Yttrium thermodynamic propertie

Using the same procedure, spherical nanosize particles of hematite were coated with yttrium basic carbonate and showed that various surface thermodynamic properties of these systems were essentially those of yttria (37). 

Experimental thermodynamic information is not available on solid yttrium selenides, but Mills [74M1L] has estimated thermodynamic properties for YSe(cr) and Y2Se3(cr) by comparison with the yttrium sulphides and lanthanum selenides. No values for solid selenides were selected by the review. 

Thermodynamic properties of yttrium, lanthanum and the lanthanide elements and ions. L. R. Morss, Chem. Rev., 1976,76,827-841 (149). 

Selected Values of the Thermodynamic Properties of Scandium, Yttrium, and the Lanthanide Elements... 

Scandium, yttrium, and the lanthanides represent 17% of all of the elements that can be obtained in coherent form. In view of their similar chemical behavior separation of these elements proved to be formidable (Szabadvary, 1988) but all of the metals have now been obtained in relatively high purity and, except for promethium, their thermodynamic properties have been measured with varying degrees of quality. Based on the interpolation of the properties of neighboring elements, it has also been possible to estimate the thermodynamic properties of promethium in order to complete this review. Because of the radioactive nature of this element and the fact that the most stable isotope has half-life of only 17.7 years, it is unlikely that further measurements will be carried out beyond the very basic properties which have already been determined. 

CHAPTER 258. SELECTED VALUES OF THE THERMODYNAMIC PROPERTIES OF SCANDIUM, YTTRIUM, AND THE LANTHANIDE ELEMENTS... 

The lanthanide and actinide halides remain an exceedingly active area of research since 1980 they have been cited in well over 2500 Chemical Abstracts references, with the majority relating to the lanthanides. Lanthanide and actinide halide chemistry has also been reviewed numerous times. The binary lanthanide chlorides, bromides, and iodides were reviewed in this series (Haschke 1979). In that review, which included trihalides (RX3), tetrahalides (RX4), and reduced halides (RX , n < 3), preparative procedures, structural interrelationships, and thermodynamic properties were discussed. Hydrated halides and mixed metal halides were discussed to a lesser extent. The synthesis of scandium, yttrium and the lanthanide trihalides, RX3, where X = F, Cl, Br, and I, with emphasis on the halide hydrates, solution chemistry, and aspects related to enthalpies of solution, were reviewed by Burgess and Kijowski (1981). The binary lanthanide fluorides and mixed fluoride systems, AF — RF3 and AFj — RF3, where A represents the group 1 and group 2 cations, were reviewed in a subsequent Handbook (Greis and Haschke 1982). That review emphasized the close relationship of the structures of these compounds to that of fluorite. 

John W. Arblaster, Selected values of the thermodynamic properties of scandium, yttrium, and the lanthanide elements 321 Author index 567 Subject index 591... 

This review will be limited to certain thermodynamic properties of gaseous species of the elements yttrium, scandium, and lanthanum to lutetium. The dissociation enthalpies and enthalpies of formation are the two quantities which are evaluated and tabulated for all the species considered here. There have been two recent reviews by Gingerich (1980a, 1985) on this subject and should be referred to for literature references. In this review, the values reported in the literature have been recalculated in a large number of cases using newer data for reference systems. 

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