Hydrothermal synthesis and crystal structure of polytris (μ 2 - cis -1, 4–cyclohexanedicarboxylato) -κ 2 O: O ′ ] -bisμ 3 -1, 3, 5-tris[ (1 H -imidazol-1-yl) methylbenzene-κ 3 N, N ′, N ″ ]trizinc (II) trihydrate, C 60 H 72 N 12 O 15 Zn 3 | Synapse