Three compounds of the composition [AgL](NO3)(H2O)n, n = 0 (1), 1 (2), 2 (3) have been obtained with different structures each. Whereas 1 builds single chains of ...–Ag–L–Ag–L–... crosslinked by NO3− anions to form two-dimensional layers, the conformation of L changes from anti to syn in 2, yielding pairs of chains with close Ag–Ag contacts. The anti conformation of the ligand L is again adopted in 3, and pairs of chains are now arranged in a parallel fashion. Calculations give a qualitative understanding of involved forces.
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Robin et al. (2004) studied this question.
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