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Crystal structure of catena-poly[[tetra-aqua-magnesium]-μ-(di-hydrogen hypodiphosphato)-κ(2) O:O'].

Gjikaj M, Haase M - Acta Crystallogr E Crystallogr Commun (2015)

Bottom Line: The crystal structure of the title compound, [Mg(H2P2O6)(H2O)4] n , is built up from (H2P2O6)(2-) anions bridging Mg(2+) cations into chains extending parallel to [011].The centrosymmetric (H2P2O6)(2-) anion has a staggered conformation whereby the tetra-valent phospho-rus atom is surrounded tetra-hedrally by three O atoms and by one symmetry-related P atom.A three-dimensional O-H⋯O hydrogen-bonded network of medium strength involving the P-OH group of the anion and the water mol-ecules is present.

View Article: PubMed Central - HTML - PubMed

Affiliation: Institute of Inorganic and Analytical Chemistry, Clausthal University of Technology, Paul-Ernst-Strasse 4, D-38678 Clausthal-Zellerfeld, Germany.

ABSTRACT
The crystal structure of the title compound, [Mg(H2P2O6)(H2O)4] n , is built up from (H2P2O6)(2-) anions bridging Mg(2+) cations into chains extending parallel to [011]. The Mg(2+) ion is located on an inversion centre and is octa-hedrally coordinated by the O atoms of two (H2P2O6)(2-) anions and four water mol-ecules. The centrosymmetric (H2P2O6)(2-) anion has a staggered conformation whereby the tetra-valent phospho-rus atom is surrounded tetra-hedrally by three O atoms and by one symmetry-related P atom. A three-dimensional O-H⋯O hydrogen-bonded network of medium strength involving the P-OH group of the anion and the water mol-ecules is present.

No MeSH data available.


Related in: MedlinePlus

The mol­ecular entities in the title compound with atom labels and displacement ellipsoids drawn at the 50% probability level. [Symmetry codes: (i) −x, −y + 1, −z; (ii) −x, −y + 2, −z + 1; (iii) x, y + 1, z + 1.]
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fig2: The mol­ecular entities in the title compound with atom labels and displacement ellipsoids drawn at the 50% probability level. [Symmetry codes: (i) −x, −y + 1, −z; (ii) −x, −y + 2, −z + 1; (iii) x, y + 1, z + 1.]

Mentions: The principal building units in the crystal structure of [Mg(H2P2O6)(H2O)4] are [MgO6] octa­hedra and (H2P2O6)2− anions, forming chains extending parallel to [011] (Fig. 1 ▸). In the chains, each Mg2+ cation is bridged by two anions (Fig. 2 ▸). The Mg2+ ion is located on an inversion centre and is octa­hedrally coordinated by two (H2P2O6)2− anions and by four water mol­ecules with Mg—O bond lengths ranging from 2.0580 (17) to 2.0646 (18) Å. In the (H2P2O6)2− anion, which is located about an inversion centre and has a staggered conformation, the tetra­valent P atom is surrounded by three O atoms and one symmetry-related P atom with a P—P distance of 2.1843 (12) Å and P—O distances ranging from 1.5013 (16) to 1.5855 (16) Å. All bond lengths and angles of the hypodiphosphate anion are well within the expected ranges (Szafranowska et al., 2012 ▸; Gjikaj et al., 2014 ▸) and are comparable to those found for M2P2O6·12H2O (M = Co and Ni; Hagen & Jansen, 1995 ▸; Haag et al., 2005 ▸).


Crystal structure of catena-poly[[tetra-aqua-magnesium]-μ-(di-hydrogen hypodiphosphato)-κ(2) O:O'].

Gjikaj M, Haase M - Acta Crystallogr E Crystallogr Commun (2015)

The mol­ecular entities in the title compound with atom labels and displacement ellipsoids drawn at the 50% probability level. [Symmetry codes: (i) −x, −y + 1, −z; (ii) −x, −y + 2, −z + 1; (iii) x, y + 1, z + 1.]
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4518914&req=5

fig2: The mol­ecular entities in the title compound with atom labels and displacement ellipsoids drawn at the 50% probability level. [Symmetry codes: (i) −x, −y + 1, −z; (ii) −x, −y + 2, −z + 1; (iii) x, y + 1, z + 1.]
Mentions: The principal building units in the crystal structure of [Mg(H2P2O6)(H2O)4] are [MgO6] octa­hedra and (H2P2O6)2− anions, forming chains extending parallel to [011] (Fig. 1 ▸). In the chains, each Mg2+ cation is bridged by two anions (Fig. 2 ▸). The Mg2+ ion is located on an inversion centre and is octa­hedrally coordinated by two (H2P2O6)2− anions and by four water mol­ecules with Mg—O bond lengths ranging from 2.0580 (17) to 2.0646 (18) Å. In the (H2P2O6)2− anion, which is located about an inversion centre and has a staggered conformation, the tetra­valent P atom is surrounded by three O atoms and one symmetry-related P atom with a P—P distance of 2.1843 (12) Å and P—O distances ranging from 1.5013 (16) to 1.5855 (16) Å. All bond lengths and angles of the hypodiphosphate anion are well within the expected ranges (Szafranowska et al., 2012 ▸; Gjikaj et al., 2014 ▸) and are comparable to those found for M2P2O6·12H2O (M = Co and Ni; Hagen & Jansen, 1995 ▸; Haag et al., 2005 ▸).

Bottom Line: The crystal structure of the title compound, [Mg(H2P2O6)(H2O)4] n , is built up from (H2P2O6)(2-) anions bridging Mg(2+) cations into chains extending parallel to [011].The centrosymmetric (H2P2O6)(2-) anion has a staggered conformation whereby the tetra-valent phospho-rus atom is surrounded tetra-hedrally by three O atoms and by one symmetry-related P atom.A three-dimensional O-H⋯O hydrogen-bonded network of medium strength involving the P-OH group of the anion and the water mol-ecules is present.

View Article: PubMed Central - HTML - PubMed

Affiliation: Institute of Inorganic and Analytical Chemistry, Clausthal University of Technology, Paul-Ernst-Strasse 4, D-38678 Clausthal-Zellerfeld, Germany.

ABSTRACT
The crystal structure of the title compound, [Mg(H2P2O6)(H2O)4] n , is built up from (H2P2O6)(2-) anions bridging Mg(2+) cations into chains extending parallel to [011]. The Mg(2+) ion is located on an inversion centre and is octa-hedrally coordinated by the O atoms of two (H2P2O6)(2-) anions and four water mol-ecules. The centrosymmetric (H2P2O6)(2-) anion has a staggered conformation whereby the tetra-valent phospho-rus atom is surrounded tetra-hedrally by three O atoms and by one symmetry-related P atom. A three-dimensional O-H⋯O hydrogen-bonded network of medium strength involving the P-OH group of the anion and the water mol-ecules is present.

No MeSH data available.


Related in: MedlinePlus