In the title compound, C20H17NO3, the methyl-idene-cyclo-hexa-2,4-dienone moiety is approximately planar [maximum deviation = 0.0615 (10) Å] and is oriented at diherdral angles of 69.60 (7) and 1.69 (9)° to the phenyl and hy-droxy-benzene rings, respectively. The amino group links with the carbonyl O atom via an intra-molecular N-H⋯O hydrogen bond, forming an S(6) ring motif. In the crystal, th...

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-mole...

The closely related title compounds, 3-(2,5-dimeth-oxy-3,4,6-tri-methyl-phen-yl)propyl methacrylate, C18H26O4 (I), and 3-(2,4,5-trimethyl-3,6-dioxo-cyclo-hexa-1,4-dien-yl)propyl methacrylate, C16H20O4 (II), are monomers suitable for the preparation of redox polymers. They consist of a propyl-methacrylate group and three methyl substituents on di-meth-oxy-benzene and quinone cores, respectively....

The title compound, C(20)H(20)Br(2)ClN(3)O(3), was synthesized by the condensation reaction of 2-chloro-5-nitro-benzaldehyde with 4-(2-amino-3,5-dibromo-benzyl-amino)cyclo-hexa-nol in a methanol solution. There are two independent mol-ecules in the asymmetric unit and in one mol-ecule the atoms of the cyclo-hexane ring are disordered over two sets of sites with refined occupancies of 0.657 (12)...

The title compound {systematic name: bis[1,4(η(5))-cyclo-penta-dien-yl]hexa-kis(μ-diethyl phosphito)-1:2κ(6)P:O;3:4κ(6)O:P-μ-ox-alato-2:3κ(4)O(1),O(2):O(1'),O(2')-dioxido-2κO,3κO-1,4-dicobalt(III)-2,3-divanadium(IV)}, [Co(2)V(2)(C(5)H(5))(2)(C(2)O(4))(C(4)H(10)O(3)P)(6)O(2)], is an oxalate-bridged dinuclear complex of oxovanadium(IV). The geometric center of the dimer lies on an inversion cente...

The title compound, C(23)H(23)NO, is the product of a tandem transformation of the double Mannich base bis-(1-oxo-1,2,3,4-tertrahydro-2-naphtho-ylmeth-yl)amine hydro-chloride in HBr solution upon heating. The tetra-hydro-pyridine ring has a non-symmetrical half-chair conformation, whereas the cyclo-hexa-diene and cyclo-hexene rings adopt non-symmetrical half-boat conformations. The dihedral ang...

The title compound, [Zr2(C10H15)4(C6H6N2)2]·C6H14, was obtained by the stoichiometric reaction of adipo-nitrile with [Zr(C10H15)2(η(2)-Me3SiC2SiMe3)]. Intra-molecular nitrile-nitrile couplings and deprotonation of the substrate produced the (1-imino-2-enimino)-cyclo-pentane ligand, which functions as a five-membered bridge between the two metal atoms. The Zr(IV) atom exhibits a distorted tetra-...

In the title compound, C34H28O4, the cyclo-hexa-diene ring has a screw-boat conformation with a torsion angle between the double bonds being on average ca 15° [15.2 (3) and -15.3 (3) in the two independent mol-ecules]. All four phenyl rings in both mol-ecules are arranged in a propeller-like conformation. The two mol-ecules exhibit S,R- and R,S- chirality, respectively, and are connected via C-...

The title compound, C16H24Cl2O, was synthesized in three steps from β-himachalene (3,5,5,9-tetra-methyl-2,4a,5,6,7,8-hexa-hydro-1H-benzo-cyclo-heptene), which was isolated from essential oil of the Atlas cedar (cedrus atlantica). The asymmetric unit contains two independent mol-ecules with similar conformations. Each mol-ecule is built up from two fused seven-membered rings and an additional th...

The title compound, C(22)H(13)ClF(6)S, is a hybrid diaryl-ethene derivative with one 3-thienyl substituent, and a Cl-substituted six-membered aryl unit bonded to the double bond of a hexa-fluoro-cyclo-pentene ring. In the crystal structure, the mol-ecule adopts a photo-active anti-parallel conformation that can undergo effective photocyclization reactions. The distance between the two reactive ...