Some Studies in Inorganic Complexes. XIV. Reactions of 2-Methyl-6-aminopyridine and 2-Thioamidopyridine with Some Transition Metal Ions

1963 ◽  
Vol 16 (3) ◽  
pp. 371 ◽  
Author(s):  
GJ Sutton
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Absorption Spectra ◽  
Copper Complexes ◽  
Transition Metal Ions ◽  
The Other ◽  
Ultraviolet Region ◽  
Chelating Ligands ◽  
Near Ultraviolet ◽  
Inorganic Complexes

The following complexes of the chelating ligands 2-methyl-6-aminomethylpyridine (6-methyl-2-picolylamine or mepic) and 2-thioamidopyridine (thiopic) have been prepared and studied: [Cu mepic2X]X, where X = Cl, Br, I, NO3, ClO4, [Cu mepic2C2O4], [Ni mepic3][ClO4]2, [M(II) thiopic3][ClO4]2, [M(III) thiopic3][ClO4]3, (M(II) = Co, Ni; M(III) = CO, Fe), and [Co thiopic3]Cl2. Conductance measurements in ethanol, nitromethane, and nitrobenzene indicate that the [Cu mepic2X]X complexes are 5-covalent whilst the other complexes studied are 6-covalent. All the complexes are "spin free" excepting those of Co(III). Absorption spectra of the copper complexes in the near ultraviolet region were also made.

Characterization on the Microstructures and Optical Performances of TiO2 Doped with Transition Metals

2014 ◽  
Vol 887-888 ◽  
pp. 388-394 ◽  
Author(s):  
Xin Hua Liu ◽  
Yi Deng ◽  
Yu Chuan Zhang ◽  
Yin Hang Zhou
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Photoelectron Spectroscopy ◽  
Transition Metal Ions ◽  
Ultraviolet Region ◽  
Visible Light Region ◽  
X Ray Diffraction ◽  
X Ray ◽  
Light Region ◽  
Cu Ions

The structures and optical performances of TiO2doped with 4thperiodic transition metal ions were investigated in this paper. The characterization results of X-ray photoelectron spectroscopy and X-ray diffraction showed that the transition metal ions existed in oxidative states, and composites formed because of the reaction between doped metal ions and TiO2. The absorption spectroscopy of TiO2doped with zinc was mainly in ultraviolet region, close to that of the pure TiO2. While for TiO2doped with other transition metal ions including V, Cr, Mn, Fe, Co, Ni and Cu ions, the absorption spectroscopies covered ultraviolet region and visible light region, much broader than that of the pure TiO2.

Regulation of magnetic relaxation behavior by replacing 3d transition metal ions in [M2Dy2] complexes containing two different organic chelating ligands

2019 ◽  
Vol 48 (27) ◽  
pp. 10011-10022 ◽  
Author(s):  
Hui-Sheng Wang ◽  
Cheng-Ling Yin ◽  
Zhao-Bo Hu ◽  
Yong Chen ◽  
Zhi-Quan Pan ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Single Molecule ◽  
Magnetic Relaxation ◽  
Transition Metal Ions ◽  
Relaxation Behavior ◽  
Organic Ligands ◽  
Chelating Ligands ◽  
Single Molecule Magnet

Two [MIII2DyIII2] complexes (M = Fe for 1 and Co for 2) with mixed organic ligands were obtained. Complex 2 exhibits single molecule magnet behavior with Ueff = 64.0(9) K.

The optical absorption spectra of certain transition metal ions in muscovite, lepidolite, and fuchsite

1968 ◽  
Vol 5 (1) ◽  
pp. 31-38 ◽  
Author(s):  
G. H. Faye
Keyword(s):  
Transition Metal ◽  
Optical Absorption ◽  
Metal Ions ◽  
Absorption Spectra ◽  
Transition Metal Ions ◽  
Ligand Field ◽  
Optical Absorption Spectra ◽  
Ligand Field Theory ◽  
Octahedral Sites ◽  
Sheet Silicate

The unpolarized optical absorption spectra of the sheet silicate minerals muscovite, lepidolite, and fuchsite have been examined. The spectra, interpreted on the basis of ligand field theory, indicate that all three minerals contain Fe3+ and possibly Ti3+ in octahedral sites. In addition, muscovite is shown to contain octahedrally coordinated Fe2+, lepidolite octahedral Fe2+ and Mn2+, and fuchsite octahedral Cr3+. No evidence was found for transition metals in tetrahedral sites.Some comments are made on the similarity of the spectra of certain of the transition metal ions in several classes of minerals. This leads to the speculation that the cations Fe3+, Mn2+, and Cr3+ may tend to 'mold' their immediate surroundings.

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