The mixed iron(III) complex, namely, 0.8[diaqua(bromo)bis(nitrato-O,Os’)iron(III)] 0.2[diaqua(dibromo)(nitrato-O,Os’)iron(III)] 18-crown-6 monohydrate, was obtained and studied by X-ray diffraction analysis. Its structure (a=8.250 Å, b=14.910 Å, c=10.330 Å, β=113.38°, space group P21/m, Z=2) was solved by the direct method and refined by the full-matrix least-squares method in the anisotropic approximation to R=0.117 from 2140 independent reflections (CAD4 automated diffractometer, λMOK α). The structure (in crystallographic plane m) contains the hydrate water molecule and randomly disordered [FeBr1.2(NO3)1.8(H2O)2] and 18-crown-6 molecules, which are united through hydrogen bonds into chains running along the axis x. The Fe3+ cation does not interact with the 18-crown-6 molecule; i.e., this complex is not a host-guest compound.
Russian Journal of Coordination Chemistry – Springer Journals
Published: Mar 4, 2006
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