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Crystal structure of Pb3(IO4(OH)2)2.

Weil M - Acta Crystallogr Sect E Struct Rep Online (2014)

Bottom Line: Each of the Pb(2+) cations is surrounded by eight O atoms (cut-off value = 3.1 Å) in the form of a distorted polyhedron.The octa-hedral IO4(OH)2 (3-) anions are arranged in rows extending parallel to [021], forming a distorted hexa-gonal rod packing.The cations and anions are linked into a framework structure.

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Affiliation: Institute for Chemical Technologies and Analytics, Division of Structural Chemistry, Vienna University of Technology, Getreidemarkt 9/164-SC, A-1060 Vienna, Austria.

ABSTRACT
The structure of the title compound, trilead(II) bis-[di-hydroxido-tetra-oxido-iodate(VII)], was determined from a crystal twinned by non-merohedry with two twin domains present [twin fraction 0.73 (1):0.27 (1)]. It contains three Pb(2+) cations and two IO4(OH)2 (3-) anions in the asymmetric unit. Each of the Pb(2+) cations is surrounded by eight O atoms (cut-off value = 3.1 Å) in the form of a distorted polyhedron. The octa-hedral IO4(OH)2 (3-) anions are arranged in rows extending parallel to [021], forming a distorted hexa-gonal rod packing. The cations and anions are linked into a framework structure. Although H-atom positions could not be located, O⋯O distances suggest medium-strength hydrogen-bonding inter-actions between the IO4(OH)2 octa-hedra, further consolidating the crystal packing.

No MeSH data available.


The crystal structure of Hg3(IO4(OH)2)2 (Mormann & Jeitschko, 2000a ▶) in a projection along [011]. Colour code as in Fig. 1 ▶. Hg—O and O—H⋯O inter­actions are omitted for clarity.
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fig3: The crystal structure of Hg3(IO4(OH)2)2 (Mormann & Jeitschko, 2000a ▶) in a projection along [011]. Colour code as in Fig. 1 ▶. Hg—O and O—H⋯O inter­actions are omitted for clarity.

Mentions: Comparison of the structures of Pb3(IO4(OH)2)2 and of Hg3(IO4(OH)2)2 [P21/c; Z = 4, a = 8.5429 (7), b = 12.2051 (8) Å, c = 9.3549 (8) Å, β = 90.884 (7)°] reveals some close similarities. A ‘true’ isotypic relationship (Lima-de-Faria et al., 1990 ▶) is difficult to derive for the two structures. However, they are isopointal and show the same type of arrangement in terms of the crystal packing. In the mercury compound, the IO4(OH)23− octa­hedra are likewise hexa­gonally packed in rods (Fig. 3 ▶). The cations are situated in between this arrangement which is further consolidated by O—H⋯O hydrogen bonding.


Crystal structure of Pb3(IO4(OH)2)2.

Weil M - Acta Crystallogr Sect E Struct Rep Online (2014)

The crystal structure of Hg3(IO4(OH)2)2 (Mormann & Jeitschko, 2000a ▶) in a projection along [011]. Colour code as in Fig. 1 ▶. Hg—O and O—H⋯O inter­actions are omitted for clarity.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4120626&req=5

fig3: The crystal structure of Hg3(IO4(OH)2)2 (Mormann & Jeitschko, 2000a ▶) in a projection along [011]. Colour code as in Fig. 1 ▶. Hg—O and O—H⋯O inter­actions are omitted for clarity.
Mentions: Comparison of the structures of Pb3(IO4(OH)2)2 and of Hg3(IO4(OH)2)2 [P21/c; Z = 4, a = 8.5429 (7), b = 12.2051 (8) Å, c = 9.3549 (8) Å, β = 90.884 (7)°] reveals some close similarities. A ‘true’ isotypic relationship (Lima-de-Faria et al., 1990 ▶) is difficult to derive for the two structures. However, they are isopointal and show the same type of arrangement in terms of the crystal packing. In the mercury compound, the IO4(OH)23− octa­hedra are likewise hexa­gonally packed in rods (Fig. 3 ▶). The cations are situated in between this arrangement which is further consolidated by O—H⋯O hydrogen bonding.

Bottom Line: Each of the Pb(2+) cations is surrounded by eight O atoms (cut-off value = 3.1 Å) in the form of a distorted polyhedron.The octa-hedral IO4(OH)2 (3-) anions are arranged in rows extending parallel to [021], forming a distorted hexa-gonal rod packing.The cations and anions are linked into a framework structure.

View Article: PubMed Central - HTML - PubMed

Affiliation: Institute for Chemical Technologies and Analytics, Division of Structural Chemistry, Vienna University of Technology, Getreidemarkt 9/164-SC, A-1060 Vienna, Austria.

ABSTRACT
The structure of the title compound, trilead(II) bis-[di-hydroxido-tetra-oxido-iodate(VII)], was determined from a crystal twinned by non-merohedry with two twin domains present [twin fraction 0.73 (1):0.27 (1)]. It contains three Pb(2+) cations and two IO4(OH)2 (3-) anions in the asymmetric unit. Each of the Pb(2+) cations is surrounded by eight O atoms (cut-off value = 3.1 Å) in the form of a distorted polyhedron. The octa-hedral IO4(OH)2 (3-) anions are arranged in rows extending parallel to [021], forming a distorted hexa-gonal rod packing. The cations and anions are linked into a framework structure. Although H-atom positions could not be located, O⋯O distances suggest medium-strength hydrogen-bonding inter-actions between the IO4(OH)2 octa-hedra, further consolidating the crystal packing.

No MeSH data available.