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2,2'-Diisopropoxy-5,5'-methyl-enedi-benz-alde-hyde.

ABSTRACT: Mol-ecules of the title compound, C(21)H(24)O(4), are located on a twofold rotation axis running through the central methyl-ene C atom. The aldehyde group is coplanar with the benzene ring [C-C-C-O = 175.7 (4) °].

SUBMITTER: Suresh G

PROVIDER: S-EPMC3393997 | biostudies-literature |

REPOSITORIES: biostudies-literature

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2,2'-[Ethane-1,2-diylbis(-oxy)]dibenz-alde-hyde.

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Project description:The title azine mol-ecule, C28H24N2O4, lies about a center of inversion. The dihedral angle between the phenyl ring and the hy-droxy-substituted ring is 70.3?(5)°. The phenolic O-H group forms an intra-molecular hydrogen bond to the azine N atom.

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Project description:In the title compound, C10H5BrO3, a brominated 3-formyl-chromone derivative, the non-H atoms are essentially coplanar (r.m.s. deviation = 0.0420?Å), with the largest deviation from its mean plane [0.109?(2)?Å] being found for the ring-bound carbonyl O atom. In the crystal, mol-ecules are linked through halogen bonds [Br?O = 3.191?(2)?Å, C-Br?O = 167.32?(10)° and C=O?Br = 168.4?(2)°] along [101]. Mol-ecules are assembled into layers parallel to (101) via ?-? stacking inter-actions along the b axis [shortest centroid-centroid distance between the pyran and benzene rings = 3.495?(2)?Å].

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Diammonium 1,1',3,3'-tetra-methyl-2,2',4,4',6,6'-hexa-oxoperhydro-5,5'-bipyrimidine-5,5'-diide monohydrate.

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