Zn(II), Cd(II), and Hg(II) complexes of 6-amino-3-methyl-5-nitrosouracil

Salas-Peregrín, J.M.; Moreno‐Carretero, Miguel N.; Colacio-Rodríguez, E.

doi:10.1139/v85-586

Cited by 14 publications

(5 citation statements)

References 6 publications

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“…Concerning the organic ligand, it is noteworthy that the N3 cyclic atom of the pyrimidine does not act as donor atom, as observed in several structures of metal complexes of analogous ligands [14,18,[22][23][24][25]. This fact is in agreement with the dipolar character of the pyrimidine moiety of the H 3 L ligand [8].…”

Section: Crystal Structure Of {[Cd(hl)h 2 O] á 3h 2 O} Nsupporting

confidence: 75%

Study of protonation and Zn(II), Cd(II), Cu(II) and Mn(II) complexation with a glutamic acid N-pyrimidine derivative: Crystal structure of a neutral Cd(II) complex of the bianionic ligand

et al. 2008

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Section: Crystal Structure Of {[Cd(hl)h 2 O] á 3h 2 O} Nsupporting

confidence: 75%

Study of protonation and Zn(II), Cd(II), Cu(II) and Mn(II) complexation with a glutamic acid N-pyrimidine derivative: Crystal structure of a neutral Cd(II) complex of the bianionic ligand

et al. 2008

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“…In the three complexes, the stretching vibration corresponding to (C¼O) was observed around 1704 cm À1 , lower by nearly 45 cm À1 in comparison with the free ligands. The (N¼O) was observed around 1508 cm À1 for free ligands and their complexes [7,21,22]. The shift to lower wavenumber for (C¼O) is attributed to coordination.…”

Section: Ir Analysismentioning

confidence: 90%

“…The exocyclic nitrogen and/or oxygen atoms of some pyrimidine derivatives bind with metal ions [5]. Bidentate coordination involving N(1) and O(2) has been observed for a Ag þ -uracil complex, and through O(4) and N of NO group for some uracil derivatives [6,7]. For the unsubstituted uracil anion, the binding site is preferentially N1 [8].…”

Section: Introductionmentioning

confidence: 99%

“…Determination of binding site(s) of pyrimidine bases to platinum ions is a step towards understanding the bioinorganic chemistry of these complexes [15], however, there is a limited number of metal complexes with 5-nitrosouracil derivatives [6,7,16]. The present investigation deals with preparation and characterization of Pt(II) complexes with three derivatives of 5-nitrosouracil (I).…”

Section: Introductionmentioning

confidence: 99%

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Synthesis, spectroscopic and thermal studies on platinum(II) complexes of 5-nitrosouracil derivatives

Gaballa

Teleb

Abbas

2007

Journal of Coordination Chemistry

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Three complexes were obtained during reactions of 6-amino-1-methyl-5-nitrosouracil, 6-methylamino-1-methyl-5-nitrosouracil and 6-methylamino-1-benzyl-5-nitrosouracil with K 2 PtCl 4 . The complexes were isolated in good yields as powdery precipitates and characterized through elemental analysis, infrared and 1 H NMR spectroscopies, and thermal analysis. The pyrimidine bases easily substitute chloro ligands as a neutral monodentate ligand form. The exocyclic oxygen atoms are the probable binding sites rather than ring or exocyclic nitrogen atoms. trans Square planar structures were proposed in all cases.

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“…Most metal complexes of this type are studied principally with spectroscopic techniques and X-ray diffraction methods [7][8][9][10][11][12][13].…”

mentioning

confidence: 99%

Thermal studies on Ni(II), Cu(II) and Pd(II) complexes of 6-amino-5-formyluracil and its N-methyl derivatives

Garcia-Megias

Colacio-Rodríguez

Garcı́a-Rodrı́guez

et al. 1987

Journal of Thermal Analysis

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The thermal behaviour of 6-amino-5-formyluracil (HFU), 6-amino-1-methyl-5-formyluracil (I-HFU), 6-amino-3-methyl-5-formyluracil (3-HFU) and 6-amino-1,3-dimethyl-5-formyluracil (HDFU) is described. Only HDFU is shown to contain crystallization water. Dehydration and fusion enthalpy values have been calculated from the DSC curves. Likewise, the thermal behaviour of new complexes obtained by reaction between the above pyrimidine derivatives and Ni(II), Cu(II) and Pd(II) ions is reported.The importance of the interactions of metal ions with pyrimidine and purine is now well recognized [1-6]. Most metal complexes of this type are studied principally with spectroscopic techniques and X-ray diffraction methods [7][8][9][10][11][12][13].By contrast, studies reporting the thermal behaviour of these complexes are scanty. For this reason and in connection with our studies on the synthesis, characterization and thermal behaviour of derivatives of biological importance [14][15][16][17][18][19][20][21][22], we describe here the thermal behaviour of tJour pyrimidine derivatives, 6-amino-5-formyluracil (HFU), 6-amino-l-methyl-5-formyluracil (1-HFU), 6-amino-3-m~thyl-5-formyluracil (3-HFU) and 6-amino-l,3-dimethyl-5-formyluracil (HDFU), and the new Ni(II), Cu(II) and Pd(II) complexes of these pyrimidine derivatives.

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Zn(II), Cd(II), and Hg(II) complexes of 6-amino-3-methyl-5-nitrosouracil

Cited by 14 publications

References 6 publications

Study of protonation and Zn(II), Cd(II), Cu(II) and Mn(II) complexation with a glutamic acid N-pyrimidine derivative: Crystal structure of a neutral Cd(II) complex of the bianionic ligand

Study of protonation and Zn(II), Cd(II), Cu(II) and Mn(II) complexation with a glutamic acid N-pyrimidine derivative: Crystal structure of a neutral Cd(II) complex of the bianionic ligand

Synthesis, spectroscopic and thermal studies on platinum(II) complexes of 5-nitrosouracil derivatives

Thermal studies on Ni(II), Cu(II) and Pd(II) complexes of 6-amino-5-formyluracil and its N-methyl derivatives

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