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Crystal structures of three lead(II) acetate-bridged di-amino-benzene coordination polymers.

Geiger DK, Parsons DE, Zick PL - Acta Crystallogr Sect E Struct Rep Online (2014)

Bottom Line: Chains along [010] are joined by bridging acetate ligands to form planes parallel to (10-1). (II) and (III) are isotypic and have one Pb(II) ion in the asymmetric unit that has an O6N coordination sphere.Polymeric chains parallel to [100] exhibit hydrogen bonding between the amine and acetate ligands.In (III), additional hydrogen bonds between cyano groups and non-coordinating amines join the chains by forming R 2 (2)(14) rings.

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Affiliation: Department of Chemistry, SUNY-College at Geneseo, Geneseo, NY 14454, USA.

ABSTRACT
Poly[tris-(acetato-κ(2) O,O')(μ2-acetato-κ(3) O,O':O)tetra-kis-(μ3-acetato-κ(4) O,O':O:O')bis-(benzene-1,2-di-amine-κN)tetra-lead(II)], [Pb4(CH3COO)8(C6H8N2)2] n , (I), poly[(acetato-κ(2) O,O')(μ3-acetato-κ(4) O,O':O:O')(4-chloro-benzene-1,2-diamine-κN)lead(II)], [Pb(CH3COO)2(C6H7ClN2)] n , (II), and poly[(κ(2) O,O')(μ3-acetato-κ(4) O,O':O:O')(3,4-di-amino-benzo-nitrile-κN)lead(II)], [Pb(CH3COO)2(C7H7N3)] n , (III), have polymeric structures in which monomeric units are joined by bridging acetate ligands. All of the Pb(II) ions exhibit hemidirected coordination. The repeating unit in (I) is composed of four Pb(II) ions having O6, O6N, O7 and O6N coordination spheres, respectively, where N represents a monodentate benzene-1,2-di-amine ligand and O acetate O atoms. Chains along [010] are joined by bridging acetate ligands to form planes parallel to (10-1). (II) and (III) are isotypic and have one Pb(II) ion in the asymmetric unit that has an O6N coordination sphere. Pb2O2 units result from a symmetry-imposed inversion center. Polymeric chains parallel to [100] exhibit hydrogen bonding between the amine and acetate ligands. In (III), additional hydrogen bonds between cyano groups and non-coordinating amines join the chains by forming R 2 (2)(14) rings.

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Packing diagram for (III), showing the chains joined by N—H⋯N C hydrogen bonds. Hydrogen bonds are represented by by dashed lines. H atoms not involved in the hydrogen-bonding network are not shown. [Symmetry identifiers: (i) −x + 1, −y + 1, −z + 1; (ii) −x + 2, −y + 1, −z + 1; (iii) x + 1, y − 1, z − 1; (iv) −x + 2, −y, −z; (v) x, y − 1, z − 1.]
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fig8: Packing diagram for (III), showing the chains joined by N—H⋯N C hydrogen bonds. Hydrogen bonds are represented by by dashed lines. H atoms not involved in the hydrogen-bonding network are not shown. [Symmetry identifiers: (i) −x + 1, −y + 1, −z + 1; (ii) −x + 2, −y + 1, −z + 1; (iii) x + 1, y − 1, z − 1; (iv) −x + 2, −y, −z; (v) x, y − 1, z − 1.]

Mentions: In compounds (II) and (III), chains parallel to [100] are observed. An extensive N—H⋯O hydrogen-bonding network is found along the chains (see Tables 5 ▶ and 6 ▶). For (III), the nitrile group affords the opportunity for additional hydrogen bonding. As seen in Fig. 8 ▶, this results in (14) rings involving N—H⋯N C hydrogen bonds between adjacent chains.


Crystal structures of three lead(II) acetate-bridged di-amino-benzene coordination polymers.

Geiger DK, Parsons DE, Zick PL - Acta Crystallogr Sect E Struct Rep Online (2014)

Packing diagram for (III), showing the chains joined by N—H⋯N C hydrogen bonds. Hydrogen bonds are represented by by dashed lines. H atoms not involved in the hydrogen-bonding network are not shown. [Symmetry identifiers: (i) −x + 1, −y + 1, −z + 1; (ii) −x + 2, −y + 1, −z + 1; (iii) x + 1, y − 1, z − 1; (iv) −x + 2, −y, −z; (v) x, y − 1, z − 1.]
© Copyright Policy - open-access
Related In: Results  -  Collection

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Show All Figures
getmorefigures.php?uid=PMC4257386&req=5

fig8: Packing diagram for (III), showing the chains joined by N—H⋯N C hydrogen bonds. Hydrogen bonds are represented by by dashed lines. H atoms not involved in the hydrogen-bonding network are not shown. [Symmetry identifiers: (i) −x + 1, −y + 1, −z + 1; (ii) −x + 2, −y + 1, −z + 1; (iii) x + 1, y − 1, z − 1; (iv) −x + 2, −y, −z; (v) x, y − 1, z − 1.]
Mentions: In compounds (II) and (III), chains parallel to [100] are observed. An extensive N—H⋯O hydrogen-bonding network is found along the chains (see Tables 5 ▶ and 6 ▶). For (III), the nitrile group affords the opportunity for additional hydrogen bonding. As seen in Fig. 8 ▶, this results in (14) rings involving N—H⋯N C hydrogen bonds between adjacent chains.

Bottom Line: Chains along [010] are joined by bridging acetate ligands to form planes parallel to (10-1). (II) and (III) are isotypic and have one Pb(II) ion in the asymmetric unit that has an O6N coordination sphere.Polymeric chains parallel to [100] exhibit hydrogen bonding between the amine and acetate ligands.In (III), additional hydrogen bonds between cyano groups and non-coordinating amines join the chains by forming R 2 (2)(14) rings.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Chemistry, SUNY-College at Geneseo, Geneseo, NY 14454, USA.

ABSTRACT
Poly[tris-(acetato-κ(2) O,O')(μ2-acetato-κ(3) O,O':O)tetra-kis-(μ3-acetato-κ(4) O,O':O:O')bis-(benzene-1,2-di-amine-κN)tetra-lead(II)], [Pb4(CH3COO)8(C6H8N2)2] n , (I), poly[(acetato-κ(2) O,O')(μ3-acetato-κ(4) O,O':O:O')(4-chloro-benzene-1,2-diamine-κN)lead(II)], [Pb(CH3COO)2(C6H7ClN2)] n , (II), and poly[(κ(2) O,O')(μ3-acetato-κ(4) O,O':O:O')(3,4-di-amino-benzo-nitrile-κN)lead(II)], [Pb(CH3COO)2(C7H7N3)] n , (III), have polymeric structures in which monomeric units are joined by bridging acetate ligands. All of the Pb(II) ions exhibit hemidirected coordination. The repeating unit in (I) is composed of four Pb(II) ions having O6, O6N, O7 and O6N coordination spheres, respectively, where N represents a monodentate benzene-1,2-di-amine ligand and O acetate O atoms. Chains along [010] are joined by bridging acetate ligands to form planes parallel to (10-1). (II) and (III) are isotypic and have one Pb(II) ion in the asymmetric unit that has an O6N coordination sphere. Pb2O2 units result from a symmetry-imposed inversion center. Polymeric chains parallel to [100] exhibit hydrogen bonding between the amine and acetate ligands. In (III), additional hydrogen bonds between cyano groups and non-coordinating amines join the chains by forming R 2 (2)(14) rings.

No MeSH data available.


Related in: MedlinePlus