Cd(NH2SO3)2·xH2O (x= 0, 2): new sulfamates with a unique coordination environment and reversible phase transitions

Centrosymmetric Cd(NH 2 SO 3 ) 2 ·2H 2 O and noncentrosymmetric Cd(NH 2 SO 3 ) 2 reveal their temperature- and humidity-induced reversible phase transitions.