Citation: Ion, Adrian E.; Nica, Simona; Madalan, Augustin M.; Maxim, Catalin; Julve, Miguel; Lloret, Francesc; Andruh, Marius (2014). One-dimensional coordination polymers constructed from di- and trinuclear {3d--4f} tectons. A new useful spacer in crystal engineering: 1,3-bis(4-pyridyl)azulene. CrystEngComm, 16, pp. 319-.