TY - JOUR
T1 - Kinetics of the thermal dehydration of trans-fluoroaquobis(ethylenediamine)chromium(III) tetracyanometallate(II) [metal(II) = Ni(II), Pd(II) and Pt(II)]
AU - Ribas, J.
AU - Serra, M.
AU - Escuer, A.
AU - Baró, M. D.
PY - 1984/10/1
Y1 - 1984/10/1
N2 - The solid phase thermal deaquation-anation of trans-[CrF(H2O)(en)2][M(CN)4] (M = Ni, Pd, Pt; en = ethylenediamine) has been investigated by means of non-isothermal DSC and isothermal and non-isothermal TG measurements. The physical model for these reactions (nucleation, growth, diffusion or intermediates) has been found by comparison of the isothermal and non-isothermal TG data for all the principal g(α) expressions (0.2≤α≤0.8) and by the shape of the isothermal curves. The values found for activation energy are low (∼ 130 kJ mol-1 for the Ni compound, ∼ 140 kJ mol-1 for the Pd compound, and ∼ 100 kJ mol-1 for the Pt compound). These data permit the assignment of the deaquation-anation mechanism of the SN1 type involving a square-base pyramid activated complex and elimination of water as Frenkel defects. © 1984.
AB - The solid phase thermal deaquation-anation of trans-[CrF(H2O)(en)2][M(CN)4] (M = Ni, Pd, Pt; en = ethylenediamine) has been investigated by means of non-isothermal DSC and isothermal and non-isothermal TG measurements. The physical model for these reactions (nucleation, growth, diffusion or intermediates) has been found by comparison of the isothermal and non-isothermal TG data for all the principal g(α) expressions (0.2≤α≤0.8) and by the shape of the isothermal curves. The values found for activation energy are low (∼ 130 kJ mol-1 for the Ni compound, ∼ 140 kJ mol-1 for the Pd compound, and ∼ 100 kJ mol-1 for the Pt compound). These data permit the assignment of the deaquation-anation mechanism of the SN1 type involving a square-base pyramid activated complex and elimination of water as Frenkel defects. © 1984.
UR - https://www.scopus.com/pages/publications/25044473673
U2 - 10.1016/0040-6031(84)87187-7
DO - 10.1016/0040-6031(84)87187-7
M3 - Article
SN - 0040-6031
VL - 80
SP - 103
EP - 113
JO - Thermochimica Acta
JF - Thermochimica Acta
ER -