Calorimetric Measurements on Metal Sulfates and Their Hydrates: Electrode Potentials and Thermodynamic Data for Aqueous Ions of Transition Elements

1968 ◽  
pp. 195-201
Author(s):  
John W. Larson ◽  
Loren G. Hepler
Keyword(s):  
Thermodynamic Data ◽  
Transition Elements ◽  
Electrode Potentials ◽  
Calorimetric Measurements ◽  
Aqueous Ions

Electrode potentials and thermodynamic data for aqueous ions. Copper, zinc, cadmium, iron, cobalt, and nickel

1968 ◽  
Vol 72 (8) ◽  
pp. 2902-2907 ◽  
Author(s):  
J. W. Larson ◽  
P. Cerutti ◽  
H. K. Garber ◽  
L. G. Hepler
Keyword(s):  
Thermodynamic Data ◽  
Iron Cobalt ◽  
Electrode Potentials ◽  
Zinc Cadmium ◽  
Aqueous Ions ◽  
Copper Zinc ◽  
Cobalt And Nickel

Thermodynamics of metal-ligand bond formation. XXV. Addition of bases to Bis[O,O'-diethyl thiomalonato]nickel(II) in various solvents

1977 ◽  
Vol 30 (3) ◽  
pp. 495 ◽  
Author(s):  
L Ang ◽  
DP Graddon ◽  
VAK Ng
Keyword(s):  
Thermodynamic Data ◽  
Driving Force ◽  
Bond Formation ◽  
Adduct Formation ◽  
Calorimetric Measurements ◽  
Carbon Tetra ◽  
Metal Ligand ◽  
Ligand Bond

Thermodynamic data have been obtained from spectroscopic and calorimetric measurements for the addition of pyridine and 4- methylpyridine to bis(O,O?-diethyl thiomalonato)nickel(II), Ni(etm)2, in solution in cyclohexane, benzene, 1,2-dichloroethane, acetonitrile, butan-2-one and carbon tetra-chloride. In each solvent two base molecules add successively, giving Ni(etm)2B then Ni(etm)2B2. There are only small variations in K1 and K2 in different solvents; typically K1 ≈ 200, K2 ≈ 100 l. mol-1, ΔH�1+2 ≈ -65, ΔH�2 ≈ 0 kJ mol-1 at 30�C, but in benzene and cyclohexane ΔH�2 ≈ -25 and in cyclohexane ΔH�1+2 ≈ -100 kJ mol-1. The main driving force for adduct formation is apparently the formation of the first Ni-N bond, which is accompanied by a spin change.

scholarly journals Assessment of thermodynamic data for CuCrO2 delafossite from calorimetric measurements

2019 ◽  
Vol 680 ◽  
pp. 178345
Author(s):  
J. Schorne-Pinto ◽  
A. Janghorban ◽  
M. Lomello-Tafin ◽  
A. Pisch ◽  
G. Mikaelian ◽  
...  
Keyword(s):  
Thermodynamic Data ◽  
Calorimetric Measurements

Reactivity of transition metal fluorides. V. Reactions of hexafluorides of Molybdenum, Tungsten, and Uranium with ionic chlorides

1968 ◽  
Vol 21 (6) ◽  
pp. 1415 ◽  
Author(s):  
TA O'Donnell ◽  
PW Wilson
Keyword(s):  
Transition Metal ◽  
Thermodynamic Data ◽  
Transition Elements ◽  
Metal Fluorides ◽  
Transition Metal Fluorides

An earlier investigation of the reactions of higher fluorides of transition elements with a range of covalent chlorides has now been extended to cover the reactions of the hexafluorides of molybdenum, tungsten, and uranium with binary ionic chlorides. The observed results correlate well with published thermodynamic data.

