Selten-Erd-Hydrogensulfate M(HSO4)3 (M = La, Ce-Nd): Derivate des UCl3-Typs

Wickleder, Ma­thias S.

doi:10.1002/(sici)1521-3749(199810)624:10<1583::aid-zaac1583>3.0.co;2-q

Cited by 23 publications

(16 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Obviously the additional possibility of hydrogen bonding in the latter compound has no influence on the crystal structure. Similarly, isotypic crystal structures had been found for the anhydrous hydrogensulfates M(HSO 4 ) 3 (M = La, Ce±Eu) [13] and the per- with a Sc 3+ ±Sc 3+ distance of 320 pm (Fig. 4, Tab.…”

Section: Introductionsupporting

confidence: 64%

Perchlorato Complexes of Rare-Earth Elements: Syntheses and Crystal Structures of Lu(ClO4)3 · 3 H2O, Er(ClO4)3 · H2O, and Sc(OH)(ClO4)2 · H2O

Wickleder

1999

Z. anorg. allg. Chem.

Self Cite

View full text Add to dashboard Cite

Single crystals of Lu(ClO4)3 · 3 H2O were obtained by slow dehydration of Lu(ClO4)3 · 6 H2O at 140 °C under flowing argon. The compound crystallizes in the triclinic crystal system (P1, Z = 2, a = 750.3(1), b = 838.4(1), c = 1054.6(2) pm, α = 79.77(2)°, β = 79.18(2), γ = 63.83(2), Rall = 0.0426) with Lu3+ eightfold coordinated by oxygen atoms, which belong to five ClO4– groups and three H2O molecules. The [LuO8] polyhedra and ClO4– groups are connected to form chains which are held together only via hydrogen bridges. Er(ClO4)3 · H2O can also be prepared by dehydration of the respective hexahydrate but only at higher temperature and under vacuum. The triclinic compound (P1, Z = 2, a = 678.31(9), b = 783.4(1), c = 955.9(1) pm, α = 77.29(1)°, β = 75.71(1)°, γ = 78.31(1)°, Rall = 0.0292) contains Er3+ ions which are coordinated by seven ClO4– groups and one H2O molecule. The linkage of the [ErO8] polyhedra and ClO4– tetrahedra results in a three‐dimensional network. Attempts to dehydrate Sc(ClO4)3 · 6 H2O led to the basic perchlorate Sc(OH)(ClO4)2 · H2O. In the monoclinic structure (P21/n, Z = 4, a = 942.8(1), b = 735.16(8), c = 1157.9(2) pm, β = 93.76(2)°, Rall = 0.0579), Sc3+ is surrounded by six oxygen atoms which belong to three ClO4– ions, two OH– groups and one H2O molecule. These octahedra are connected via common edges which are formed by the OH– groups to pairs according to [Sc2(OH)2(ClO4)6(H2O)2]2–. Four of the six ClO4– groups link the pairs to two‐dimensional infinite sheets, which are held together via hydrogen bonds.

show abstract

Section: Introductionsupporting

confidence: 64%

Perchlorato Complexes of Rare-Earth Elements: Syntheses and Crystal Structures of Lu(ClO4)3 · 3 H2O, Er(ClO4)3 · H2O, and Sc(OH)(ClO4)2 · H2O

Wickleder

1999

Z. anorg. allg. Chem.

Self Cite

View full text Add to dashboard Cite

show abstract

“…For Pr(ClO 4 ) 3 integrated intensities of the reflections collected were obtained using the program packages CSD and WinCSD [8], respectively. With the same program a full profile Rietveld refinement has been carried out starting with the atomic positions of Pr(HSO 4 ) 3 [5] (Fig. 1).…”

Section: Methodsmentioning

confidence: 99%

“…Unfortunately, both routes lead to powder samples only so that a structure determination was not possible up to date. Based on single crystal data that became available quite recently for the hydrogensulfates M(HSO 4 ) 3 (M = La, Ce±Nd) [5] we were now able to determine the structure of the anhydrous perchlorates with M = La, Ce±Er, Y.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Structure of Anhydrous Rare-Earth Perchlorates M(ClO4)3 (M = La, Ce-Er, Y): Derivatives of the UCl3 Type of Structure

Wickleder

Schäfer

1999

Z. anorg. allg. Chem.

Self Cite

View full text Add to dashboard Cite

Anhydrous perchlorates M(ClO4)3 (M = La, Ce–Er, Y) were obtained by drying the products formed in the reaction of the respective lanthanide oxide with perchloric acid (70%). According to X‐ray powder investigations, they all crystallize with the hexagonal space group P63/m isostructural with the hydrogensulfates of the lighter lanthanides. For the example of Pr(ClO4)3 a full profile Rietveld refinement based on X‐ray powder data has been undertaken successfully (a = 933.61(3) pm, c = 584.88(2) pm; Rp = 0.207, RBragg = 0.068). The structure of Er(ClO4)3 was refined from neutron diffraction data (a = 919.7(1) pm, c = 559.8(1) pm; Rp = 0.190, RBragg = 0.106). High temperature X‐ray powder investigations show that thermal expansion occurs mainly in the (001) plane while the c axis remains nearly constant.

show abstract

“…In addition, Na, K and Ag cations are located in the wide channels around the 6 3 axes in the crystal structures of addition/substitution derivatives of the UCl 3 type (Wickleder & Meyer, 1998). [HOSO 3 ] À tetrahedra replace the anions of the UCl 3 type in hydrogensulfates of rare-earth elements M(HSO 4 ) 3 (M = La, Ce±Nd) (Wickleder, 1998). The sulfur atoms ful®l the sphere-packing condition for type 8/3/h14 to good approximation.…”

Section: Figurementioning

confidence: 99%

Hexagonal and trigonal sphere packings. II. Bivariant lattice complexes

Sowa

Koch

2004

Acta Cryst Sect A

View full text Add to dashboard Cite

All homogeneous sphere packings were derived which correspond to point configurations of the 26 bivariant lattice complexes belonging to the hexagonal crystal family. They may be assigned to 109 sphere-packing types. Among these, there is a type of sphere packing with contact number 10 that was not described before. For seven of the 109 types, the inherent symmetry of the sphere packings with minimal density is cubic. In addition, three types of interpenetrating sphere packings were found and one type of interpenetrating 6(3) sphere layers. Such an arrangement was unknown so far. Some frequently occurring structure types that can be related to sphere packings are described as examples.

show abstract

Selten-Erd-Hydrogensulfate M(HSO4)3 (M = La, Ce-Nd): Derivate des UCl3-Typs

Cited by 23 publications

References 6 publications

Perchlorato Complexes of Rare-Earth Elements: Syntheses and Crystal Structures of Lu(ClO4)3 · 3 H2O, Er(ClO4)3 · H2O, and Sc(OH)(ClO4)2 · H2O

Perchlorato Complexes of Rare-Earth Elements: Syntheses and Crystal Structures of Lu(ClO4)3 · 3 H2O, Er(ClO4)3 · H2O, and Sc(OH)(ClO4)2 · H2O

Synthesis and Structure of Anhydrous Rare-Earth Perchlorates M(ClO4)3 (M = La, Ce-Er, Y): Derivatives of the UCl3 Type of Structure

Hexagonal and trigonal sphere packings. II. Bivariant lattice complexes

Contact Info

Product

Resources

About