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Crystal structure of tetra-aqua-(5,5'-dimethyl-2,2'-bipyridyl-κ(2) N,N')iron(II) sulfate.

Belamri Y, Setifi F, Francuski BM, Novaković SB, Zouaoui S - Acta Crystallogr Sect E Struct Rep Online (2014)

Bottom Line: O-H⋯O hydrogen bonding between the four aqua ligands of the cationic complex and four O-atom acceptors of the anion leads to the formation of layers parallel to the ab plane.Neighbouring layers further inter-act by means of C-H⋯O and π-π inter-actions involving the laterally positioned bi-pyridine rings.The perpen-dicular distance between π-π inter-acting rings is 3.365 (2) Å, with a centroid-centroid distance of 3.702 (3) Å.

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Affiliation: Laboratoire de Chimie, Ingénierie Moléculaire et Nanostructures (LCIMN), Université Ferhat Abbas Sétif 1, Sétif 19000, Algeria.

ABSTRACT
In the title compound, [Fe(C12H12N2)(H2O)4]SO4, the central Fe(II) ion is coordinated by two N atoms from the 5,5'-dimethyl-2,2'-bi-pyridine ligand and four water O atoms in a distorted octa-hedral geometry. The Fe-O coordination bond lengths vary from 2.080 (3) to 2.110 (3) Å, while the two Fe-N coordination bonds have practically identical lengths [2.175 (3) and 2.177 (3) Å]. The chelating N-Fe-N angle of 75.6 (1)° shows the largest deviation from an ideal octa-hedral geometry; the other coordination angles deviate from ideal values by 0.1 (1) to 9.1 (1)°. O-H⋯O hydrogen bonding between the four aqua ligands of the cationic complex and four O-atom acceptors of the anion leads to the formation of layers parallel to the ab plane. Neighbouring layers further inter-act by means of C-H⋯O and π-π inter-actions involving the laterally positioned bi-pyridine rings. The perpen-dicular distance between π-π inter-acting rings is 3.365 (2) Å, with a centroid-centroid distance of 3.702 (3) Å.

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(a) O—H⋯O inter­actions (dashed lines) connect the cations and anions into layers parallel to the ab plane. (b) View of a single layer down the a axis.
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fig2: (a) O—H⋯O inter­actions (dashed lines) connect the cations and anions into layers parallel to the ab plane. (b) View of a single layer down the a axis.

Mentions: Within the crystal packing, the charged components are connected by an extensive hydrogen-bonding network (Table 1 ▶). Each of the [Fe(dmbpy)(H2O)4]2+ cations engages all four coordinating water mol­ecules in hydrogen bonding to four [SO4]2− anions (Fig. 2 ▶a). The anions surrounding the cationic unit are positioned at similar Fe⋯S distance of 4.9 Å. On the other hand, each of the [SO4]2− anions appears surrounded with four cationic units, where its four O atoms engage as acceptors in bifurcated O—H⋯O hydrogen bonds towards neighbouring cations (Fig. 2 ▶a). Such a mutual arrangement leads to the formation of a two-dimensional hydrogen-bonded network parallel to the ab plane (Fig. 2 ▶b). Laterally arranged aromatic rings of the 5,5′-dimethyl-2,2′-bi­pyridine ligand in neighbouring layers inter­act by means of weak C—H⋯O and π–π inter­actions, forming the three-dimensional crystal packing (Table 1 ▶ and Fig. 3 ▶). The centroid–centroid distance for the latter inter­action is 3.702 (3) Å.


Crystal structure of tetra-aqua-(5,5'-dimethyl-2,2'-bipyridyl-κ(2) N,N')iron(II) sulfate.

Belamri Y, Setifi F, Francuski BM, Novaković SB, Zouaoui S - Acta Crystallogr Sect E Struct Rep Online (2014)

(a) O—H⋯O inter­actions (dashed lines) connect the cations and anions into layers parallel to the ab plane. (b) View of a single layer down the a axis.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4257445&req=5

fig2: (a) O—H⋯O inter­actions (dashed lines) connect the cations and anions into layers parallel to the ab plane. (b) View of a single layer down the a axis.
Mentions: Within the crystal packing, the charged components are connected by an extensive hydrogen-bonding network (Table 1 ▶). Each of the [Fe(dmbpy)(H2O)4]2+ cations engages all four coordinating water mol­ecules in hydrogen bonding to four [SO4]2− anions (Fig. 2 ▶a). The anions surrounding the cationic unit are positioned at similar Fe⋯S distance of 4.9 Å. On the other hand, each of the [SO4]2− anions appears surrounded with four cationic units, where its four O atoms engage as acceptors in bifurcated O—H⋯O hydrogen bonds towards neighbouring cations (Fig. 2 ▶a). Such a mutual arrangement leads to the formation of a two-dimensional hydrogen-bonded network parallel to the ab plane (Fig. 2 ▶b). Laterally arranged aromatic rings of the 5,5′-dimethyl-2,2′-bi­pyridine ligand in neighbouring layers inter­act by means of weak C—H⋯O and π–π inter­actions, forming the three-dimensional crystal packing (Table 1 ▶ and Fig. 3 ▶). The centroid–centroid distance for the latter inter­action is 3.702 (3) Å.

Bottom Line: O-H⋯O hydrogen bonding between the four aqua ligands of the cationic complex and four O-atom acceptors of the anion leads to the formation of layers parallel to the ab plane.Neighbouring layers further inter-act by means of C-H⋯O and π-π inter-actions involving the laterally positioned bi-pyridine rings.The perpen-dicular distance between π-π inter-acting rings is 3.365 (2) Å, with a centroid-centroid distance of 3.702 (3) Å.

View Article: PubMed Central - HTML - PubMed

Affiliation: Laboratoire de Chimie, Ingénierie Moléculaire et Nanostructures (LCIMN), Université Ferhat Abbas Sétif 1, Sétif 19000, Algeria.

ABSTRACT
In the title compound, [Fe(C12H12N2)(H2O)4]SO4, the central Fe(II) ion is coordinated by two N atoms from the 5,5'-dimethyl-2,2'-bi-pyridine ligand and four water O atoms in a distorted octa-hedral geometry. The Fe-O coordination bond lengths vary from 2.080 (3) to 2.110 (3) Å, while the two Fe-N coordination bonds have practically identical lengths [2.175 (3) and 2.177 (3) Å]. The chelating N-Fe-N angle of 75.6 (1)° shows the largest deviation from an ideal octa-hedral geometry; the other coordination angles deviate from ideal values by 0.1 (1) to 9.1 (1)°. O-H⋯O hydrogen bonding between the four aqua ligands of the cationic complex and four O-atom acceptors of the anion leads to the formation of layers parallel to the ab plane. Neighbouring layers further inter-act by means of C-H⋯O and π-π inter-actions involving the laterally positioned bi-pyridine rings. The perpen-dicular distance between π-π inter-acting rings is 3.365 (2) Å, with a centroid-centroid distance of 3.702 (3) Å.

No MeSH data available.


Related in: MedlinePlus