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Hydrothermal treatment of 4-sulfo-l-phenylalanine (H2SPA) with Zn(OH)2 and Cu(OH)2 affords two novel 1-D chiral coordination polymers [Zn(SPA)(H2O)2]n (1) and [Cu(SPA)(H2O)2]n (2) as chiral supramolecular aggregates through strong hydrogen bonding of the sulfonate group. 1 also displays a strong second harmonic generation (SHG) response.
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Xie et al. (2002) studied this question.
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