Four solid phases of [Zn(DMSO)6](ClO4)2 have been detected by differential scanning calorimetry (DSC). Specifically, the phase transitions were detected between: metastable phase KII - overcooled phase K0 at T = 315 K, stable phase KIb - stable phase KIa at T = 341 K, stable phase KIa - stable phase K0 at T = 355 K. At Tm2 = 389 K crystals partially and at Tm1 = 465 K completely melts. From the entropy change values it was concluded that the phases: K0 and K0' are the orientationally dynamically disordered phases, so called ODDIC crystals, and phases KIa, KIb and metastable KII are dynamically ordered but with some degree of positional disorder.
Compounds
#
Formula
Name
1
C12H36Cl2O14S6Zn
Hexadimethylsulphoxidezinc(II) chlorate(VII)
Datasets
The table above is generated from the ThermoML associated json file (link above).
POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied;
the numbers refer to the table of compounds on the left.
Type
Compound-#
Property
Variable
Constraint
Phase
Method
#Points
POMD
1
Molar enthalpy of transition or fusion, kJ/mol ; Crystal 3
Crystal 3
Crystal 2
Gas
DSC
1
POMD
1
Molar enthalpy of transition or fusion, kJ/mol ; Crystal 2