Heat capacities and thermodynamic properties of CoPc and CoTMPP

Two metal-organic frameworks, Ca(2,6-NDC) (DMF) (1) and Mn 3 (2,6-NDC) 3 (DMF) 4 (2) (where 2,6-NDC = 2,6-naphthalene dicarboxylate and DMF = N,N 0 -dimethylformamide) have been solvothermally synthesized under optimized conditions and characterized by X-ray powder diffraction, elemental analysis, FT-IR spectroscopy, and TG analysis. The thermal decomposition characteristics were investigated under air atmosphere from 300 to 1,170 K (for 1) and from 300 to 971 K (for 2). The molar heat capacities were measured from 198 to 548 K (for 1) and from 198 to 448 K (for 2) by temperature modulated differential scanning calorimetry (TMDSC) for the first time. The fundamental thermodynamic parameters such as entropy and enthalpy variations with temperature were calculated based on the experimentally determined molar heat capacities.

Section: Heat Capacity Measurementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Determination of heat capacities and thermodynamic properties of two structurally unrelated but isotypic calcium and manganese(II) 2,6-naphthalene dicarboxylate-based MOFs

Jiang

Song

Jiao

et al. 2010

“…From the heat capacity, many other thermodynamic properties such as enthalpy and entropy can be calculated [15][16][17]. Temperature-modulated differential scanning calorimetry (TMDSC) is one of the easier and more accurate methods extensively developed for determining heat capacity [18,19].…”

Section: Introductionmentioning

confidence: 99%

Heat capacities and thermodynamic properties of a 3D Cu(II) supramolecular complex

Jiao

Wang

et al. 2012

A 3D supramolecule (H 3 O) 2 [Cu(2,6-pdc) 2 ]ÁH 2 O (pdc = pyridinedicarboxylate) has been solvothermally synthesized and characterized by X-ray powder diffraction and FT-IR spectrum. The thermal decomposition characteristics of the complex were investigated by thermogravimetric analysis, which revealed a three-step mass loss process. The low-temperature molar heat capacities of crystalline (H 3 O) 2 [Cu(2,6-pdc) 2 ]ÁH 2 O were measured by temperature-modulated differential scanning calorimetry for the first time. A phenomenon of glass transition was observed. The thermodynamic parameters such as entropy and enthalpy relative to 298.15 K were calculated based on the above molar heat capacity data.

“…The structure and principle of the calorimeter have been described in details [15,16]. Recently, it has been greatly developed for directly determining heat capacities for various materials successfully [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Synthesize, crystal structure, heat capacities and thermodynamic properties of a potential enantioselective catalyst

Zeng

Cao

et al. 2011

A new potential enantioselective catalyst derived from ferrocene, 1-{(R)-1-[(S)-2-(diphenylphosphino)ferrocenyl]ethyl}-benzimidazole (DPFEB), was prepared and its absolute structure was characterized by means of single crystal X-ray diffraction. The molar heat capacity of DPFEB was measured by means of temperature modulated differential scanning calorimetry over the temperature range of 200-530 K, and the thermodynamic functions of [H T -H 298.15 ] and [S T -S 298.15 ] were calculated. Further more, thermogravimetry experiment revealed that DPFEB exhibited a three step thermal decomposition process with the final residual of 28.7%.