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(RS)-Tricarbon-yl(η-1,3-diacet-oxy-5,5-dimethyl-cyclo-hexa-1,3-diene)iron(0).

ABSTRACT: In the title compound, [Fe(C(12)H(16)O(4))(CO)(3)], the diene moiety of the mol-ecule is virtually planar, with a C-C-C-C torsion angle of -1.4 (2)°. The six-membered ring exhibits a boat conformation, with torsion angles of 46.2 (2) and 46.5 (3)° for a double-bond and the two attached Csp(3) atoms. The Fe atom is coordinated to all four of the diene C atoms, with bond lengths between 2.041 (2) and 2.117 (2) Å. The Fe(CO)(3) tripod adopts a conformation with one CO ligand eclipsing the Csp(3)-Csp(3) single bond.

SUBMITTER: Romanski S

PROVIDER: S-EPMC3246956 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Hexamethyl 13,14-dioxapenta-cyclo-[8.2.1.1(4,7).0(2,9).0(3,8)]tetra-deca-5,11-diene-1,4,5,6,11,12-hexa-carboxyl-ate.

Project description:In the title compound, C(24)H(24)O(14), the stereochemistry at the cyclo-butane ring is cis-anti-cis and the -COOMe groups in the bicyclic rings are syn to each other. The mol-ecule lies on a twofold rotation axis. In the crystal, weak C-H?O hydrogen bonds connect mol-ecules into chains along [001], forming R(2) (2)(10) rings.

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Project description:In the crystal structure of the title compound, C(16)H(19)NO, mol-ecules are linked through a pair of N-H?O hydrogen bonds, forming chains along the a axis.

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Ethyl 2-amino-4,6-bis-(4-fluoro-phen-yl)cyclo-hexa-1,3-diene-1-carboxyl-ate.

Project description:In the title compound, C(21)H(19)F(2)NO(2), the cyclo-hexa-1,3-diene ring is in a distorted envelope conformation. The dihedral angles between the mean planes of the diene moiety and the two fluoro-phenyl rings are 42.8?(2) and 75.0?(5)°. The two fluoro-phenyl rings are inclined to one another by 87.0?(3)°. In the crystal, intra-molecular N-H?O hydrogen bonds and weak N-H?O and N-H?F inter-molecular inter-actions are observed forming an infinite two-dimensional network along [011].

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Chloridocyclo-hexyl[(1,2,5,6-η)-cyclo-octa-1,5-diene]platinum(II).

Project description:In the title complex, [Pt(C(6)H(11))Cl(C(8)H(12))], the Pt(II) ion lies in a distorted square-planar environment defined by the Cl and cyclo-hexyl C atoms and the mid-points of the two π-coordinated double bonds of cyclo-octa-1,5-diene. As a result of the different trans influences of the Cl atom and the cyclo-hexyl group, the Pt-C bonds trans to the cyclo-hexyl group are longer than those trans to the Cl atom.

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Penta-cyclo-[8.2.1.1(4,7).0(2,9).0(3,8)]tetra-deca-5,11-diene.

Project description:The title compound, C(14)H(16), was prepared through [2 + 2] cyclo-addition of norbornadiene. There are two independent mol-ecules in the asymmetric unit: each is centrosymmetric with the centroid of the four-membered ring located about an inversion center. Each mol-ecule possesses an exo-trans-exo conformation.

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2,5-Dichloro-3,6-diisopropyl-cyclo-hexa-2,5-diene-1,4-dione.

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Project description:The structure of the title compound, [Cr(C(10)H(12)O(2))(CO)(3)], is presented. The distorted piano-stool geometry features an off-center Cr(CO)(3) fragment which reduces contact with the dioxolane ring. The dioxolane ring, in twisted conformation, is syn-oriented towards the Cr(CO)(3) moiety.

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(±)-4,12,15,18,26-Penta-hydroxy-13,17-dioxahepta-cyclo-[14.10.0.0(3,14).0(4,12).0(6,11).0(18,26).0(19,24)]hexa-cosa-1,3(14),6(11),7,9,15,19,21,23-nona-ene-5,25-dione methanol disolvate.

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(η-Cyclo-penta-dien-yl)[(1,2,3,4,4a,12a-η)-naphtho-[2,3-b][1,4]benzodioxine]iron(II) hexa-fluoridophosphate.

Project description:At 296 (2) K, both complexed rings in the iron(II) complex cation of the title salt, [Fe(C(5)H(5))(C(16)H(10)O(2))]PF(6), are almost parallel [dihedral angle between planes = 2.4 (3)°]. The quaternary C atoms of the complexed arene ring are located at the longest distance from the Fe atom, with Fe-C distances of 2.112 (4) and 2.105 (3) Å, which are slightly longer than the average Fe-C distance for this ring (2.083 Å). The Fe ion is located 1.660 (1) and 1.543 (1) Å, respectively, from the cyclo-penta-dienyl and the complexed arene ring.

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Tricarbon-yl(?-flavone)chromium(0).

Project description:In the title compound, [Cr(C(15)H(10)O(2))(CO)(3)], the Cr(CO)(3) unit exhibits a three-legged piano-stool conformation. The chromium metal centre is coordinated by the phenyl ring of the flavone ligand [Cr-(phenyl centroid) distance = 1.709?(1)?Å]. The ligand is approximately planar, the dihedral angles between the ?-pyrone ring and the phenyl ring and between the ?-pyrone and the phenyl-ene ring being 2.91?(5) and 3.90?(5)°, respectively. The mol-ecular packing shows ?-? stacking between the flavone ligands of neighbouring mol-ecules.

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