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Catena-Poly[[bis-(4-methyl-benzoato-?O:O')lead(II)]-?-nicotinamide-?N:O].

ABSTRACT: In the title compound, [Pb(C(8)H(7)O(2))(2)(C(6)H(6)N(2)O)](n), the Pb(II) ion is coordinated by two 4-methyl-benzoate (PMB) and one nicotinamide (NA) ligands while symmetry-related NA ligands bridge adjacent Pb(II) ions, forming polymeric chains along the c axis. The carboxyl-ate groups in the two PMB ions are twisted away from the attached benzene ring by 22.9?(2) and 4.6?(2)°. The two benzene rings of the PMB ions are oriented at a dihedral angle of 83.7?(1)°. In a polymeric chain, the NA ligands are linked to PMB ions through intra-molecular N-H?O hydrogen bonds. In the crystal structure, adjacent polymeric chains inter-act via N-H?O and C-H?O hydrogen bonds, forming a two-dimensional network parallel to the bc plane.

SUBMITTER: Hokelek T

PROVIDER: S-EPMC3007553 | biostudies-literature | 2010 Jul

REPOSITORIES: biostudies-literature

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catena-Poly[[bis-(4-methyl-benzoato-κO:O')lead(II)]-μ-nicotinamide-κN:O].

Hökelek Tuncer T Dal Hakan H Tercan Barış B Cimen Efdal E Necefoğlu Hacali H

Acta crystallographica. Section E, Structure reports online 20100717 Pt 8

In the title compound, [Pb(C(8)H(7)O(2))(2)(C(6)H(6)N(2)O)](n), the Pb(II) ion is coordinated by two 4-methyl-benzoate (PMB) and one nicotinamide (NA) ligands while symmetry-related NA ligands bridge adjacent Pb(II) ions, forming polymeric chains along the c axis. The carboxyl-ate groups in the two PMB ions are twisted away from the attached benzene ring by 22.9 (2) and 4.6 (2)°. The two benzene rings of the PMB ions are oriented at a dihedral angle of 83.7 (1)°. In a polymeric chain, the NA lig ...[more]

PMID: 21588183

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catena-Poly[[(4-methyl-benzoato-κO)manganese(II)]-μ-aqua-bis-(μ-4-methyl-benzoato-κO:O')[(4-methyl-benzoato-κO)manganese(II)]-bis-(μ-N,N-diethyl-nicotinamide)-κN:O;O:N].

Project description:The asymmetric unit of the title complex, [Mn(2)(C(8)H(7)O(2))(4)(C(10)H(14)N(2)O)(2)(H(2)O)](n), contains two crystallographically independent units. In each one, the Mn(II) ions are bridged by two 4-methyl-benzoate (PMB) ligands and one water mol-ecule. In the crystal structure, each Mn(II) ion is coordinated by three PMB ligands, one water mol-ecule and two symmetry-related N,N-diethyl-nicotinamide (DENA) ligands. Symmetry-related Mn(II) ions are bridged by the N and O atoms of symmetry-related DENA ligands, forming polymeric chains parallel to [100]. The coord-ination environmnts for the Mn(II) ions are slightly distorted octa-hedral. Intra-molecular O-H⋯O hydrogen bonds link bridging water mol-ecules to the carboxyl-ate O atoms of a neigh-boring polymeric chain. In the crystal structure, π-π contacts between benzene rings [centroid-centroid distance = 3.562 (1) Å] and weak C-H⋯π inter-actions are also observed.

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catena-Poly[[bis-(1-methyl-1H-imidazole-κN)zinc]-μ-3-nitro-phthalato-κO:O].

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| S-EPMC2962240 | biostudies-literature

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