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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
Author(s) -
Yazdanbakhsh Mohammad,
Alizadeh M. H.,
Khorramdel H. Zare,
Frank W.
Publication year - 2007
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200700090
Subject(s) - carboxylate , orthorhombic crystal system , chemistry , dimer , denticity , crystallography , crystal structure , infrared spectroscopy , chromium , ion , stereochemistry , organic chemistry
Three new oxo‐centered trinuclear mixed‐bridged carboxylate complexes with terminal unsaturated ligands ([M 2 M′(μ 3 ‐O)(μ‐O 2 C 3 H 3 ) 5 (μ‐O 4 C 6 H 7 )(O 2 C 3 H 3 ) (H 2 O) 2 ]·2H 2 O [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) Å, b = 16.304(2) Å, c = 17.491(2) Å, V = 7021.5(15) Å 3 ( 1 ), a = 24.708(5) Å, b = 16.290(2) Å, c = 17.394(2) Å, V = 7001.0(18) Å 3 ( 2 ), a = 24.611(4) Å, b = 16.300(3) Å, c = 17.359(3) Å, V = 6964(2) Å 3 ( 3 ), and Z = 8. The infrared spectra show resolved bands arising from ν asym (OCO) and ν sym (OCO) vibrations of monodentate and bridging carboxylate ligands along with those of ν asym (M 2 M′O) vibrations in the complexes.