Erbium crystal structure

Daiguebonne, C. Kerbellec, N. Bernot, K. Gerault, Y. Deluzet, A. Guillou, O. Synthesis, Crystal Structure, and Porosity Estimation of Hydrated Erbium Terephthalate Coordination Polymers. Inorg Chem. 2006, 45, 5399-5406. 

Wenk, H.R. (1981) The crystal structures of yttrium, holmium and erbium formate dihydrates. Zeitschrift fuer Kristallographie, 154 (1-2), 137-145. 

Furmanova, N.G, Soboleva, L.V., Belov, N.V., and Belyaev, L.M. (1981) Crystal structure of erbium formate dihydrate. Isomorphism in a series of rare earth formate dihydrates. Kristallografiya, 26 (6), 1315-1317. 

Romanenko, GV., Podberezskaya, N.V., Bakakin, V.V., Sakharova, Y.G, and Bogodukhova, T.I. (1985) Crystal structure of tris(acetato)tris(urea)erbium(lll) monourea. Zhumal Struktumoi Khimii, 26 (5), 103-108. 

Figure 4.54 Structure of [Er(salen)2] [79a]. (Reproduced from Inorganica Chimica Acta, 155, S. Mangani, A. Takeuchi, S. Yamada and R Orioli, The crystal structure of the eight-coordinated erbium(III) complex with the tetradentate ligand N,N -ethylene-bis(salicylaldimine), 149, 1989, with permission from Elsevier.)...

Boeyens, J.C.A. and De VilUers, J.P.R. (1972) Crystal structure of the basic erbium tetramethylheptanedionate. Journal of Crystal and Molecular Structure, 24, 197-211. 

Song, L., Wang, Q., Tang, D., etal. (2007) Crystal structure and near-infrared luminescence properties of novel binuclear erbium and erbium-ytterbium cocrystalline complexes. New Journal of Chemistry, 31, 506. 

The materials derived from YBa2Cu307 by replacing yttrium with other rare earth elements (lutetium, ytterbium, thulium, erbium, hohnium, dysprosium, gadolinium, europium, samarium, neodymium, lanthanum) are also superconductors, with r, s of 88 to 96 K. The crystal structures of RBa2Cu307 are almost the same as those of YBa2Cu307. The lattice constant is slightly different for the different ionic radii of the rare earth elements, and yet their chemical and physical properties are almost the same as those of YBa2Cu307. 

The 5-nitro-2-anthranilates of lanthanum(III), samarium(III), terbium(III), erbium(III) and lutetium(III) were obtained as hydrates having 2.5 mol of water molecules per 1 mol of compound [167]. The compounds are isostructural. The processes of dehydration and rehydration were investigated. The first step of dehydration does not cause a change of crystal structure. The entire dehydration gives anhydrous compounds wifii different structures to the structures of hydrates. The dehydration of the La, Sm, Tb and Br compounds was reversible and rehydration gives complexes having the same crystal structures as the initial compounds. 

Erbium has a total of 11 electrons in its 4f shell. The crystal structure sequence hcp Sm-type dhcp dfcc seen in lanthanide metals with decreasing atomic number and increasing pressure is also observed in erbium. 

It can only be concluded, from the impact data tabulated in table 8.7, that all the rare earth metals have low fracture toughness in the as-cast condition. Although neodymium, holmium, and ytterbium have somewhat better impact properties than the other rare earth metals this is not explained by purity or crystal structure. Furthermore, the three metals (yttrium, dysprosium and erbium) tested at 477 K did not exhibit a strong tendency towards improved impact properties with increased test temperature. 

MgjR2(8104)3. This cubic garnet structure is stable only for smaller rare earths (Ho Lu, Y). The crystals prepared by Ito were too small for single crystal studies and therefore the exact structure is unknown. Andreev et al. (1975) have reported on triclinic Ca3R2SigOig (R = Er Lu) compounds but their exact structure is unknown. Ansell and Wanklyn (1975) have determined the crystal structure of monoclinic Er4PbSi40i7, which contains both Si30f,7 and 81201 groups. The erbium atoms are 6-coordinated. A similar structure has been found for dysprosium and yttrium (Wanklyn et al., 1975). 

Fig. 17. The crystal structure of erbium hypo-phosphite, Er(H2POj)3, projected on the yz-plane (Aslanov et al., 1975).

M. Mortier, P. Goldner, C. Chateau, M. GenoteUe, Erbium-doped glass-ceramics concentration effects on crystal structure and energy transfer between active ions, J. Alloys Comp. 323, 245-249 (2001). 

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