Metal ion-dependent structural phase transition and impact of the Jahn–Teller effect in two organic–inorganic hybrid compounds†
Abstract
Two new molecule-based organic–inorganic hybrid compounds, (H2dabco)[M(H2O)6][SiF6]2 (dabco = 1,4-diazabicyclo [2.2.2] octane, M = Mn2+ & Cu2+), affected by the different metal ions and Jahn–Teller effect of Cu2+, exhibit metal ion-dependent structural phase transitions, large dielectric response, second harmonic generation (based on Mn2+) and ferroelasticity (based on Cu2+). This work provides an effective method to utilize Jahn–Teller distortion to design functional materials.