Title : Synthesis, Characterization and Crystal Structure of Novel Mixed Bridged Trinuclear Oxo-Centered Iro ( Synthesis, characterization and crystal structure of novel mixed bridged trinuclear oxo-centered iron(III), chromium(III) complexes containing terminal unsaturated carboxylato and acrylic acid dimer anion ligands )
Authors: Mohammad Yazdanbakhsh , Mohammad Hasan Alizadeh Ghanad , خرم دل , Frank ,
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Abstract
Abstract. Three new oxo-centered trinuclear mixed-bridged carboxylate complexes with terminal unsaturated ligands ([M2M(μ3-O)(μ-O2C3H3)5(μ-O4C6H7)(O2C3H3) (H2O)2]·2H2O [M Fe, M Fe (1); M Fe, M Cr (2); M Cr, M Fe (3)]) have been synthesized and characterized by means of elemental analyses, IR spectra and crystal structure analyses. The compounds crystallize isotypically in the orthorhombic space group type Pbcn with a 24.622(3)A ° , b 16.304(2)A ° , c 17.491(2)A ° , V 7021.5(15)A ° 3 (1), a 24.708(5)A ° , b 16.290(2)A ° , c 17.394(2)A ° , V 7001.0(18)A ° 3 (2), a 24.611(4)A ° , b 16.300(3)A ° , c 17.359(3)A ° , V 6964(2)A ° 3 (3), and Z 8. The infrared spectra show resolved bands arising from νasym(OCO) and νsym(OCO) vibrations of monodentate and bridging carboxylate ligands along with those of νasym(M2MO) vibrations in the complexes.
