In:
Acta Crystallographica Section E Structure Reports Online, International Union of Crystallography (IUCr), Vol. 70, No. 12 ( 2014-12-15), p. 510-514
Kurzfassung:
The title compounds, strontium perchlorate trihydrate {di-μ-aqua-aquadi-μ-perchlorato-strontium, [Sr(ClO 4 ) 2 (H 2 O) 3 ] n }, strontium perchlorate tetrahydrate {di-μ-aqua-bis(triaquadiperchloratostrontium), [Sr 2 (ClO 4 ) 4 (H 2 O) 8 ]} and strontium perchlorate nonahydrate {heptaaquadiperchloratostrontium dihydrate, [Sr(ClO 4 ) 2 (H 2 O) 7 ]·2H 2 O}, were crystallized at low temperatures according to the solid–liquid phase diagram. The structures of the tri- and tetrahydrate consist of Sr 2+ cations coordinated by five water molecules and four O atoms of four perchlorate tetrahedra in a distorted tricapped trigonal–prismatic coordination mode. The asymmetric unit of the trihydrate contains two formula units. Two [SrO 9 ] polyhedra in the trihydrate are connected by sharing water molecules and thus forming chains parallel to [100] . In the tetrahydrate, dimers of two [SrO 9 ] polyhedra connected by two sharing water molecules are formed. The structure of the nonahydrate contains one Sr 2+ cation coordinated by seven water molecules and by two O atoms of two perchlorate tetrahedra (point group symmetry .. m ), forming a tricapped trigonal prism (point group symmetry m 2 m ). The structure contains additional non-coordinating water molecules, which are located on twofold rotation axes. O—H...O hydrogen bonds between the water molecules as donor and ClO 4 tetrahedra and water molecules as acceptor groups lead to the formation of a three-dimensional network in each of the three structures.
Materialart:
Online-Ressource
ISSN:
1600-5368
DOI:
10.1107/S1600536814024726
DOI:
10.1107/S1600536814024726/wm5080sup1.cif
DOI:
10.1107/S1600536814024726/wm5080sup0.html
DOI:
10.1107/S1600536814024726/wm5080SrClO4_3H2O_100Ksup2.hkl
DOI:
10.1107/S1600536814024726/wm5080SrClO4_4H2O_150Ksup3.hkl
DOI:
10.1107/S1600536814024726/wm5080SrClO4_9H2O_100Ksup4.hkl
DOI:
10.1107/S1600536814024726/wm5080SrClO4_3H2O_100Ksup5.cml
DOI:
10.1107/S1600536814024726/wm5080SrClO4_4H2O_150Ksup6.cml
DOI:
10.1107/S1600536814024726/wm5080SrClO4_9H2O_100Ksup7.cml
Sprache:
Unbekannt
Verlag:
International Union of Crystallography (IUCr)
Publikationsdatum:
2014
ZDB Id:
2843762-7
ZDB Id:
2041947-8
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