Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 6 (June 2013)

metal-organic compounds

Acta Cryst. (2013). E69, m345    [ doi:10.1107/S1600536813014347 ]


B. Yotnoi and A. Rujiwatra

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 supra­molecular 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 inter­actions of the types O-H...O and C-H...O. There is no evidence for [pi]-[pi] inter­actions in (I). The differences between the solvent-free and solvent-containing structures can be accounted for by the absence of the ethanol solvent mol­ecule and the use of the converging pair of O atoms in the bis-monodentate bridging HBTC2- ligand in (I).

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