ABSTRACT

The molar heat capacities Cp,m of seven crystalline compounds (uridine, 2'-deoxyuridine, 5-iodouridine, 5-bromouridine, 5-iodo-2'-deoxyuridine, 5-bromo-2'-deoxyuridine, and 5-methyl-2'-deoxyuridine (thymidine)) were determined using a differential scanning calorimeter (SETARAM TG-DSC 111). The measurements were made over the temperature range from (298.15 to 368.15) K. The values of molar heat capacities versus temperature Cp,m ) f(T) were determined. The standard molar heat capacities Cp,m 0 were compared with those calculated by the Chickos method. The contributions of the C-CH3 group, as well as Br and I atoms, in the value of Cp,m 0 were evaluated.

Compounds

#	Formula	Name
1	C9H12N2O6	uridine
2	C9H12N2O5	2'-deoxyuridine
3	C9H11IN2O6	2,4-dihdroxy-5-iodo-1-.beta.-D-ribofurnosylpyrimidine
4	C9H11BrN2O6	5-bromouridine
5	C9H11IN2O5	5-iodo-2'-deoxyuridine
6	C9H11BrN2O5	5-bromo-2'-deoxyuridine
7	C10H14N2O5	thymidine

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 heat capacity at constant pressure, J/K/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	Large sample (1 g) DSC	15
POMD	2	Molar heat capacity at constant pressure, J/K/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	Large sample (1 g) DSC	15
POMD	3	Molar heat capacity at constant pressure, J/K/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	Large sample (1 g) DSC	15
POMD	4	Molar heat capacity at constant pressure, J/K/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	Large sample (1 g) DSC	15
POMD	5	Molar heat capacity at constant pressure, J/K/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	Large sample (1 g) DSC	15
POMD	6	Molar heat capacity at constant pressure, J/K/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	Large sample (1 g) DSC	15
POMD	7	Molar heat capacity at constant pressure, J/K/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	Large sample (1 g) DSC	15

Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Molar Heat Capacities of Some Derivatives of Uridine and 2'-Deoxyuridine

Szterner, P.[Piotr]

ABSTRACT