Massoud RAFIZADEH, Vahid AMANI, Reza TAYEBEE

Synthesis of isomorphous prototypic $[CrFe_2O(AcO)_6(TEP)_3]Cl$ and $[CrFe_2O(AcO_6(TMP)_3]Cl$ As Oxo-centered hetero tri-nuclear carboxylate complexes

$[CrFe_2O(AcO)_6(TEP)_3]Cl$, (1), and $[CrFe_2O(AcO_6(TMP)_3]Cl$, (2), were prepared by replacing 3 water molecules in the $[CrFe_2O(AcO)_6(H_2O)_3]Cl$ complex with triethyl- and trimethyl-phosphates, respectively. FT-IR spectroscopy confirmed an oxo-centered, carboxylate-bridged, heteronuclear triangular structure for the title compounds. $M_3O$ and $MO_4$ units adopted $D_{3h}$ and $D_{4h}$ local symmetry, respectively, and are surrounded by 6 bridging acetates with $C_{2v}$ local symmetry.

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