Rare earth crystallographic data

Table 6. Crystallographic data of rare earth metals [160, 166—174]...

Crystallographic data of the binary antimonides of rare earth are listed in table 1. 

TABLE 1 Crystallographic data for ternary rare-earth transition metal-plumbides. If listed in the literature, standard deviations are given in parentheses... 

During the early 1970s researchers at Bell Laboratories studied these salts, both hydrated and anhydrous, because of their interest in the electrical, magnetic, and structural properties of the compounds. Syntheses were also studied and the results were compared with previously published results.82 83 Densities of all the anhydrous rare-earth iodates, derived from crystallographic data,83a are listed in Table 9.20. Extensive crystallographic data of these salts are also provided, as is a comparison with previous work cited in our earlier publication.2... 

The crystallographic ionic radii of the rare-earth elements in oxidation states +2 (CN = 6), +3 (CN = 6), and +4 (CN = 6) are presented in Table 18.1.3. The data provide a set of conventional size parameters for the calculation of hydration energies. It should be noted that in most lanthanide(III) complexes the Ln3+ center is surrounded by eight or more ligands, and that in aqueous solution the primary coordination sphere has eight and nine aqua ligands for light and heavy Ln3+ ions, respectively. The crystal radii of Ln3+ ions with CN = 8 are listed in Table 18.1.1. 

TABLE 1 Crystallographic data for ternary rare earth silicon chalcogenides... 

The structural information of the rare-earth /1-diketonates is of crucial importance in the evaluation of their luminescence properties. More than two hundred crystal structures of RE + S-diketonates determined by single crystal X-ray diffraction (XRD) have been reported in the literature and deposited in the database of the Cambridge Crystallographic Data Center. In addition, theoretical methods have been used to predict the structures of diketonate compounds. Among them, the SMLC/AMl method " has been successfully used in the determination of coordination geometries from calculations on the isolated single RE diketonate complex. ... 

Apart from the data already discussed for salts of the 3d transition metal ions, significant bonding information has otherwise been obtained only for a few rare earth ions. The magnetic and crystallographic properties of many 4d and 5d... 

TABLE 3. Crystallographic Data for Rare Earth Metals at High Temperature... 

TABLE 2. Crystallographic Data for the Rare Earth Metals at 24 C (297 K) or Below... 

Buschow, 1980). The crystallographic data of most binary, ternary, and quaternary rare earth phases have been compiled (Gladyshevskii and Bodak, 1982). The rare earth intermetallics are mostly line compounds and have only very narrow composition ranges. Preparation of the phases is difficult because of the high affinity of the rare earths for oxygen, which leads to reactions with common crucible materials, and various processes have been developed for the preparation of the intermetallic rare earth phases (Herget and Domazer, 1975). 

Crystallographic data have been reported for the tetragonal rare-earth borides RCogBg (where R = La, Nd, Sm, Gd, Tb, Dy, and Y). The La and Y compounds crystallize in the ThCrgSig-type structure. ... 

TABLE 3-2. Crystallographic data of intermediate rare earth oxides. All structures have been solved using neutron powder diffraction. 

Crystallographic data of binary rare earth fluorides with mixed valency... 

Crystallographic data for rare earth metal compounds with discrete clusters. 

Crystallographic data of metal-rich rare earth halides with one-dimensional infinite chains. 

Crystallographic data of metal-rich rare earth halides with structures derived from GdjCla. Calculated with the atomic parameters of (a) Gd2Cl3, (b) a-GdjCljN, (c) P-YjCljN,. 

Crystallographic data of rare earth hydride halides RXHj (x sS 1.00) and RXHj D positions have been determined only for TbClDo TbBrDo gg and TbBrDj,... 

Crystallographic data, bonding distances and angles in bis(trimethylsilyl)cyclopentadienyl rare earth complexes Cp = (Me3Si)2C5H3. 

Crystallographic data, bond distances and angles in dicyclopentadienyl rare earths methyl compounds. 

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