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2,3-Bis(prop-2-yn-yloxy)naphthalene.

ABSTRACT: In the crystal structure of the title compound, C(16)H(12)O(2), no classical hydrogen bonds or aromatic ?-? stacking inter-actions were observed. The mol-ecules are linked into a three-dimensional framework by a combination of C-H?O and C-H??(arene) hydrogen bonds.

SUBMITTER: Yang GZ

PROVIDER: S-EPMC2960027 | biostudies-literature | 2008 Nov

REPOSITORIES: biostudies-literature

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2,3-Bis(prop-2-yn-yloxy)naphthalene.

Yang Guo-Zhong GZ Li Fu-An FA

Acta crystallographica. Section E, Structure reports online 20081120 Pt 12

In the crystal structure of the title compound, C(16)H(12)O(2), no classical hydrogen bonds or aromatic π-π stacking inter-actions were observed. The mol-ecules are linked into a three-dimensional framework by a combination of C-H⋯O and C-H⋯π(arene) hydrogen bonds. ...[more]

PMID: 21581354

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2,6-Bis(prop-2-yn-yloxy)naphthalene.

Project description:The title compound, C(16)H(12)O(2), crystallizes with one half-mol-ecule in the asymmetric unit. The mol-ecule lies on an inversion centre, located at the mid-point of the naphthyl group. All non-H atoms are almost coplanar, with a mean deviation from the least-squares plane of 0.0536 (11) Å. Mol-ecules are linked into a three-dimensional framework by a combination of C-H⋯O and C-H⋯π(arene) hydrogen bonds.

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4,4'-Bis(prop-2-yn-yloxy)biphen-yl.

Project description:The title compound, C(18)H(14)O(2), crystallizes with one half-mol-ecule in the asymmetric unit. The mol-ecule lies on an inversion center, located at the mid-point of the central C-C bond. As a result, the benzene rings are coplanar. No classical hydrogen bonds or stacking inter-actions are observed in the crystal structure.

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Project description:In the title compound, C(26)H(18)O(2), the mol-ecule is located on a twofold rotation axis. The two naphthyl ring planes in the mol-ecule are nearly perpendicular to each other [dihedral angle = 82.42 (1)°. No classical hydrogen bonds or aromatic π-π stacking inter-actions were observed.

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1,6-Bis(prop-2-yn-1-yl-oxy)naphthalene.

Project description:The title compound, C(16)H(12)O(2), contains two prop-2-yn-1-yl-oxy groups attached to a naphthalene ring system at the 1- and 6-positions. The crystal packing includes an inter-molecular C-H?? inter-action between a terminal ethynyl H atom and an ethynyl group on a glide-related mol-ecule and another inter-action between an O-atom-linked methyl-ene H and an ethynyl group of a different glide-related mol-ecule.

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2,7-Bis(prop-2-yn-1-yl-oxy)naphthalene.

Project description:The title compound, C(16)H(12)O(2), was synthesized from naphthalene-2,7-diol and prop-2-ynyl 4-methyl-benzene-sulfonate in the presence of sodium hydride. The crystal packing exhibits inter-molecular non-classical C-H?O hydrogen bonds and C-H?? inter-actions.

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9,9-Bis[4-(prop-2-yn-yloxy)phen-yl]-9H-fluorene.

Project description:In the title compound, C(31)H(22)O(2), the bond angle at the C atom belonging to the five-membered ring of the fluorene system is opened to 112.64?(12)°. The two benzene rings are twisted with respect to the fluorene ring system at dihedral angles of 72.81?(6) and 81.83?(6)°. One C(ar-yl)-O-C-C fragment is extended, with a C-O-C-C torsion angle of -178.77?(13)°, but the other C(ar-yl)-O-C-C fragment is bent, with a C-O-C-C torsion angle of 64.78?(19)°. Inter-molecular weak C-H?O hydrogen bonding is present in the crystal structure.

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Project description:In the title compound, C(13)H(9)NO(3), the dihedral angle between the benzene and maleimide rings is 64.1 (2)°. In the crystal structure, mol-ecules interact via C-H⋯O inter-actions.

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1-(Prop-2-yn-yl)indoline-2,3-dione.

Project description:The structure of the title compound, C11H7NO2, is isotypic to that of its homologue, 1-octylindoline-2,3-dione [Qachchachi et al. (2013 ▶). Acta Cryst. E69, o1801]. The indoline ring and the two carbonyl O atoms are approximately coplanar, the largest deviation from the mean plane being 0.021 (1) Å for one of the O atoms. The mean plane through the fused ring system is nearly perpendicular to the propynyl group, as indicated by the N-C-C-C torsion angle of 77.9 (1)°. In the crystal, mol-ecules are linked by C-H⋯O hydrogen bonds and π-π inter-actions between benzene rings [inter-centroid distance = 3.5630 (10) Å], forming a three-dimensional structure.

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1,8-Bis(benz-yloxy)-3,6-diiodo-naphthalene.

Project description:In the crystal structure of the title compound, C(24)H(18)I(2)O(2), one benzene ring is almost coplanar with the naphthyl system [dihedral angle = 6.6 (4)°], whereas the other is almost orthogonal [73.1 (2)°]. The crystal structure is consolidated by C-H⋯O and C-H⋯π inter-actions.

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2,4-Bis[(prop-2-yn-yl)-oxy]benzaldehyde.

Project description:In the title compound, C(13)H(10)O(3), two prop-2-yn-yloxy groups are attached to the benzaldehyde ring at positions 2 and 6. The crystal packing features C-H⋯O inter-actions.

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