II) with creatinine: X-ray crystal structures and spectroscopic studies
TL;DR: In this paper, two creatinine complexes were obtained in the form of suitable crystals for X-ray crystallography, one in triclinic space group P 1 (#2) with a = 9.940(2) A, b = 15.732(6), A, c = 9,339(3) A, α = 96.30 (3)°, γ = 75.83(3)-°, V = 1369(2), Z = 1, R = 0.039.
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