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“…In the structure, the W1, Ag1 and Rb3a atoms are located in fourfold special positions with point symmetry mm2, mm2 and 2/m, respectively; W2, W3, Rb3b, Rb3c, Rb3d, Ag2, Sc, O1, O2 and O4-O7 atoms lie at mirror planes, and the remaining atoms are in the 16-fold general positions. The W atoms have a common distorted tetrahedral coordination with W-O distances of 1.735 (3) to 1.801 (3) Å , which are close to those in the structures Sc 2 (WO 4 ) 3 (Balamurugan et al, 2010) (Balamurugan et al, 2010), Na 9 Sc(MoO 4 ) 6 (Savina et al, 2013), (NH 4 ) 3 Sc(SeO 4 ) 3 (Valkonen & Niinistö, 1978), Rb 3 Sc 2 (AsO 4 ) 3 (Harrison et al, 1998), and Na 3 Sc 2 (AsO 4 ) 3 (Harrison & Phillips, 2001). The Ag1 and Ag2 atoms have a twofold coordination close to linear with Ag1-O4 2.134 (4) Å (Â2), Ag2-O11 2.174 (4) Å (Â2) and corresponding angles O-Ag-O 175.6 (3) and 170.0 (2) .…”
Section: Structure Detailssupporting
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“…In the structure, the W1, Ag1 and Rb3a atoms are located in fourfold special positions with point symmetry mm2, mm2 and 2/m, respectively; W2, W3, Rb3b, Rb3c, Rb3d, Ag2, Sc, O1, O2 and O4-O7 atoms lie at mirror planes, and the remaining atoms are in the 16-fold general positions. The W atoms have a common distorted tetrahedral coordination with W-O distances of 1.735 (3) to 1.801 (3) Å , which are close to those in the structures Sc 2 (WO 4 ) 3 (Balamurugan et al, 2010) (Balamurugan et al, 2010), Na 9 Sc(MoO 4 ) 6 (Savina et al, 2013), (NH 4 ) 3 Sc(SeO 4 ) 3 (Valkonen & Niinistö, 1978), Rb 3 Sc 2 (AsO 4 ) 3 (Harrison et al, 1998), and Na 3 Sc 2 (AsO 4 ) 3 (Harrison & Phillips, 2001). The Ag1 and Ag2 atoms have a twofold coordination close to linear with Ag1-O4 2.134 (4) Å (Â2), Ag2-O11 2.174 (4) Å (Â2) and corresponding angles O-Ag-O 175.6 (3) and 170.0 (2) .…”
Section: Structure Detailssupporting
“…The (NH 4 ) 3 [Sc(SO 4 ) 3 ] composition is confirmed by both elemental analysis (Table 3) and the absence of absorption bands of water molecules in the IR spec- We failed to obtain X-ray diffraction data for compound III. However, it is known [6] that the structure of the selenate analog (NH 4 ) 3 [Sc(SeO 4 ) 3 ] (V) contains SeO-Sc-OSe chains, and each scandium atom is linked with six selenate groups. Similar chains were found in the structure (C(NH 2 ) 3 ) 3 Thus, based on the known data, we can state that the supramolecular architecture involving the polymeric fragments of scandium sulfates is mainly determined by the nature of structure-forming amines, their basicity, steric volume, and a potentiality to form hydrogen bonds.…”
Section: Resultsmentioning
“…It has been found previously [1] that in compounds ( C ( NH 2 ) 3 ) 3 [ Sc ( SO 4 ) 3 ] · 3 H 2 O and ( H 3 N ( CH 2 ) 6 NH 3 )[ Sc ( H 2 O ) 2 ( SO 4 ) 2 ] 2 · 2 H 2 O, the composition and structure of polymeric anionic chains of scandium sulfate are determined by the nature of the organic cation.…”
Section: Introductionmentioning
“…Eight of the 14 atoms in Table S39 determined by Valkonen & Niinistö (1978) are closely related in pairs by the super-research papers group R3c symmetry, with 0.01 < Á < 0.35 Å for Se, Sc, O1 and O7, and with Á(O3, O4) ' 0.9 Å . The remaining four O and two N atoms, however, have 1.70 < Á < 2.15 Å , a range that exceeds the displacement criteria in x1.2 which are well satisfied by the former eight atoms.…”
Section: (Nh 4 ) 3 Sc(seo 4 )mentioning