Greasy tails switch 1D-coordination [{Zn<sub>2</sub>(OAc)<sub>4</sub>(4′-(4-ROC<sub>6</sub>H<sub>4</sub>)-4,2′:6′,4′′-tpy)}<sub>n</sub>] polymers to discrete [Zn<sub>2</sub>(OAc)<sub>4</sub>(4′-(4-ROC<sub>6</sub>H<sub>4</sub>)-4,2′:6′,4′′-tpy)<sub>2</sub>] complexes
CrystEngComm