Citation: D\'iaz-Gallifa, Pau; Fabelo, Oscar; Ca\~nadillas-Delgado, Laura; Pas\'an, Jorge; Labrador, Ana; Lloret, Francesc; Julve, Miguel; Ruiz-P\'erez, Catalina (2013). Synthesis, Crystal Structure and Magnetic Characterization of a Series of CuII--LnIIIHeterometallic [Ln = La, Ce, Pr, Nd and Sm) Metal--Organic Compounds with an Unusual Single Crystal to Single Crystal Phase Transition. Crystal Growth & Design, 13, pp. 4735-.