metal-organic compounds
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In the title complex, [CuICuII(CN)3(C4H12N2)2], the CuI and CuII ions and a bridging cyanide group lie on a twofold rotation axis. The CuII ion is in a slightly-distorted square-pyramidal coordination environment, with the N atoms of the two symmetry-related N-ethylethylenediamine ligands occupying the basal positions and an N-bonded cyanide group in the apical position. The CuI ion is in a trigonal-planar coordination environment, bonded to the C atom of the bridging cyanide group and to two terminal cyanide groups. In the crystal, N—HN hydrogen bonds involving two of the symmetry-unique N—H groups of the N-ethylethylenediamine ligands and the N atoms of the terminal cyanide ligands link the molecules into strands along [010].
metal-organic compounds
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In the title compound, [μ-(2,6,7-η:3,4,5-η)-cycloocta-2,4,6-trienone]bis(tricarbonyliron)(Fe—Fe), [Fe2(C8H8O)(CO)6], the diiron hexacarbonyl moiety has a sawhorse arrangement, with the OC—Fe—Fe—CO fragment forming the horizontal bar of the horse, and the other four carbonyl groups the legs. The Fe—Fe distance is 2.795 (2) Å. Each Fe atom is also bonded to three C atoms of the cyclooctatrienone ring. One Fe atom forms a σ-bond with one ring C atom, with Fe—C = 2.109 (2) Å, and also a metal–olefin π-bond with two C atoms on the other side of the ring, with Fe—C distances of 2.238 (2) and 2.236 (3) Å. The second Fe atom forms a η3-allyl bond with three other ring atoms, with Fe—C bond lengths of 2.158 (2), 2.062 (2), and 2.123 (3) Å. Counting the π- and π-allyl interactions as one bond, the coordinations of the Fe atoms can, respectively, be approximated as octahedral and trigonal bipyramidal.
organic compounds
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In the title compound, C22H32O4, the atoms of the methyl ester group and the alkoxy O atoms are all coplanar with the central aromatic ring, with an r.m.s. deviation of 0.008 Å. Bonds to the methylene and cyclohexyl groups are also very close to this plane, so that the molecule is essentially flat, apart from the cyclohexyl groups. The mean planes through the cyclohexyl groups are tilted by 30.08 (9) and 36.14 (7)° with respect to the central aromatic ring. In the crystal, pairs of molecules linked by C—HO hydrogen bonds form planar units which are stacked along the a axis, with an average interplanar distance of 3.549 (2) Å. Stacking appears to be stabilized by further weak C—HO hydrogen bonds.