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Enthalpies of reaction of lanthanide trifluoroacetate trihydrate with 2-azacyclononanone to form lanthanide trifluoroacetate-tris 2-azacyclononanone |
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| Authors: | Dulce MA Melo Ótom A de Oliveira Pedro O Dustan |
| Institution: | a Departamento de Química, Universidade Federal do Rio Grande do Norte, Cx. Postal 1662, 59078-970 Natal, Rio Grande do Norte, Brazil b Instituto de Química, Universidade Estadual de Campinas, Cx. Postal 6154, 13084-971 Campinas, São Paulo, Brazil c Departamento de Química, Universidade Federal de Roraima, Cx. Postal 167, 69301-970 Boa Vista, Roraima, Brazil |
| Abstract: | The condensed phase, acid-base reaction enthalpy for Ln(tfa)·3H2O (s) + 3aza (s) → Ln(tfa)3·3aza (s) + 3H2O;  (kJ mol−1) = −33.90 ± 1.54, −2.10 ± 1.25, −9.40 ± 2.10, 0.05 ± 2.27 and 2.46 ± 1.45 for the Pr, Nd, Sm, Eu and Tb compounds, respectively, where tfa, the trifluoroacetate, and aza, the 2-azacyclononanone, were measured by calorimetry. |
| Keywords: | Cycloazanonanone Lanthanides Enthalpy |
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