The reaction between the magnesium beta-diketonate complex Mg(tmhd)2(H2O)2 and 1 equiv. of N,N,N',N'- tetramethylethylenediamine (tmeda =Me2NCH2CH2NMe2) in hexane at room temperature yielded Mg(tmhd)2(tmeda). The standard enthalpy of sublimation (83.2+-2.3 kJ mol-1) and entropy of sublimation (263+-6.3 J mol-1 K-1) of Mg(tmhd)2(tmeda) were obtained from the temperature dependence vapour pressure, determined by adopting a horizontal dual arm single furnace thermogravimetric analyser as a transpiration apparatus. Fromthe observed melting point depression DTA, the standard enthalpy of fusion (58.3+-5.2 kJ mol-1) was evaluated, using the ideal eutectic behaviour of Mg(tmhd)2(tmeda) as a solvent with bis(2,4-pentanedionato)magnesium(II), Mg(acac)2 as a non-volatile solute.
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
2
Molar enthalpy of transition or fusion, kJ/mol ; Crystal