scholarly journals Potentiometric and Spectroscopic Studies of Sulfonamide Azo-Dye Complexes with some Transition Metal Ions and Uranium

2009 ◽  
Vol 27 (2) ◽  
pp. 143-152 ◽  
Author(s):  
E H El-Mossalamy
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Azo Dye ◽  
Transition Metal Ions ◽  
Spectroscopic Studies

Spectroscopic studies on Pb3O4–ZnO–P2O5 glasses doped with transition metal ions

2011 ◽  
Vol 406 (21) ◽  
pp. 4027-4030 ◽  
Author(s):  
G. Giridhar ◽  
S. Sreehari Sastry ◽  
M. Rangacharyulu
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Transition Metal Ions ◽  
Spectroscopic Studies

Spectroscopic studies of fullerenes doped with rare earth and transition metal ions

1995 ◽  
Vol 66-67 ◽  
pp. 244-248 ◽  
Author(s):  
K.R. Huffman ◽  
K. DeLapp ◽  
H. Andrews ◽  
P. Sprinkle ◽  
M. Nickels ◽  
...  
Keyword(s):  
Rare Earth ◽  
Transition Metal ◽  
Metal Ions ◽  
Transition Metal Ions ◽  
Spectroscopic Studies

155Gd Mössbauer Spectroscopic Study of GdM(CN)6 · 4H2O (M = CrIII, FeIII and CoIII) and KGdM(CN)6 · 3H2O (M = FeII and RuII)

2002 ◽  
Vol 57 (6-7) ◽  
pp. 581-585 ◽  
Author(s):  
Junhu Wang ◽  
Junko Abe ◽  
Takafumi Kitazawa ◽  
Masashi Takahashi ◽  
Masuo Takeda
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Spectroscopic Study ◽  
Crystal Structures ◽  
Transition Metal Ions ◽  
Spectroscopic Studies ◽  
Coupling Constants ◽  
Orthorhombic Distortion ◽  
Ionic Radii ◽  
Quadrupole Coupling

155Gd Mössbauer spectroscopic studies of the title complexes have been performed. Although the 155Gd isomer shifts (d) varied scarcely, the quadrupole coupling constants (e2qQ) changed in the range 4.07-4.81 mm s-1. The e2qQ values of KGdM(CN)6 · 3H2O (M = FeII and RuII) are larger than those of GdM(CN)6 · 4H2O (M = CrIII, FeIII, and CoIII), these values increasing with increasing orthorhombic distortion of the crystal structures. A relationship between the e2qQ values and the ionic radii of the transition metal ions has also been recognized

scholarly journals Spectroscopic Studies and DFT Calculations of Cimetidine Complexes with Transition Metal Ions

2017 ◽  
Vol 57 (3) ◽  
Author(s):  
Daniela Olea-Román ◽  
Juan Carlos Villeda-García ◽  
Raúl Colorado-Peralta ◽  
Alejandro Solano-Peralta ◽  
Mario Sanchez ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Coordination Compounds ◽  
Minimum Energy ◽  
Transition Metal Ions ◽  
Spectroscopic Studies ◽  
Bidentate Ligand ◽  
Potential Map ◽  
Coordination Behavior

The coordination behavior of the antiulcer drug cimetidine (cime) towards transition metal ions was investigated. The synthesis and characterization of [Cr(cime)<sub>2</sub>Cl<sub>2</sub>]Cl·3H<sub>2</sub>O, [Co(cime)Cl<sub>2</sub>]·5H<sub>2</sub>O, [Co(cime)<sub>3</sub>Cl]Cl·3H<sub>2</sub>O, [Ni(cime)Cl<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>]·H<sub>2</sub>O, [Cu(cime)Cl<sub>2</sub>]·2H<sub>2</sub>O, [Cu(cime)<sub>2</sub>Cl(H<sub>2</sub>O)]Cl·H<sub>2</sub>O, [Cu(cime)<sub>3</sub>Cl<sub>2</sub>]·3H<sub>2</sub>O, [Cu<sub>2</sub>(cime)Cl<sub>4</sub>], and [Zn(cime)Cl<sub>2</sub>]·1.5H<sub>2</sub>O are discussed, where cime acts as monodentate (imidazole N3) or bidentate ligand (N3 and S8). IR, UV-vis, EPR and NMR spectroscopies, mass spectrometry (FAB+), were employed for the characterization. In order to identify the most reactive areas of cimetidine, the electrostatic potential map of the ligand was calculated; also the structures of minimum energy of the coordination compounds were modeled using DFT (B3LYP/def2-TZVP) calculations.

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