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Crystal structure of bis-(di-methyl-ammonium) hexa-aqua-nickel(II) bis-(sulfate) dihydrate.

Held P - Acta Crystallogr Sect E Struct Rep Online (2014)

Bottom Line: In the title salt, (C2H8N)2[Ni(H2O)6)](SO4)2·2H2O, the Ni(II) cation is located on a centre of inversion and exhibits a slightly distorted octa-hedral arrangement of water mol-ecules.The Ni-O bond lengths in the complex [Ni(H2O)6](2+) cation show a distribution as in the related Tutton salt (NH4)2[Ni(H2O)6](SO4)2, but are longer in average [2.056 (13) versus 2.037 (12) Å].The noncoordinating water mol-ecules and di-methyl-ammonium cations connect the sulfate and [Ni(H2O)6](2+) octa-hedra via O-H⋯O and N-H⋯O hydrogen bonds from weak up to medium strength into a three-dimensional framework whereby the complex metal cations and sulfate anions are arranged in sheets parallel (001).

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Affiliation: Institut für Kristallographie, Universität zu Köln, Greinstrasse 6, D-50939 Köln, Germany.

ABSTRACT
In the title salt, (C2H8N)2[Ni(H2O)6)](SO4)2·2H2O, the Ni(II) cation is located on a centre of inversion and exhibits a slightly distorted octa-hedral arrangement of water mol-ecules. The Ni-O bond lengths in the complex [Ni(H2O)6](2+) cation show a distribution as in the related Tutton salt (NH4)2[Ni(H2O)6](SO4)2, but are longer in average [2.056 (13) versus 2.037 (12) Å]. The noncoordinating water mol-ecules and di-methyl-ammonium cations connect the sulfate and [Ni(H2O)6](2+) octa-hedra via O-H⋯O and N-H⋯O hydrogen bonds from weak up to medium strength into a three-dimensional framework whereby the complex metal cations and sulfate anions are arranged in sheets parallel (001).

No MeSH data available.


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The mol­ecular entities in the structure of the title compound, showing the atom-numbering scheme. Displacement ellipsoids are drawn at the 50% probability level. [Symmetry code: (i) −x, −y + 1, −z − 1.]
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fig1: The mol­ecular entities in the structure of the title compound, showing the atom-numbering scheme. Displacement ellipsoids are drawn at the 50% probability level. [Symmetry code: (i) −x, −y + 1, −z − 1.]

Mentions: The asymmetric unit of the title compound consists of one [NH2(CH3)]+ cation, one Ni2+ cation situated on an inversion centre (Wyckoff position 4a), one SO42− anion and four water mol­ecules, one of which is not coordinating to the metal cation (Fig. 1 ▶). The NiII cation exhibits a slightly distorted octa­hedral arrangement of the water mol­ecules. The Ni—O distances show the same bond lengths distribution [mean 2.055 (12) Å], as in the related Tutton salt (NH4)2[Ni(H2O)6](SO4)2 (Grimes et al., 1963 ▶), but are slightly longer (Δd = 0.02 Å). The NiII cation reaches an overall bond valence sum (Brown & Altermatt, 1985 ▶) of 2.03 valence units. The S—O distances are nearly equal [mean 1.463 (8) Å], however, the O—S—O angles vary clearly [average bond angle 109.5 (8)°].


Crystal structure of bis-(di-methyl-ammonium) hexa-aqua-nickel(II) bis-(sulfate) dihydrate.

Held P - Acta Crystallogr Sect E Struct Rep Online (2014)

The mol­ecular entities in the structure of the title compound, showing the atom-numbering scheme. Displacement ellipsoids are drawn at the 50% probability level. [Symmetry code: (i) −x, −y + 1, −z − 1.]
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4257308&req=5

fig1: The mol­ecular entities in the structure of the title compound, showing the atom-numbering scheme. Displacement ellipsoids are drawn at the 50% probability level. [Symmetry code: (i) −x, −y + 1, −z − 1.]
Mentions: The asymmetric unit of the title compound consists of one [NH2(CH3)]+ cation, one Ni2+ cation situated on an inversion centre (Wyckoff position 4a), one SO42− anion and four water mol­ecules, one of which is not coordinating to the metal cation (Fig. 1 ▶). The NiII cation exhibits a slightly distorted octa­hedral arrangement of the water mol­ecules. The Ni—O distances show the same bond lengths distribution [mean 2.055 (12) Å], as in the related Tutton salt (NH4)2[Ni(H2O)6](SO4)2 (Grimes et al., 1963 ▶), but are slightly longer (Δd = 0.02 Å). The NiII cation reaches an overall bond valence sum (Brown & Altermatt, 1985 ▶) of 2.03 valence units. The S—O distances are nearly equal [mean 1.463 (8) Å], however, the O—S—O angles vary clearly [average bond angle 109.5 (8)°].

Bottom Line: In the title salt, (C2H8N)2[Ni(H2O)6)](SO4)2·2H2O, the Ni(II) cation is located on a centre of inversion and exhibits a slightly distorted octa-hedral arrangement of water mol-ecules.The Ni-O bond lengths in the complex [Ni(H2O)6](2+) cation show a distribution as in the related Tutton salt (NH4)2[Ni(H2O)6](SO4)2, but are longer in average [2.056 (13) versus 2.037 (12) Å].The noncoordinating water mol-ecules and di-methyl-ammonium cations connect the sulfate and [Ni(H2O)6](2+) octa-hedra via O-H⋯O and N-H⋯O hydrogen bonds from weak up to medium strength into a three-dimensional framework whereby the complex metal cations and sulfate anions are arranged in sheets parallel (001).

View Article: PubMed Central - HTML - PubMed

Affiliation: Institut für Kristallographie, Universität zu Köln, Greinstrasse 6, D-50939 Köln, Germany.

ABSTRACT
In the title salt, (C2H8N)2[Ni(H2O)6)](SO4)2·2H2O, the Ni(II) cation is located on a centre of inversion and exhibits a slightly distorted octa-hedral arrangement of water mol-ecules. The Ni-O bond lengths in the complex [Ni(H2O)6](2+) cation show a distribution as in the related Tutton salt (NH4)2[Ni(H2O)6](SO4)2, but are longer in average [2.056 (13) versus 2.037 (12) Å]. The noncoordinating water mol-ecules and di-methyl-ammonium cations connect the sulfate and [Ni(H2O)6](2+) octa-hedra via O-H⋯O and N-H⋯O hydrogen bonds from weak up to medium strength into a three-dimensional framework whereby the complex metal cations and sulfate anions are arranged in sheets parallel (001).

No MeSH data available.


Related in: MedlinePlus