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The silver(I) nitrate complex of the ligand N -(pyridin-2-ylmeth ­ yl)pyrazine-2-carboxamide: a metal – organic framework (MOF) structure

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ABSTRACT

L–ag–l–ag–l–: The reaction of silver(I) nitrate with the mono-substituted pyrazine carboxamide ligand, N-(pyridin-2-ylmeth­yl)pyrazine-2-carboxamide (), led to the formation of the title compound with a metal–organic framework (MOF) structure, [Ag(C11H10N4O)(NO3)]n, poly[μ-nitrato-[μ-N-(pyridin-2-ylmethyl-κN)pyrazine-2-carboxamide-κN4]silver(I)]. The silver(I) atom is coordinated by a pyrazine N atom, a pyridine N atom, and two O atoms of two symmetry-related nitrate anions. It has a fourfold N2O2 coordination sphere, which can be described as distorted trigonal–pyramidal. The ligands are bridged by the silver atoms forming zigzag chains along the a-axis direction. The chains are arranged in pairs related by a twofold screw axis. They are linked via the nitrate anions, which bridge the silver(I) atoms in a μ2 fashion, forming the MOF structure. Within the framework there are N—H⋯O and C—H⋯O hydrogen bonds present.

No MeSH data available.


A view of the mol­ecular structure of the asymmetric unit of the title compound (I), with atom labelling. Displacement ellipsoids are drawn at the 50% probability level. For this figure, the symmetry codes are: (i) x − , −y, z; (ii) −x, −y + 1, z + ; (iii) −x, −y + 1, z − ; (iv) x + , −y, z.
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fig1: A view of the mol­ecular structure of the asymmetric unit of the title compound (I), with atom labelling. Displacement ellipsoids are drawn at the 50% probability level. For this figure, the symmetry codes are: (i) x − , −y, z; (ii) −x, −y + 1, z + ; (iii) −x, −y + 1, z − ; (iv) x + , −y, z.

Mentions: The mol­ecular structure of the asymmetric unit of compound (I) is illustrated in Fig. 1 ▸. Selected bond lengths and angles involving the Ag1 atom are given in Table 1 ▸. Atom Ag1 is coordinated by a pyrazine N atom, N2, the pyridine N atom, N4, and two O atoms, O11 and O12, of two symmetry-related nitrate anions (Fig. 1 ▸ and Table 1 ▸). Therefore, atom Ag1 has a fourfold N2O2 coordination sphere and a distorted trigonal–pyramidal geometry with a τ4 parameter = 0.72 (τ4 = 1 for a perfect tetra­hedral geometry, 0 for a perfect square-planar geometry; for inter­mediate structures, including trigonal–pyramidal and seesaw, the values of τ4 fall within the range of 0 to 1.0; Yang et al., 2007 ▸). Atom O13 of the nitrate anion lies above atom Ag1 with a distance Ag1⋯O13 of 2.864 (11) Å. The ligands are bridged by the silver atoms, forming –Ag–L–Ag–L– zigzag chains propagating along the a-axis direction (Fig. 2 ▸ and Table 1 ▸). They are arranged in pairs related by a twofold screw axis (Fig. 2 ▸).


The silver(I) nitrate complex of the ligand N -(pyridin-2-ylmeth ­ yl)pyrazine-2-carboxamide: a metal – organic framework (MOF) structure
A view of the mol­ecular structure of the asymmetric unit of the title compound (I), with atom labelling. Displacement ellipsoids are drawn at the 50% probability level. For this figure, the symmetry codes are: (i) x − , −y, z; (ii) −x, −y + 1, z + ; (iii) −x, −y + 1, z − ; (iv) x + , −y, z.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC5382616&req=5

fig1: A view of the mol­ecular structure of the asymmetric unit of the title compound (I), with atom labelling. Displacement ellipsoids are drawn at the 50% probability level. For this figure, the symmetry codes are: (i) x − , −y, z; (ii) −x, −y + 1, z + ; (iii) −x, −y + 1, z − ; (iv) x + , −y, z.
Mentions: The mol­ecular structure of the asymmetric unit of compound (I) is illustrated in Fig. 1 ▸. Selected bond lengths and angles involving the Ag1 atom are given in Table 1 ▸. Atom Ag1 is coordinated by a pyrazine N atom, N2, the pyridine N atom, N4, and two O atoms, O11 and O12, of two symmetry-related nitrate anions (Fig. 1 ▸ and Table 1 ▸). Therefore, atom Ag1 has a fourfold N2O2 coordination sphere and a distorted trigonal–pyramidal geometry with a τ4 parameter = 0.72 (τ4 = 1 for a perfect tetra­hedral geometry, 0 for a perfect square-planar geometry; for inter­mediate structures, including trigonal–pyramidal and seesaw, the values of τ4 fall within the range of 0 to 1.0; Yang et al., 2007 ▸). Atom O13 of the nitrate anion lies above atom Ag1 with a distance Ag1⋯O13 of 2.864 (11) Å. The ligands are bridged by the silver atoms, forming –Ag–L–Ag–L– zigzag chains propagating along the a-axis direction (Fig. 2 ▸ and Table 1 ▸). They are arranged in pairs related by a twofold screw axis (Fig. 2 ▸).

View Article: PubMed Central - HTML - PubMed

ABSTRACT

L–ag–l–ag–l–: The reaction of silver(I) nitrate with the mono-substituted pyrazine carboxamide ligand, N-(pyridin-2-ylmeth­yl)pyrazine-2-carboxamide (), led to the formation of the title compound with a metal–organic framework (MOF) structure, [Ag(C11H10N4O)(NO3)]n, poly[μ-nitrato-[μ-N-(pyridin-2-ylmethyl-κN)pyrazine-2-carboxamide-κN4]silver(I)]. The silver(I) atom is coordinated by a pyrazine N atom, a pyridine N atom, and two O atoms of two symmetry-related nitrate anions. It has a fourfold N2O2 coordination sphere, which can be described as distorted trigonal–pyramidal. The ligands are bridged by the silver atoms forming zigzag chains along the a-axis direction. The chains are arranged in pairs related by a twofold screw axis. They are linked via the nitrate anions, which bridge the silver(I) atoms in a μ2 fashion, forming the MOF structure. Within the framework there are N—H⋯O and C—H⋯O hydrogen bonds present.

No MeSH data available.