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{2,7-Dimeth-oxy-8-[4-(2-methyl-prop-yl)benzo-yl]naphthalen-1-yl}[4-(2-methyl-prop-yl)phen-yl]methanone.

ABSTRACT: In the mol-ecule of the title compound, C34H36O4, the two 4-isobutyl-benzoyl groups at the 1- and 8-positions of the naphthalene ring system are aligned almost anti-parallel, and the benzene rings make a dihedral angle of 21.59 (7)°. The dihedral angles between the benzene rings and the naphthalene ring system are 69.26 (6) and 64.29 (5)°. There are no classical hydrogen bonds in the structure, but inversion-related mol-ecules engage in π-π stacking, with an inter-planar spacing between related naphthalene groups of 3.4120 (16) Å.

SUBMITTER: Sasagawa K

PROVIDER: S-EPMC3588949 | biostudies-literature |

REPOSITORIES: biostudies-literature

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(2,7-Dimeth-oxy-naphthalen-1-yl)(phen-yl)methanone.

Project description:The asymmetric unit of the title compound, C(19)H(16)O(3), contains three independent conformers. Each of the three conformers has essentially the same feature of non-coplanar aromatic rings whereby the aroyl group at the 1-position of the naphthalene ring is twisted in a perpendicular manner to the naphthalene ring. The dihedral angles between the benzene ring planes and the naphthalene ring systems are 75.34 (7), 86.47 (7) and 76.55 (6)° in the three conformers. The crystal structure is stabilized by inter-molecular C-H⋯O hydrogen bonds.

| S-EPMC2983196 | biostudies-literature

(2,7-Dimeth-oxy-naphthalen-1-yl)(4-phen-oxy-phen-yl)methanone.

Project description:In the title mol-ecule, C25H20O4, the naphthalene and phen-oxy groups are oriented nearly perpendicular with respect to the benzene ring of the benzoyl group, with dihedral angles of 89.61?(5) and 86.13?(6)°, respectively. The crystal structure features C-H?O and C-H?? inter-actions.

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[8-(4-But-oxy-benzo-yl)-2,7-dimeth-oxy-naphthalen-1-yl](4-but-oxy-phen-yl)methanone.

Project description:The mol-ecule of the title compound, C(34)H(36)O(6), is located on a twofold rotation axis. The two 4-but-oxy-benzoyl groups at the 1- and 8-positions of the naphthalene ring system are aligned almost anti-parallel. The dihedral angles between the benzene rings and the naphthalene ring system are 71.70 (4)°. In the crystal, the mol-ecules are connected via C-H⋯π inter-actions into a layer parallel to (010).

| S-EPMC3238999 | biostudies-literature

(2,7-Dimeth-oxy-naphthalen-1-yl)(4-meth-oxy-phen-yl)methanone.

Project description:In the mol-ecule of the title compound, C20H18O4, the dihedral angle between the naphthalene ring system and the benzene ring is 81.74?(5)°. An inter-molecular C-H?O inter-action is formed between an H atom at the 6-position of the naphthalene ring and the O atom of the meth-oxy group at the 7-position.

| S-EPMC3588548 | biostudies-literature

(3,5-Dimethyl-phen-yl)[8-(3,5-dimethyl-benzo-yl)-2,7-dimeth-oxy-naphthalen-1-yl]methanone.

Project description:In the title mol-ecule, C(30)H(28)O(4), the inter-planar angle between the two benzene rings of the 3,5-dimethyl-benzoyl groups is 50.35?(7)°. The dihedral angles between the two benzene rings and the naphthalene ring system are 81.87?(6) and 83.55?(6)°. In addition, the conformations of the pairs of methyl groups and their counterparts differ from each other though their environment is very similar. In the crystal, weak C-H?O inter-actions occur.

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[2,7-Dimeth-oxy-8-(2,4,6-trimethyl-benzo-yl)naphthalen-1-yl](2,4,6-trimethyl-phen-yl)methanone.

Project description:In the title compound, C(32)H(32)O(4), the dihedral angle between the two benzene rings of the 2,4,6-trimethyl-benzoyl groups is 71.43?(7)°. The dihedral angles between the two benzene rings and the naphthalene ring system are 81.58?(5) and 84.92?(6)°. An intra-molecular C-H?O inter-action is observed.

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[8-(4-Chloro-benzo-yl)-2,7-dimeth-oxy-naphthalen-1-yl](2,4,6-trimethyl-phen-yl)methanone.

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[2,7-Dimeth-oxy-8-(4-propyl-benzo-yl)naphthalen-1-yl](4-propyl-phen-yl)methanone.

Project description:In the title compound, C(32)H(32)O(4), the 4-propyl-benzoyl groups at the 1- and 8-positions of the naphthalene ring system are aligned almost anti-parallel, and their benzene rings make a dihedral angle of 8.64 (10)°. The dihedral angles between the naphthalene ring system and the benzene rings are 69.37 (8) and 69.45 (8)°. In the crystal, C-H⋯O inter-actions link adjacent mol-ecules via their aroyl groups.

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(2,7-Dimeth-oxy-naphthalen-1-yl)(3-nitro-phen-yl)methanone.

Project description:The title compound, C(19)H(15)NO(5), has an intra-molecular C-H?O=C hydrogen bond between a naphthalene H atom and the O atom of the carbonyl group. The inter-planar angle between the naphthalene ring system and the benzene ring is 69.59?(5)°. The dihedral angle between the bridging carbonyl C-C(=O)-C plane and the naphthalene ring system is 61.02?(6)°, which is far larger than that between the bridging carbonyl plane and the benzene ring [12.68?(7)°]. The nitro group is slightly out of the plane of the benzene ring [O-N-C-C torsion angle = 4.97?(17)°]. In the crystal, the packing is mainly stabilized by C-H?O inter-actions between an H atom of the benzene ring and an O atom of the nitro group.

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(2,7-Dimeth-oxy-naphthalen-1-yl)(4-fluoro-phen-yl)methanone.

Project description:In the title compound, C(19)H(15)FO(3), the dihedral angle between the naphthalene ring system and the benzene ring is 80.46?(4)°. In the crystal, mol-ecules are linked by inter-molecular C-H?O hydrogen bonds into chains parallel to the b axis.

| S-EPMC3120321 | biostudies-literature

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