ABSTRACT

Vapor pressure, liquid heat capacities, and phase change enthalpies and temperatures for technologically important organometallic precursor tetrakis(tert-butoxy)hafnium are reported. The vapor pressure was measured using the static method in the temperature range from 280 to 308 K. The standard vaporization enthalpy was derived from the temperature dependence of vapor pressure data. The liquid heat capacities were determined by Calvet calorimetry in the temperature range from 294 to 350 K. The enthalpy and temperature of fusion were measured by differential scanning calorimetry. The present study significantly extends and updates the information on physico-chemical properties for this material.

Compounds

#	Formula	Name
1	C16H36HfO4	hafnium(IV) 2-methylpropan-2-olate

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			Crystal Liquid Air at 1 atmosphere	DSC	1
POMD	1	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Small sample (50 mg) DSC	24
POMD	1	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid		Liquid Gas	Closed cell (Static) method	36
POMD	1	Solid-liquid equilibrium temperature, K ; Crystal		Pressure, kPa; Crystal	Crystal Liquid	DTA	4

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Vapor pressure, heat capacities, and phase transitions of tetrakis(tert-butoxy)hafnium

Fulem, M.[Michal], Ruzicka, K.[Kvetoslav]

ABSTRACT