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

ABSTRACT: 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.

SUBMITTER: Zhang T

PROVIDER: S-EPMC3343937 | biostudies-literature |

REPOSITORIES: biostudies-literature

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

Project description: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].

| S-EPMC3515182 | biostudies-other

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

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.

| S-EPMC3379431 | biostudies-literature

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.

| S-EPMC3435792 | biostudies-literature

N-(1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)acetamide-naphthalene-2,3-diol (1/1).

Project description:In the reaction of naphthalene-2,3-diol and 4-amino-anti-pyrine in the presence of acetic acid, the amine function is acetyl-ated and the resulting acetamide co-crystallizes with the diol in the title compound, C(13)H(15)N(3)O(2)·C(10)H(8)O(2), with 1:1 molar stoichiometry. The two components are linked by two O-H⋯O=C hydrogen bonds. One of the hy-droxy groups inter-acts with the pyrazolone carbonyl O atom and the other hy-droxy group inter-acts with the amide O atom of another component, generating a chain motif. Adjacent chains are linked into a layer motif via N-H⋯O inter-actions involving only the heterocyclic acetamide component.

| S-EPMC3007032 | biostudies-literature

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

Project description:In the title compound, C(18)H(16)N(2), there are two independent half-mol-ecules (A and B) in the asymmetric unit, each mol-ecule being completed by an inversion center situated in the mid-point of the central N-N bond. The mol-ecules themselves therefore are essentially planar with r.m.s. deviations of 0.015 (1) and 0.020 (1) Å, respectively. In the crystal, mol-ecules are connected via C-H⋯π inter-actions in which only type B mol-ecules are donors, while both A and B mol-ecules act as acceptors. As a result, type B mol-ecules are linked into infinite chains along b, which are inter-connected by molecules of type A.

| S-EPMC3435753 | biostudies-literature

2-(2,4-Dichloro-phen-yl)-N-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)acetamide.

Project description:In the crystal structure of the title compound, C19H17Cl2N3O2, the mol-ecules form dimers of the R2(2)(10) type through N-H?O hydrogen bonding. As a result of steric repulsion, the amide group is rotated with respect to both the dichloro-phenyl and 2,3-dihydro-1H-pyrazol-4-yl rings, making dihedral angles of 80.70?(13) and 64.82?(12)°, respectively. The dihedral angle between the dichloro-phenyl and 2,3-dihydro-1H-pyrazol-4-yl rings is 48.45?(5)° while that between the 2,3-dihydro-1H-pyrazol-4-yl and phenyl rings is 56.33?(6)°.

| S-EPMC3588232 | biostudies-literature

2-(2,6-Dichloro-phen-yl)-N-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)acetamide.

Project description:In the title compound, C19H17Cl2N3O2, the amide group is planar and, through N-H?O hydrogen bonding to an adjoining mol-ecule, forms dimers of the R2(2)(10) type. As a result of steric repulsion, the amide group is rotated with respect to both the dichloro-phenyl and 2,3-dihydro-1H-pyrazol-4-yl rings, making dihedral angles of 71.63?(11) and 57.93?(10)°, respectively. The dihedral angle between the dichloro-phenyl and 2,3-dihydro-1H-pyrazol-4-yl rings is 76.60?(10)° while that between the 2,3-dihydro-1H-pyrazol-4-yl and phenyl rings is 49.29?(7)°. The crystal structure also features weak C-H?O inter-actions.

| S-EPMC3588313 | biostudies-literature

2-(3,4-Dichloro-phen-yl)-N-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)acetamide.

Project description:In the title compound, C19H17Cl2N3O2, there are three mol-ecules (A, B and C) in the asymmetric unit and each differs in the conformation adopted. As a result of steric repulsion, the amide group is rotated with respect to both the dichloro-phenyl and 2,3-dihydro-1H-pyrazol-4-yl rings, making dihedral angles of 44.5?(2) and 56.2?(2)°, respectively in A, 51.1?(2) and 54.1?(2)° in B, and 53.8?(2) and 54.6?(2)° in C. The dihedral angles between the dichloro-phenyl and 2,3-dihydro-1H-pyrazol-4-yl rings are 54.8?(2), 76.2?(2) and 77.5?(2)° in mol-ecules A, B and C, respectively, while the 2,3-dihydro-1H-pyrazol-4-yl and phenyl rings make dihedral angles of 45.3?(2), 51.2?(2) and 42.8?(2)°, respectively. In the crystal, two of the mol-ecules are linked through N-H?O hydrogen bonding to an adjoining mol-ecule, forming dimers of the R2(2)(10) type, while the third mol-ecule forms such dimers with itself. C-H?O inter-actions link the dimers.

| S-EPMC3588482 | biostudies-literature

N-(1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)-2-[4-(methyl-sulfan-yl)phen-yl]acetamide.

Project description:In the title compound, C(20)H(21)N(3)O(2)S, the 2,3-dihydro-1H-pyrazole ring is nearly planar (r.m.s. deviation = 0.023 Å) and forms dihedral angles of 16.96 (6) and 38.93 (6)° with the benzene and phenyl rings, respectively. The dihedral angle between the benzene and phenyl rings is 55.54 (6)°. The mol-ecular conformation is consolidated by an intra-molecular C-H⋯O hydrogen bond, which forms an S(6) ring. In the crystal, inversion dimers linked by pairs of N-H⋯O(p) (p = pyrazole) hydrogen bonds generate R(2) (2)(10) loops. The dimers are linked by C-H⋯O hydrogen bonds into sheets lying parallel to (100).

| S-EPMC3435699 | biostudies-literature

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