Substituent dependent layer topologies in copper isophthalate coordination polymers containing long-spanning dipyridylamide ligands

Two copper coordination polymers containing the long-spanning dipyridylamide 1,6-hexanebis(nicotinamide) (hbn) and a 5-position substituted isophthalate ligand have been prepared. {[Cu3(sip)2(hbn)3(H2O)4]·11.5H2O}n (sip = 5-sulfoisophthalate) displays neutral [Cu3(sip)2(H2O)4] fragments connected into 3,4-connected layers that engage in 2D + 2D → 3D parallel interpenetration, with entrained co-crystallized water molecule tapes.479