Thermodynamic data of U3Ga5 from calorimetric measurements

2017 ◽  
Vol 129 (1) ◽  
pp. 241-247
Author(s):  
P. Manikandan ◽  
R. Kandan ◽  
T. S. Lakshmi Narasimhan ◽  
B. Prabhakara Reddy ◽  
M. Joseph
Keyword(s):  
Thermodynamic Data ◽  
Calorimetric Measurements

scholarly journals New thermodynamic data for CoTiO3, NiTiO3 and CoCO3 based on low-temperature calorimetric measurements

2011 ◽  
Vol 5 (1) ◽  
Author(s):  
Stephan Klemme ◽  
Wilfried Hermes ◽  
Mathias Eul ◽  
Clazina H Wijbrans ◽  
Arno Rohrbach ◽  
...  
Keyword(s):  
Low Temperature ◽  
Thermodynamic Data ◽  
Calorimetric Measurements

HEATS OF ASSOCIATION OF AQUEOUS COPPER, NICKEL, AND COBALT IONS WITH HALIDE IONS

1966 ◽  
Vol 44 (14) ◽  
pp. 1709-1716 ◽  
Author(s):  
M. B. Kennedy ◽  
M. W. Lister
Keyword(s):  
Ionic Strength ◽  
Heats Of Formation ◽  
Halide Ions ◽  
Cobalt Ions ◽  
Copper Nickel ◽  
Calorimetric Measurements ◽  
Aqueous Ions

Calorimetric measurements are reported for the heats of formation of CoCl+, NiCl+, CuCl+, CoBr+, NiBr+, and CuBr+ from simple aqueous ions. Values of ΔF, ΔH, and ΔS for these reactions at 25 and 40 °C, and an ionic strength of 2.0 were found. It was noted that ΔH and ΔS seem to be related by the equation: ΔH = 254ΔS + 201, for values at both temperatures.

scholarly journals Ruthenium redox equilibria: 3. Pourbaix diagrams for the systems Ru-H2O and Ru-Cl--H2O

2016 ◽  
Vol 6 (1) ◽  
pp. 145 ◽  
Author(s):  
Igor Povar ◽  
Oxana Spinu
Keyword(s):  
Thermodynamic Data ◽  
Thermodynamic Approach ◽  
Pourbaix Diagrams ◽  
Electrode Potentials ◽  
Standard Electrode Potentials ◽  
Redox Equilibria

<p class="PaperAbstract"><span lang="EN-US">On the basis of selected thermodynamic data, the standard electrode potentials of pos­sible half reactions in the Ru-H<sub>2</sub>O and Ru-Cl<sup>-</sup>-H<sub>2</sub>O systems have been calculated. Using the thermodynamic approach developed by the authors, the potential - pH and potential - pCl diagrams for the considered system have been built.</span></p>

Study of charge transfer in FeTi

1983 ◽  
Vol 41 ◽  
pp. 296-297
Author(s):  
J. Taft∅
Keyword(s):  
Charge Transfer ◽  
Charge Distribution ◽  
Electron Scattering ◽  
Periodic System ◽  
Electron Distribution ◽  
Scattering Amplitude ◽  
Transition Elements ◽  
Hartree Fock ◽  
Cscl Structure ◽  
The Right

It is well known that for reflections corresponding to large interplanar spacings (i.e., sin θ/λ small), the electron scattering amplitude, f, is sensitive to the ionicity and to the charge distribution around the atoms. We have used this in order to obtain information about the charge distribution in FeTi, which is a candidate for storage of hydrogen. Our goal is to study the changes in electron distribution in the presence of hydrogen, and also the ionicity of hydrogen in metals, but so far our study has been limited to pure FeTi. FeTi has the CsCl structure and thus Fe and Ti scatter with a phase difference of π into the 100-ref lections. Because Fe (Z = 26) is higher in the periodic system than Ti (Z = 22), an immediate “guess” would be that Fe has a larger scattering amplitude than Ti. However, relativistic Hartree-Fock calculations show that the opposite is the case for the 100-reflection. An explanation for this may be sought in the stronger localization of the d-electrons of the first row transition elements when moving to the right in the periodic table. The tabulated difference between fTi (100) and ffe (100) is small, however, and based on the values of the scattering amplitude for isolated atoms, the kinematical intensity of the 100-reflection is only 5.10-4 of the intensity of the 200-reflection.

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