Abstract
The reaction of Cd(NO 3) 2 with 5-sulfoisophthalic acid monosodium salt (NaH 2sip) in the presence of piperazine (pip) or ethylenediamine (en) produced three-dimensional supramolecular complexes [Cd(sip)(Hpip)(H 2O) 2] ( 1) and [Cd(sip)(H 2O) 3] · 0.5(H 2en) · H 2O ( 2). In both compounds, the Cd 2+ atoms are linked by sip 3− into a one-dimensional zig zag chain. The resultant negative ribbons are charge balanced by the coordinated protonated pip (Hpip) in 1 but by free, half occupied H 2en in 2. The zigzag chains are further linked together by hydrogen bonds and π–π stacking interactions to form supramolecular open frameworks. Both 1 and 2 show violet–blue photoluminescence at room temperature.
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