Limits...
Crystal structure of poly[bis-(μ-2-amino-4,5-di-cyano-imidazolato-κ(2) N (1):N (3))-trans-bis-(N,N'-di-methyl-formamide-κO)cadmium].

Zhu JL, Jiang GQ, Guo XQ, Tang YF, Wang M - Acta Crystallogr E Crystallogr Commun (2015)

Bottom Line: In the title structure, [Cd(C5H2N5)2(C3H7NO)2] n or [Cd(adci)2(DMF)2] n , the Cd(2+) ion is located on a twofold rotation axis and is six-coordinated in a CdN4O2 manner by four imidazole N atoms of four symmetry-related 2-amino-4,5-di-cyano-imidazolate (adci) anions in the equatorial plane and by two O atoms of symmetry-related N,N-di-methyl-formamide (DMF) ligands in axial positions.The adci(-) anions bridge adjacent Cd(2+) ions [shortest Cd⋯Cd separation = 6.733 (3) Å] into a layered coordination polymer extending parallel to (001).The primary amino group and the non-coordinating cyano groups of adci(-) anions are involved in hydrogen-bonding inter-actions with DMF ligands to stabilize the crystal structure.

View Article: PubMed Central - HTML - PubMed

Affiliation: College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, People's Republic of China.

ABSTRACT
In the title structure, [Cd(C5H2N5)2(C3H7NO)2] n or [Cd(adci)2(DMF)2] n , the Cd(2+) ion is located on a twofold rotation axis and is six-coordinated in a CdN4O2 manner by four imidazole N atoms of four symmetry-related 2-amino-4,5-di-cyano-imidazolate (adci) anions in the equatorial plane and by two O atoms of symmetry-related N,N-di-methyl-formamide (DMF) ligands in axial positions. The adci(-) anions bridge adjacent Cd(2+) ions [shortest Cd⋯Cd separation = 6.733 (3) Å] into a layered coordination polymer extending parallel to (001). The primary amino group and the non-coordinating cyano groups of adci(-) anions are involved in hydrogen-bonding inter-actions with DMF ligands to stabilize the crystal structure.

No MeSH data available.


Related in: MedlinePlus

(a) View of two kinds of hydrogen bonds in the layers. Dashed lines represent C—H⋯N (green) and N—H⋯O (red) hydrogen bonds, respectively. (b) The crystal packing between the layers in the title structure. C—H⋯N hydrogen-bonding inter­actions are drawn as red dashed lines. [Symmetry codes: (a)  − x, − + y, z; (b)  − x,  + y, z; (c) x, −y, − + z].
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4555411&req=5

fig3: (a) View of two kinds of hydrogen bonds in the layers. Dashed lines represent C—H⋯N (green) and N—H⋯O (red) hydrogen bonds, respectively. (b) The crystal packing between the layers in the title structure. C—H⋯N hydrogen-bonding inter­actions are drawn as red dashed lines. [Symmetry codes: (a)  − x, − + y, z; (b)  − x,  + y, z; (c) x, −y, − + z].

Mentions: Complex (I) possesses various hydrogen-bonding inter­actions (Table 1 ▸). The amino group and the non-coordinating cyano N atoms are involved in hydrogen-bonding inter­actions with DMF ligands to stabilize the crystal structure. In the 2D metal-organic network, inter­molecular N1—H1A⋯O1 hydrogen bonds between the primary amine group of adci− and the O atoms of an DMF ligand as well as C7—H7C⋯N5 inter­actions between the methyl C atoms of DMF and the non-coordinating N atoms of the cyano group of an adci− anion play a crucial role in directing and stabilizing the assembly of the supra­molecular structure (Kim et al., 2015 ▸; Sava et al., 2009 ▸), as shown in Fig. 3 ▸a. The layers are packed together by weak C7—H7B⋯N4 inter­actions, involving the methyl C atom of DMF and another N atom of a cyano group (Fig. 3 ▸b). The lengths of these three hydrogen bonds fall in or approach the range (3.2–4.0 Å) of weak hydrogen-bonding inter­actions (Desiraju, 1996 ▸; Steed & Atwood, 2000 ▸).


