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Thermal stabilities, electronic properties and structures of metformin-metal complexes

Molecular orbital investigation

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Abstract

The atomic superposition and electron delocalization molecular orbital (ASED-MO) theory was used to calculate structures and relative stabilities of metformin-metal complexes. The relative stabilities and decomposition pathways were discussed in terms of bond order, binding energy and the nature of charge on the central metal atom. The electronic transitions and their energy gaps were also studied. The optimization of the structures shows that the most stable state is distorted from planarity for CoII and NiII complexes.

Zusammenfassung

Unter Einsatz der ASED-MO-Theorie wurden Strukturen und relative Stabilitäten von Metformin-Metallkomplexen berechnet. Als Funktion von Bindungsordnung, Bindungsenergie und der Art der Ladung des Zentralatoms wurden relative Stabilität und Zersetzungswege discutiert. Elektronenübergänge und deren verbotene Energiebänder wurden ebenfalls untersucht. Die Optimierung der Strukturen zeigte, daß für CoII- und NiII-Komplexe im stabilsten Zustand eine Deformierung der Planarität auftritt.

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Donia, A.M., Awad, M.K. Thermal stabilities, electronic properties and structures of metformin-metal complexes. Journal of Thermal Analysis 44, 1493–1498 (1995). https://doi.org/10.1007/BF02549235

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