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Open Access Crystal structure of bis[4-(1H-pyrrol-1-yl)phenyl] ferrocene-1,1′-dicarboxylate: a potential chemotherapeutic drug

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The title iron(II) complex, [Fe(C16H12NO2)2], crystallizes in the orthorhombic space group Pbca with the Fe2+ cation positioned on an inversion center. The cyclopentadienyl (Cp) rings adopt an anti conformation in contrast with other substituted ferrocenes in which the Cp rings appear in a nearly eclipsed conformation. The Cp and the aromatic rings are positioned out of the plane, with a twist angle of 70.20 (12)°, and the C(Cp)—C(CO) bond length is shorter than a typical C—C single bond, which suggests a partial double-bond character and delocalization with the Cp π system. The structure of the complex is compared to other functionalized ferrocenes synthesized in our laboratory.
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Document Type: Research Article

Affiliations: 1: University of Puerto Rico, Department of Chemistry, PO Box 9019, Mayaguez, Puerto Rico 00681, USA 2: University of California-San Diego, Department of Chemistry, Urey Hall 5128, 9500 Gilman Drive, La Jolla, CA 92093-0358, USA

Publication date: January 1, 2015

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