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Synthesis, characterization and crystal structure determination of iron(III) hetero-ligand complexes containing 2,2 `-bipyridine, 5,5 `-dimethyl-2,2 `-bipyridine and chloride, Fe(bipy)Cl-4bipy center dot H and Fe(dmbipy)(2)Cl-2FeCl4

, , and . POLYHEDRON, 26 (15): 4257-4262 (September 2007)
DOI: {10.1016/j.poly.2007.05.050}

Abstract

The complex Fc(bipy)Cl4bipy-H (1) (bipy is 2,2'-bipyridine) was prepared from the reaction of FeCl3 center dot 6H(2)O with 2,2'-bipyridine in a 0.1 M aqueous solution of HCl. The same method was employed to make Fe(dmbipy)(2)Cl-2FeCl4(2) (dmbipy is 5,5'-dimethyl-2,2'bipyridine). Both complexes were characterized by IR, UV-Vis and H-1 NMR spectroscopies and single-crystal X-ray diffraction. These complexes are HS with a spin multiplicity of 6. Crystal data for I at 20 degrees C: orthorhombic, space group Pna2(1), a = 15.938(2) angstrom. b = 9.3068(15) angstrom, c = 14.513(3) angstrom, Z = 4, R, = 0.0406 and for 2 at 20 degrees C: triclinic, space group P \$(1) over bar \$, a = 8.6072(13) angstrom, b = 18.008(3) angstrom, c = 20.311(3) angstrom, alpha = 103.652(13)degrees,beta = 95.421(12)degrees, gamma = 98.724(13)degrees, Z = 4, R-1 = 0.0634. (c) 2007 Elsevier Ltd. All rights reserved.

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