Syntheses, Structural Characterization, and Properties of {[Cu(bpp)2(H2O)2](tp)·7H2O} and {[Cu(bpp)2(H2O)](ip)·7H2O} 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)†