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Catena-Poly[[bis-(pyridine-κN)zinc]-μ-5-carb-oxy-benzene-1,3-di-carboxyl-ato-κ(2) O (1):O (3)].

ABSTRACT: The title one-dimensional coordination polymer, [Zn(C9H4O6)(C5H5N)2] n or [Zn(HBTC)(py)2] n , (I), where BTC is benzene-1,3,5-tricarboxylate and py is pyridine, is a solvent-free polymorph of [Zn(HBTC)(py)2]·2C2H5OH [Yaghi et al. (1997 ▶). Chem. Mater. 9, 1074-1076]. Differences in the spatial arrangements and supra-molecular packing of the [Zn(HBTC)(py)2] n chains in the two structures are described. The chain in (I) extends parallel to [100] and is severely puckered, with a Zn⋯Zn distance of 8.3599 (3) Å and a Zn⋯Zn⋯Zn angle of 107.516 (3)°, as a result of hydrogen-bonding inter-actions of the types O-H⋯O and C-H⋯O. There is no evidence for π-π inter-actions in (I). The differences between the solvent-free and solvent-containing structures can be accounted for by the absence of the ethanol solvent mol-ecule and the use of the converging pair of O atoms in the bis-monodentate bridging HBTC(2-) ligand in (I).

SUBMITTER: Yotnoi B

PROVIDER: S-EPMC3684903 | biostudies-literature | 2013 Jun

REPOSITORIES: biostudies-literature

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catena-Poly[[bis-(pyridine-κN)zinc]-μ-5-carb-oxy-benzene-1,3-di-carboxyl-ato-κ(2) O (1):O (3)].

Yotnoi Bunlawee B Rujiwatra Apinpus A

Acta crystallographica. Section E, Structure reports online 20130531 Pt 6

The title one-dimensional coordination polymer, [Zn(C9H4O6)(C5H5N)2] n or [Zn(HBTC)(py)2] n , (I), where BTC is benzene-1,3,5-tricarboxylate and py is pyridine, is a solvent-free polymorph of [Zn(HBTC)(py)2]·2C2H5OH [Yaghi et al. (1997 ▶). Chem. Mater. 9, 1074-1076]. Differences in the spatial arrangements and supra-molecular packing of the [Zn(HBTC)(py)2] n chains in the two structures are described. The chain in (I) extends parallel to [100] and is severely puckered, with a Zn⋯Zn distance of 8 ...[more]

PMID: 23795005

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