Sublimation enthalpy of tetrakis(1,1,1,5,5,5-hexafluoro-2,4-pentanedionato)lanthanide(III)-potassium complexes, KLn(C5HF6O2)4: Effect of lanthanide contraction

2019 ◽  
Vol 131 ◽  
pp. 117-121 ◽  
Author(s):  
Aleksey E. Khochenkov ◽  
Natalya V. Belova ◽  
Alexander V. Krasnov ◽  
Yuriy A. Zhabanov ◽  
Nina I. Giricheva ◽  
...  
Keyword(s):  
Sublimation Enthalpy ◽  
Lanthanide Contraction

Bond-length distributions for ions bonded to oxygen: Results for the lanthanides and actinides and discussion of the f-block contraction

2017 ◽  
Author(s):  
Olivier Charles Gagné
Keyword(s):  
Bond Length ◽  
Coordination Number ◽  
Lanthanide Ions ◽  
Lanthanide Contraction ◽  
Trivalent Lanthanide ◽  
Actinide Ions

Bond-length distributions have been examined for eighty-four configurations of the lanthanide ions and twenty-two configurations of the actinide ions bonded to oxygen. The lanthanide contraction for the trivalent lanthanide ions bonded to O<sup>2-</sup> is shown to vary as a function of coordination number and to diminish in scale with increasing coordination number.

Porous Frameworks Based on Carborane-Ln2(CO2)6: Architecture Influenced by Lanthanide Contraction and Selective CO2 Capture

ChemPlusChem ◽  
2012 ◽  
Vol 77 (2) ◽  
pp. 141-147 ◽  
Author(s):  
Sheng-Li Huang ◽  
Yue-Jian Lin ◽  
Wei-Bin Yu ◽  
Guo-Xin Jin
Keyword(s):  
Co2 Capture ◽  
Lanthanide Contraction

Coordination complexes based on pentacyclohexanocucurbit[5]uril and lanthanide(iii) ions: lanthanide contraction effect induced structural variation

CrystEngComm ◽  
2012 ◽  
Vol 14 (20) ◽  
pp. 6983 ◽  
Author(s):  
Jing-Xin Liu ◽  
Ying-Feng Hu ◽  
Rui-Lian Lin ◽  
Wen-Qi Sun ◽  
Xiang-Feng Chu ◽  
...  
Keyword(s):  
Structural Variation ◽  
Coordination Complexes ◽  
Lanthanide Contraction ◽  
Contraction Effect

scholarly journals A group contribution model for determining the sublimation enthalpy of organic compounds at the standard reference temperature of 298K

2013 ◽  
Vol 354 ◽  
pp. 265-285 ◽  
Author(s):  
Farhad Gharagheizi ◽  
Poorandokht Ilani-Kashkouli ◽  
William E. Acree ◽  
Amir H. Mohammadi ◽  
Deresh Ramjugernath
Keyword(s):  
Organic Compounds ◽  
Group Contribution ◽  
Reference Temperature ◽  
Sublimation Enthalpy ◽  
Group Contribution Model

Characterization of the extracted complexes of trivalent lanthanides with purified cyanex 301 in comparison with trivalent actinide complexes

2014 ◽  
Vol 43 (46) ◽  
pp. 17352-17357 ◽  
Author(s):  
Xihong He ◽  
Guoxin Tian ◽  
Jing Chen ◽  
Linfeng Rao
Keyword(s):  
Trivalent Lanthanides ◽  
Lanthanide Series ◽  
Lanthanide Contraction ◽  
Cyanex 301 ◽  
Trivalent Actinide

Dialkyldithiophosphinate forms different extracted Ln(iii) complexes across the lanthanide series not following the trend of lanthanide contraction.

scholarly journals Lanthanide(III)/Pyrimidine-4,6-dicarboxylate/Oxalate Extended Frameworks: A Detailed Study Based on the Lanthanide Contraction and Temperature Effects

2011 ◽  
Vol 50 (17) ◽  
pp. 8437-8451 ◽  
Author(s):  
Javier Cepeda ◽  
Rolindes Balda ◽  
Garikoitz Beobide ◽  
Oscar Castillo ◽  
Joaquín Fernández ◽  
...  
Keyword(s):  
Temperature Effects ◽  
Lanthanide Contraction

scholarly journals Experimental and Theoretical Study of the Enthalpy of Formation of 3,6-Diphenyl-1,2,4,5-Tetroxane Molecule

2002 ◽  
Vol 2 ◽  
pp. 455-460 ◽  
Author(s):  
N.L. Jorge ◽  
L.C.A. Leiva ◽  
M.G. Castellanos ◽  
M.E. Gomez Vara ◽  
L.F.R. Cafferata ◽  
...  
Keyword(s):  
Vapor Pressure ◽  
Enthalpy Of Formation ◽  
Vapor Phase ◽  
Theoretical Study ◽  
Theoretical Calculations ◽  
Basis Set ◽  
Sublimation Enthalpy ◽  
Combustion Heat ◽  
Different Temperatures ◽  
The Enthalpy Of Formation

We report the results obtained for the experimental determination and the theoretical calculation of the enthalpy of formation of 3,6-diphenyl-1,2,4,5-tetroxane molecule. The experimental work was performed using a macrocalorimeter to measure the combustion heat, and the sublimation enthalpy was determined via the measurement of the vapor pressure at equilibrium with the vapor phase at different temperatures resorting to the Clapeyron-Claussius equation. Theoretical calculations were performed using semiempirical AM1 and PM3 methods as well asab initiotechniques at the 3-21, 6-31G(d,p), and 6-311G(d,p) basis set levels.

scholarly journals Determination of crystallization enthalpies of some organic peroxides by a differential isothermal calorimeter

2021 ◽  
pp. 90-94
Keyword(s):  
Supercooled Liquids ◽  
Sublimation Enthalpy ◽  
Residual Pressure ◽  
Heat Conducting ◽  
Dicumyl Peroxide ◽  
Organic Substances ◽  
Fusion Temperature ◽  
The Difference ◽  
Isothermal Calorimeter

We developed a method for determination of the crystallization enthalpy of organic substances in a heat-conducting calorimeter at a temperature close to 298 K. Crystallization was conducted in the MID-200 calorimeter using an ampoule technique. The volume of ampoules, which contain the supercooled liquids, was approximately 0.2 cm3. The residual pressure was 650 Pa to lessen the heat loss. A few crystals of the material under investigation were employed as the crystallization centers. Based on the results of the experiment, the crystallization enthalpies of dicumyl peroxide, peroxyoctanoic acid and di-tert-butylperoxy isophthalate were determined. The vaporization and sublimation enthalpies of peroxyoctanoic acid were assessed using an ampoule method in the calorimeter. It was established that dicumyl peroxide which was supercooled 14 K below the fusion temperature exhibited a 20% increase in crystallization enthalpy as compared with that calculated from the difference between vaporization and sublimation enthalpy. At the same time, the crystallization enthalpy of peroxyoctanoic acid supercooled by 5 K was equal to that calculated from the difference between vaporization and sublimation enthalpy within the limiting experimental error. The received data show that the proposed method is promising for determining the heat of crystallization of liquids that are able to exist in a supercooled state during some time.

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