Tetraaqua‐1κ4O‐bis(ɛ‐caprolactam‐1κO)‐μ‐cyano‐1:2κ2N:C‐pentacyano‐2κ5C‐iron(III)yttrium(III), a novel cyano‐bridged dinuclear complex |
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Authors: | Yi He Bei Chuan Zhou Hui‐Zhong Kou Ming Xiong Ru‐Ji Wang Yadong Li |
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Abstract: | Using caprolactam as a ligand, the novel title cyano‐bridged yttrium(III)–ferricyanide complex, [Y(caprolactam)2(H2O)4Fe(CN)6] or [FeY(CN)6(C6H11NO)2(H2O)4], has been synthesized and structurally characterized. The Y atom is seven‐coordinate and has approximately pentagonal–bipyramidal stereochemistry, with water molecules occupying apical positions. Of the five ligands in equatorial positions, one is the N‐bound bridging cyano group, and flanking this are two O‐bound caprolactam moieties, which are markedly inclined towards the bridged ferricyanide moiety such that they partially envelop it. Water molecules occupy the remaining two equatorial positions. The Y—N—C—Fe—C—N sequence of atoms lies on a crystallographic twofold axis and is therefore perfectly linear, which has not been observed previously in cyano‐bridged bimetallic complexes. |
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