Abstract
Hydrothermal reaction of zinc(II) salts with 5-sulfoisophthalic acid monosodium salt (NaO 3 SC 6 H 3 -1,3-(COOH) 2, NaH 2 -SIP) and 1,10-phenanthroline (phen) led to two new compounds, [Zn(phen) 3 ]·2H 2 SIP·4H 2 O (1) and [Zn(phen) 2 (H 2 O) 2 ]· 2H 2 SIP·2H 2 O (2). They were characterized by element analysis, IR spectroscopy, thermalgravimetric analysis (TGA), X-ray powder diffraction (XRD), and single-crystal X-ray diffraction. Both compounds 1-2 represent the first example ofZn/phen/SIP system. The Zn (II) ion in 1 is six-coordinated by six nitrogen atoms from three phen molecules, and the H 2 SIP - ligands engage in the formation of hydrogen bond. The Zn(II) ion in 2 is coordinated by four nitrogen atoms from two phen molecules and two oxygen atoms from two water molecules. Moreover, both 1 and 2 are assembled into 3 D supramolecular architectures by hydrogen bonds (O-H···O) and π-π interactions. Solvent water molecules occupying voids of the compounds serve as receptors or donors of the extensive O-H···O hydrogen bonds.
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