Dimension-Dependent Phase Transitions, Ferroelasticity, and Photoluminescence in Hybrid Organic-Inorganic Materials

[(CH3)(3)P(CH2)(2)OH](2)Cd-3(SCN)(8) (1) and [(CH3)(3)P(CH2)(2)OH]Cd(SCN)(3) (2) were obtained with completely different structures and properties under the same synthesis conditions. Compound 1, showing green fluorescence, has a rare three-dimensional 4,6-connected fsh topology having (4(3).6(3))(2)(4(6).6(6).8(3)) Schla''fli notation, while compound 2 with blue-violet phosphorescence displays a one-dimensional perovskite structure with an infinite {[Cd(SCN)(3)](-)}(infinity) chain and exhibits both ferroelastic and dielectric switching characteristics.