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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 (I), showing the linked chains. Hydrogen bonds are represented by dashed lines. H atoms not involved in the hydrogen-bonding network are not shown. [Symmetry identifiers: (i) −x + 2, −y + 1, −z + 1; (ii) x + , y + , z + ; (iii) x − , −y + , z − ; (iv) −x + , y + , −z + ; (v) −x + , y + , −z + .]
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fig7: Packing diagram for (I), showing the linked chains. Hydrogen bonds are represented by dashed lines. H atoms not involved in the hydrogen-bonding network are not shown. [Symmetry identifiers: (i) −x + 2, −y + 1, −z + 1; (ii) x + , y + , z + ; (iii) x − , −y + , z − ; (iv) −x + , y + , −z + ; (v) −x + , y + , −z + .]

Mentions: The one-dimensional asymmetric unit chain of (I) propagates via inversion centers and is extended into two dimensions via an acetate ligand of type (c) that bridges Pb2 and Pb3iii, as shown in Fig. 7 ▶, where the symmetry designators are defined. The result is an extended structure composed of planes parallel to (10). N—H⋯O and N—H⋯N hydrogen bonding is observed along the chains parallel to [010] (see Table 4 ▶).


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

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

fig7: Packing diagram for (I), showing the linked chains. Hydrogen bonds are represented by dashed lines. H atoms not involved in the hydrogen-bonding network are not shown. [Symmetry identifiers: (i) −x + 2, −y + 1, −z + 1; (ii) x + , y + , z + ; (iii) x − , −y + , z − ; (iv) −x + , y + , −z + ; (v) −x + , y + , −z + .]
Mentions: The one-dimensional asymmetric unit chain of (I) propagates via inversion centers and is extended into two dimensions via an acetate ligand of type (c) that bridges Pb2 and Pb3iii, as shown in Fig. 7 ▶, where the symmetry designators are defined. The result is an extended structure composed of planes parallel to (10). N—H⋯O and N—H⋯N hydrogen bonding is observed along the chains parallel to [010] (see Table 4 ▶).

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