Crystal structure of poly[bis-(μ-2-amino-4,5-di-cyano-imidazolato-κ(2) N (1):N (3))-trans-bis-(N,N'-di-methyl-formamide-κO)cadmium].

Zhu JL, Jiang GQ, Guo XQ, Tang YF, Wang M - Acta Crystallogr E Crystallogr Commun (2015)

(a) View of two kinds of hydrogen bonds in the layers. Dashed lines represent C—H⋯N (green) and N—H⋯O (red) hydrogen bonds, respectively. (b) The crystal packing between the layers in the title structure. C—H⋯N hydrogen-bonding inter­actions are drawn as red dashed lines. [Symmetry codes: (a)  − x, − + y, z; (b)  − x,  + y, z; (c) x, −y, − + z].
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4555411&req=5

fig3: (a) View of two kinds of hydrogen bonds in the layers. Dashed lines represent C—H⋯N (green) and N—H⋯O (red) hydrogen bonds, respectively. (b) The crystal packing between the layers in the title structure. C—H⋯N hydrogen-bonding inter­actions are drawn as red dashed lines. [Symmetry codes: (a)  − x, − + y, z; (b)  − x,  + y, z; (c) x, −y, − + z].
Mentions: Complex (I) possesses various hydrogen-bonding inter­actions (Table 1 ▸). The amino group and the non-coordinating cyano N atoms are involved in hydrogen-bonding inter­actions with DMF ligands to stabilize the crystal structure. In the 2D metal-organic network, inter­molecular N1—H1A⋯O1 hydrogen bonds between the primary amine group of adci− and the O atoms of an DMF ligand as well as C7—H7C⋯N5 inter­actions between the methyl C atoms of DMF and the non-coordinating N atoms of the cyano group of an adci− anion play a crucial role in directing and stabilizing the assembly of the supra­molecular structure (Kim et al., 2015 ▸; Sava et al., 2009 ▸), as shown in Fig. 3 ▸a. The layers are packed together by weak C7—H7B⋯N4 inter­actions, involving the methyl C atom of DMF and another N atom of a cyano group (Fig. 3 ▸b). The lengths of these three hydrogen bonds fall in or approach the range (3.2–4.0 Å) of weak hydrogen-bonding inter­actions (Desiraju, 1996 ▸; Steed & Atwood, 2000 ▸).

Bottom Line: In the title structure, [Cd(C5H2N5)2(C3H7NO)2] n or [Cd(adci)2(DMF)2] n , the Cd(2+) ion is located on a twofold rotation axis and is six-coordinated in a CdN4O2 manner by four imidazole N atoms of four symmetry-related 2-amino-4,5-di-cyano-imidazolate (adci) anions in the equatorial plane and by two O atoms of symmetry-related N,N-di-methyl-formamide (DMF) ligands in axial positions.The adci(-) anions bridge adjacent Cd(2+) ions [shortest Cd⋯Cd separation = 6.733 (3) Å] into a layered coordination polymer extending parallel to (001).The primary amino group and the non-coordinating cyano groups of adci(-) anions are involved in hydrogen-bonding inter-actions with DMF ligands to stabilize the crystal structure.

View Article: PubMed Central - HTML - PubMed

Affiliation: College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, People's Republic of China.

ABSTRACT
In the title structure, [Cd(C5H2N5)2(C3H7NO)2] n or [Cd(adci)2(DMF)2] n , the Cd(2+) ion is located on a twofold rotation axis and is six-coordinated in a CdN4O2 manner by four imidazole N atoms of four symmetry-related 2-amino-4,5-di-cyano-imidazolate (adci) anions in the equatorial plane and by two O atoms of symmetry-related N,N-di-methyl-formamide (DMF) ligands in axial positions. The adci(-) anions bridge adjacent Cd(2+) ions [shortest Cd⋯Cd separation = 6.733 (3) Å] into a layered coordination polymer extending parallel to (001). The primary amino group and the non-coordinating cyano groups of adci(-) anions are involved in hydrogen-bonding inter-actions with DMF ligands to stabilize the crystal structure.

No MeSH data available.


Related in: MedlinePlus