2-(4-Methoxyphenyl)-1H-indene
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چکیده
Excluding four H atoms, the molecule of the title compound, C(16)H(14)O, is almost planar, with an r.m.s. deviation of 0.0801 (2) Å. Due to p-π conjugation, the lengths of the two single bonds attached to the O atom are significantly different.
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rac-2-Hydroxy-2-(2-oxocyclopentyl)-1H-indene-1,3(2H)-dione
In the title compound, C(14)H(12)O(4), the indene unit is essentially planar [r.m.s. deviation = 0.0309 (1) Å] and the cyclo-penta-none ring adopts a twist form. In the crystal, mol-ecules are joined via pairs of O-H⋯O hydrogen bonds into centrosymmetric dimers.
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Root oil of Ligusticum grayi (Apiaceae) contains numerous irregular sesquiterpenoids. In addition to the known acyclic sesquilavandulol and a sesquilavandulyl aldehyde, two thapsanes, one epithapsane, and 14 sesquiterpenoids representing eight hitherto unknown carbon skeletons were found. These skeletons are: prethapsane, i.e. 1,1,2,3a,7,7-hexamethyloctahydro-1H-indene; isothapsane, i.e. 1,2,3a...
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In the mol-ecule of the title compound, C(38)H(37)N(3)O(7), the pyrrolidine ring adopts a twist conformation and the six-membered heterocyclic ring has a boat conformation. In the crystal structure, mol-ecules are linked into a three-dimensional framework through inter-molecular C-H⋯O hydrogen bonds. One ethyl group is disordered over two positions with occupancies 0.67 (2)/0.33 (2).
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The title compound, C(18)H(19)N(3)O(3), is a biologically active triazole derivative. The five-membered ring is oriented with respect to the six-membered rings at dihedral angles of 51.59 (4) and 61.37 (4)°. The crystal structure is stabilized by inter-molecular N-H⋯O hydrogen-bond inter-actions between centrosymmetrically related mol-ecules [the dihedral angle between the benzene rings is 47.4...
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2,3,4,7-Tetrahydro-1H -inden-2-ol (1) has been synthesised by Birch reduction of indan-2-ol. A single-crystal X-ray structur analysis of 1 shows the compound to exist as hydrogen-bonded polymers along the c-axis due to the presence of a series of hydrogen bonds between hydroxo functions. The ferrocene ester derivatives, ferrocene carboxylic acid 2,3,4,7-tetrahydro-1H -inden-2-yl este (2) and fe...
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