A New Strategy of Designing New Crystal StructuresBased on Topological Structure: Syntheses and Crystal Structures ofFive Coordination Polymers with (4,4) Topology.

Five coordination polymers 1–5with four types of (4,4) layers havebeen synthesized through anew strategy of designing their crystal structures based on (4,4)topology. Compound [Co(adc)(bpp)(H2O)]n(1) presents a 2-D structurewith 2-fold homointerpenetration of layer A, while the2-D compound {[Ni(adc)(bpp)2(H2O)]2·bpp}n(2) presents 2-fold heterointerpenetration of layer Bandlayer C. Compound [Zn(adc)(bpp)·DMF]n(3) displays a typical 2-D→ 3-D parallel interpenetrating structure of layer D. Compounds [Ni(Cladc)(bpp)(H2O)]n(4) and [Co(Cladc)(bpp)(H2O)]n(5) are isomorphousand display similar structures to 1. (H2adc= 4,4′-azodibenzoic acid, ClH2adc = 3,3′-dichloro-4,4′-azodibenzoicacid, bpp = 1,3-di(4-pyridyl)propane, DMF = N,N-dimethylformamide). Luminescence propertiesand thermal stabilities of 1–5havebeen explored. [ABSTRACT FROM AUTHOR]