Stabilization of Metal d-Electrons in Mixed-Ligand Complexes

Stabilization of Metal d-Electrons in Mixed-Ligand Complexes 

The following generic ligand dissociation reaction is proposed to analyze the onset of Tg in macromolecule-metal complexes with enhanced glass-transition temperatures relative to the imdiluted polymers  

The rule of average envirotunents was invoked to calculate 10 Dq for mixed ligand complexes that are 6-coordinate below Tg and 5-coordinate above T. The averaging was performed as follows. For 6-coordinate complexes with three different types of ligands, denoted by M +(La)2(Lb)2(Lc)2, one predicts lODq (kj/mol) via Jorgensen s parameters  

For 5-coordinate complexes with three different types of hgands, denoted by M (La)2(Lb)2(Lc), Jorgensen s prediction of lODq (Id/mol) 

Consideration of Interelectronic Repulsion and Aq When There is Ambiguity in the d-Electron Configuration for Complexes with Pseudo-Octahedral Symmetry 

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