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3-Oxo-2,3-dihydro-1H-inden-4-yl acetate.

ABSTRACT: In the title compound, C(11)H(10)O(3), the 1-indanone unit is essentially planar (r.m.s. deviation = 0.036?Å). In the crystal, mol-ecules are linked by non-classical C-H?O hydrogen bonds, forming a C(6) chain along [010].

SUBMITTER: Lin HY

PROVIDER: S-EPMC3515182 | biostudies-other | 2012 Nov

REPOSITORIES: biostudies-other

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3-Oxo-2,3-dihydro-1H-inden-4-yl acetate.

Lin Hong-Yi HY Chang Che-Wei CW Tsai Hsing-Yang HY Luo Ming-Hui MH Chen Kew-Yu KY

Acta crystallographica. Section E, Structure reports online 20121006 Pt 11

In the title compound, C(11)H(10)O(3), the 1-indanone unit is essentially planar (r.m.s. deviation = 0.036 Å). In the crystal, mol-ecules are linked by non-classical C-H⋯O hydrogen bonds, forming a C(6) chain along [010]. ...[more]

PMID: 23284409

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2,4-Dibromo-2,3-dihydro-1H-inden-1-yl acetate.

Project description:In the title compound, C(11)H(10)Br(2)O(2), the cyclo-pentene ring fused to the benzene ring adopts an envelope conformation, with the C atom attached to the Br atom as the flap. The crystal structure does not exhibit any classical hydrogen bonds. The mol-ecular packing is stabilized by van der Waals forces and ?-? stacking inter-actions with a centroid-centroid distance of 3.811?(4)?Å.

| S-EPMC3379444 | biostudies-literature

N-Cyclo-pentyl-N-(3-oxo-2,3-dihydro-1H-inden-1-yl)acetamide.

Project description:The title mol-ecule, C(16)H(19)NO(2), consists of an indane moiety, which is connected through an N atom to an acetamide group and a cyclo-pentane ring. The N atom adopts planar triangular geometry. Inter-molecular inter-actions, such as π-π stacking or hydrogen bonding, were not observed.

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Ethyl 2-(2-oxo-4-phenyl-2,3-dihydro-1H-1,5-benzodiazepin-1-yl)acetate.

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1-{[(2,3-Dihydro-1H-inden-2-yl)-oxy]meth-yl}quinazoline-2,4(1H,3H)-dione.

Project description:In the title mol-ecule, C(18)H(16)N(2)O(3), the five-membered ring has an envelope conformation, with the substituted C atom deviating by 0.342 (4) Å from the mean plane P calculated for the remainder of the non-H atoms of the 2,3-dihydro-1H-indene fragment. The mean planes of quinazoline-2,4(1H,3H)-dione fragment and P form a dihedral angle of 59.08 (4)°. In the crystal, pairs of N-H⋯O hydrogen bonds link mol-ecules into inversion dimers, and weak C-H⋯O hydrogen bonds and π-π inter-actions between the benzene rings of the quinazoline ring systems [centroid-centroid distance = 3.538 (3) Å] further consolidate the packing.

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Ortho-rhom-bic polymorph of (2E)-2-(2,3-dihydro-1H-inden-1-yl-idene)-2,3-di-hydro-1H-inden-1-one.

Project description:The title compound, C(18)H(14)O, is polymorphic at 123 K. The ortho-rhom-bic form reported herein has two independent mol-ecules in the asymmetric unit, with mol-ecular volume 313.5 Å(3). The previously reported triclinic (P-1) form [Raston & Scott (2000 ▶). Green Chem., 2, 49-52] has mol-ecular volume 309.6 Å(3) at the same temperature. All three mol-ecules deviate significantly and systematically from the putative C(s) symmetry (δ(r.m.s.) = 0.0265, 0.0256, 0.0497 Å). Comparison of the two molecules in the orthorhombic polymorph shows that 16 of the 19 equivalent pairs of framework atoms have a mirror-image pattern of deviations (above/below plane), suggesting that the two are quasi-enanti-omorphs. The pattern of deviations in the triclinic form is nearly the same (13 of 19 atom pairs) as the ortho-rhom-bic form.

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(1E,2E)-1,2-Bis(2,3-dihydro-1H-inden-1-yl-idene)hydrazine.

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(2E)-2-(Furan-2-yl-methyl-idene)-2,3-dihydro-1H-inden-1-one.

Project description:In the title compound, C(14)H(10)O(2), the five-membered ring of the inden-1-one residue is almost planar (r.m.s. deviation = 0.035?Å). A twist about the single bond linking the two residues is evident [C-C-C-C torsion angle = -13.2?(5)°]. The three-dimensional architecture is stabilized by C-H?O (involving the trifurcated carbonyl O atom), C-H?? and ?-? inter-actions [between the five- and six-membered rings of inden-1-one residues; ring centroid-centroid distance = 3.7983?(17)?Å]. The sample studied was a non-merohedral twin; the minor component refined to approximately 36%.

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(E)-2-[4-(Trifluoro-meth-yl)benzyl-idene]-2,3-dihydro-1H-inden-1-one.

Project description:In the title mol-ecule, C(17)H(11)F(3)O, the indan ring system and the trifluoro-methyl-substituted benzene ring are approximately individually planar and form a dihedral angle of 1.81?(5)° with each other. In the crystal, mol-ecules are linked by pairs of weak bifurcated (C-H)(2)?O hydrogen bonds to form centrosymmetric dimers, generating R(2) (1)(6) and R(2) (2)(10) ring motifs. These dimers are connected by further weak C-H?O hydrogen bonds into one-dimensional chains along the b axis. Weak C-H?? inter-actions are also present.

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(E)-2-[4-(Piperidin-1-yl)benzyl-idene]-2,3-dihydro-1H-inden-1-one.

Project description:In the title compound, C(21)H(21)NO, the indene ring system is essentially planar with a maximum deviation of 0.066?(1)?Å and makes dihedral angles of 7.93?(6) and 2.43?(6)°, respectively, with the benzene plane and the mean plane of the piperidine ring. These latter two planes make a dihedral angle of 7.61?(7)°. In the crystal, mol-ecules are linked by C-H?O inter-actions, forming infinite chains along the b axis.

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(2E)-2-[(2H-1,3-Benzodioxol-5-yl)methyl-idene]-2,3-dihydro-1H-inden-1-one.

Project description:In the title compound, C(17)H(12)O(3), each of the five-membered rings in the inden-1-one and 1,3-benzodioxole residues is almost planar (r.m.s. deviations = 0.041 and 0.033 Å, respectively). A small twist about the single bond linking the two residues is evident [the C-C-C-C torsion angle = 8.7 (4)°]. Supra-molecular zigzag layers propagating in the ac plane are formed in the crystal via C-H⋯O inter-actions. The layers are linked via π-π inter-actions between the five- and six-membered rings of 1,3-benzodioxole residues [centroid-centroid distance = 3.4977 (14) Å].

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