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Bis(2,2'-bipyridine-κN,N')(maleato-κO,O)nickel(II) 7.34-hydrate.

Pavlová A, Cernák J, Harms K - Acta Crystallogr Sect E Struct Rep Online (2008)

Bottom Line: The nickel(II) atom is coordinated in a distorted octa-hedral geometry by two O atoms from one carboxyl-ate group of the maleato ligand and by four N atoms from two 2,2'-bipyridine (bipy) ligands.One H atom of the maleate ligand is involved in a weak hydrogen bond of the C-H⋯O type.Stacking inter-actions between the pyridyl rings of the bipy ligands [centroid-centroid distance = 3.549 (15) Å] lead to the formation of pairs of complex mol-ecules.

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ABSTRACT
The title compound, [Ni(C(4)H(2)O(4))(C(10)H(8)N(2))(2)]·7.34H(2)O, was obtained by crystallization from an aqueous ethano-lic reaction mixture containing nickel(II) acetate, maleic acid, bipyridine, sodium hydroxide and ammonia. The asymmetric unit contains one independent complex mol-ecule and 7.34 water mol-ecules occupying eight crystallographically independent positions. Two of these water molecules are disordered. The nickel(II) atom is coordinated in a distorted octa-hedral geometry by two O atoms from one carboxyl-ate group of the maleato ligand and by four N atoms from two 2,2'-bipyridine (bipy) ligands. The water mol-ecules, along with the O atoms of the uncoordinated carboxyl-ate group, form an extended hydro-philic three-dimensional hydrogen-bonded system with large cavities in which the hydro-phobic bipy ligands are located. One H atom of the maleate ligand is involved in a weak hydrogen bond of the C-H⋯O type. Stacking inter-actions between the pyridyl rings of the bipy ligands [centroid-centroid distance = 3.549 (15) Å] lead to the formation of pairs of complex mol-ecules.

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View of the hydrogen bonding system (dashed lines) showing formation of large cavities which accommodate the hydrophobic parts of the complex molecules. Only one disordered position for the hydrogen atoms bound to O8 atom is shown. For the sake of clarity, only the N donor atoms of the bipy ligands are shown.
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Fap2: View of the hydrogen bonding system (dashed lines) showing formation of large cavities which accommodate the hydrophobic parts of the complex molecules. Only one disordered position for the hydrogen atoms bound to O8 atom is shown. For the sake of clarity, only the N donor atoms of the bipy ligands are shown.


Bis(2,2'-bipyridine-κN,N')(maleato-κO,O)nickel(II) 7.34-hydrate.

Pavlová A, Cernák J, Harms K - Acta Crystallogr Sect E Struct Rep Online (2008)

View of the hydrogen bonding system (dashed lines) showing formation of large cavities which accommodate the hydrophobic parts of the complex molecules. Only one disordered position for the hydrogen atoms bound to O8 atom is shown. For the sake of clarity, only the N donor atoms of the bipy ligands are shown.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2960002&req=5

Fap2: View of the hydrogen bonding system (dashed lines) showing formation of large cavities which accommodate the hydrophobic parts of the complex molecules. Only one disordered position for the hydrogen atoms bound to O8 atom is shown. For the sake of clarity, only the N donor atoms of the bipy ligands are shown.
Bottom Line: The nickel(II) atom is coordinated in a distorted octa-hedral geometry by two O atoms from one carboxyl-ate group of the maleato ligand and by four N atoms from two 2,2'-bipyridine (bipy) ligands.One H atom of the maleate ligand is involved in a weak hydrogen bond of the C-H⋯O type.Stacking inter-actions between the pyridyl rings of the bipy ligands [centroid-centroid distance = 3.549 (15) Å] lead to the formation of pairs of complex mol-ecules.

View Article: PubMed Central - HTML - PubMed

ABSTRACT
The title compound, [Ni(C(4)H(2)O(4))(C(10)H(8)N(2))(2)]·7.34H(2)O, was obtained by crystallization from an aqueous ethano-lic reaction mixture containing nickel(II) acetate, maleic acid, bipyridine, sodium hydroxide and ammonia. The asymmetric unit contains one independent complex mol-ecule and 7.34 water mol-ecules occupying eight crystallographically independent positions. Two of these water molecules are disordered. The nickel(II) atom is coordinated in a distorted octa-hedral geometry by two O atoms from one carboxyl-ate group of the maleato ligand and by four N atoms from two 2,2'-bipyridine (bipy) ligands. The water mol-ecules, along with the O atoms of the uncoordinated carboxyl-ate group, form an extended hydro-philic three-dimensional hydrogen-bonded system with large cavities in which the hydro-phobic bipy ligands are located. One H atom of the maleate ligand is involved in a weak hydrogen bond of the C-H⋯O type. Stacking inter-actions between the pyridyl rings of the bipy ligands [centroid-centroid distance = 3.549 (15) Å] lead to the formation of pairs of complex mol-ecules.

No MeSH data available.


Related in: MedlinePlus