Thermal degradation of coordination polymer [Cd(N-Boc-gly)2(H2O)2]n

Maja Šumar-Ristovića, Katarina Anđelkovića, Dejan Poletib, Dragica M. Minićc

 aFaculty of Chemistry, University of Belgrade, Serbiab Faculty of Technology and Metallurgy, University of Belgrade, SerbiacFaculty of Physical Chemistry, University of Belgrade, Serbia

The step of dehydration can be treated as single step process, but the other two steps are complex ones involving more than one elementary step occurring as two multi step processes involving parallel and consecutive reactions of ligand’s fragmentation.

Thermal degradation of coordination polymer is a three-step process involving loss of two molecules of coordinated water, followed by loss of two C6H5CH2O− fragments and further ligand chain degradation continues with loss of two −C(=O)NHCH2− fragments.

Kinetic triplet for step of dehydration is:

as conversion function and Einv = 170.4±6.4 kJ mol-1 and Zinv = 2.6·1023 as invariant kinetic parameters.

The proposed mechanisms of all steps are in accordance with the crystal structure of the examined coordinated polymer.