Syntheses, Structural Characterization, and Properties of {[Cu(bpp) 2 (H 2 O) 2 ](tp)·7H 2 O} and {[Cu(bpp) 2 (H 2 O)](ip)·7H 2 O} Complexes. New Examples of the Organic Anionic Template Effect on Induced Assembly of Water Clusters (bpp = 1,3-Bis(4-pyridyl)propane, tp = Terephthalate, ip = Isophthalate) †