Synthesis of 3-butanoyl- and 3-benzoyl-4-hydroxy-3-pyrrolin-2-ones and their complexes with metal ions

1990 ◽  
Vol 39 (4) ◽  
pp. 307-316 ◽  
Author(s):  
Olga Markopoulou ◽  
John Markopoulos ◽  
David Nicholls
Keyword(s):  
Metal Ions ◽  
Complexes With Metal Ions

Synthesis of N2, N6-bis(5-methylthiazol-2-yl)pyridine-2,6-dicarboxamide fluoroscent sensor for detection of Cu2+ and Ni2+ Ions

Drug Research ◽  
2021 ◽  
Author(s):  
Anuroop Kumar ◽  
Netrapal Singh ◽  
Mordhwaj Kumar ◽  
Uma Agarwal
Keyword(s):  
Spectral Analysis ◽  
Detection Limit ◽  
Metal Ions ◽  
1H Nmr Spectroscopy ◽  
Stoichiometric Ratio ◽  
Selective Detection ◽  
Ft Ir ◽  
Uv Visible ◽  
Complexes With Metal Ions ◽  
Competitive Ions

AbstractThis article reports an amide based Chemosensor used for selective detection of divalent Cu+2 and Ni+2 ions via Fluorescence turn off. The selective sensing ability of Chemosensor was investigated in presence of different metal ions Mg2+, Ag+, Fe2+, K+, Cu2+, Ni2+, Hg2+, Pb2+, Mn2+, Pd2+, Cd2+ and Mn3+ as competitive ions. The receptor i. e. Chemosensor formed complexes with metal ions in 1:1 stoichiometric ratio. The detection limit and binding constant calculated as 1.92×10–4 and 1.4×10–4 M and 2.16×103 M−1 and 3.09×103 M−1 for Cu2+ and Ni2+ions respectively. The complexes were characterized by UV/visible, FT-IR, 13C NMR and 1H NMR spectroscopy. Further the structure and Crystallinity were calculated by P-XRD spectral analysis. The crystallinity found to be 65.27 and 67.87% respectively

NMR and potentiometric studies of 1,4,7-triazacyclononane-N,N′,N″-tris(methylenephosphonate monoethylester) and its complexes with metal ions

1992 ◽  
Vol 195 (1) ◽  
pp. 89-93 ◽  
Author(s):  
Istvan Lazar ◽  
Ravichandran Ramasamy ◽  
Erno Brücher ◽  
Carlos F.G.C. Geraldes ◽  
A.Dean Sherry
Keyword(s):  
Metal Ions ◽  
Potentiometric Studies ◽  
Complexes With Metal Ions

Spectral and theoretical study of 2-methyl-3-{[(Z)-3-methyl-5-oxo-1-phenylpyrazol-4-ylidene)methyl]amino}quinazolin-4-one and its complexes with metal ions M(II)

2015 ◽  
Vol 85 (7) ◽  
pp. 1706-1712 ◽  
Author(s):  
L. D. Popov ◽  
S. A. Borodkin ◽  
Yu. P. Tupolova ◽  
M. E. Kletskii ◽  
O. N. Burov ◽  
...  
Keyword(s):  
Metal Ions ◽  
Theoretical Study ◽  
Complexes With Metal Ions

Structural analysis and sheep pituitary receptor binding of GnRH and its complexes with metal ions

2003 ◽  
Vol 94 (1-2) ◽  
pp. 28-35 ◽  
Author(s):  
Nicola D’Amelio ◽  
Elena Gaggelli ◽  
Alina Gajewska ◽  
Helena Kochman ◽  
Kazimierz Kochman ◽  
...  
Keyword(s):  
Structural Analysis ◽  
Metal Ions ◽  
Receptor Binding ◽  
Complexes With Metal Ions

Hydroxamic and aminohydroxamic acids and their complexes with metal ions

1992 ◽  
Vol 114 (2) ◽  
pp. 169-200 ◽  
Author(s):  
Barbara Kurzak ◽  
Henryk Kozłowski ◽  
Etelka Farkas
Keyword(s):  
Metal Ions ◽  
Complexes With Metal Ions

scholarly journals (96) Color Generation in Hydrangea Sepals as Controlled by Metal Ion Complexes

HortScience ◽  
2005 ◽  
Vol 40 (4) ◽  
pp. 1046C-1046
Author(s):  
Henry D. Schreiber ◽  
Timothy Berry ◽  
Nam Trant
Keyword(s):  
Oxalic Acid ◽  
Metal Ions ◽  
Metal Ion ◽  
Color Change ◽  
Heat Of Solution ◽  
Acid Complex ◽  
Color Changes ◽  
Weak Complexes ◽  
Neutral Soil ◽  
Complexes With Metal Ions

The sepals of many hydrangea cultivars change color from red in basic/neutral soil to blue in acidic soil. This change is generally attributed to Al(III) becoming mobile in acidic soils, allowing it to be absorbed through the roots as a citric acid complex; the ion of Al(III) then forms a blue complex in the sepals with an anthocyanin that is red in the absence of Al(III). This study investigated selected metal ions that might also result in similar color changes in hydrangea sepals. Model anthocyanins such as cyanidin and delphinidin glucoside readily formed blue complexes with metal ions with a high charge/size ratio [that is: Mo(VI), U(VI), and Zr(IV), in addition to Al(III)]. The anthocyanins only formed weak complexes with Fe(III) and Ga(III), and no complexes with Mg(II) and Mn(II). In order for the color change to occur in the sepals, though, the hydrangea must first be able to selectively concentrate the metal ion in the plant from the soil as a complex with citric or oxalic acid. The complexation of Al(III) with the organic acid is shown by the measurement of the heat of solution of citric and oxalic acid in Al(III) solutions as half that of the acids in just water. The presence of Al(III) also enhanced the solubility of oxalic acid in water. Mo(VI) likewise enhanced the organic acid's solubility, while Fe(III), Fe(II), and U(VI) did not appreciably affect the solubility. Mo(VI) and similar ions may be candidates to artificially induce bluing of hydrangea sepals, instead of the current use of Al(III).

Studies on TTA complexes with metal ions-IV

1968 ◽  
Vol 30 (1) ◽  
pp. 241-251 ◽  
Author(s):  
Y. Baskin ◽  
J.R. Ferraro
Keyword(s):  
Metal Ions ◽  
Complexes With Metal Ions
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