Related Experiment Video
Updated: Jun 5, 2026
Facile Preparation of (2Z,4E)-Dienamides by the Olefination of Electron-deficient Alkenes with Allyl Acetate
Published on: June 21, 2017
2-[(E)-2-(4-Ethoxy-phen-yl)ethen-yl]-1-methyl-pyridinium iodide monohydrate
Abstract:
In the title compound, C(16)H(18)NO(+)·I(-)·H(2)O, the cation is essentially planar, with a dihedral angle of 3.13 (16)° between the pyridinium and benzene rings. The mol-ecule adopts an E configuration with respect to the alkene double bond. In the crystal structure, the cations are packed in an anti--parallel manner through π-π inter-actions between adjacent pyridinium and benzene rings along the a axis, with centroid-to-centroid distances of 3.615 (2) and 3.630 (2) Å. Water mol-ecules bind the iodide ions through O-H⋯I hydrogen bonds into layers. These layers link with the cations through weak C-H⋯O and C-H⋯I inter-actions.
Related Concept Videos
02:28Structure and Nomenclature of Ethers
Ethers are organic compounds with an ether functional group which is characterized by an oxygen atom connected to two — identical or different — alkyl, aryl, or vinyl groups. The C–O–C linkage in dimethyl ether — the simplest ether — has an approximately tetrahedral bond angle of 110.3 degrees. The oxygen atom is sp3- hybridized, with the C–O distance being about 140 pm.
Classification of Ethers
Based on their attached substituent groups, ethers can be classified into two...
02:45E2 Reaction: Kinetics and Mechanism
02:27Predicting Molecular Geometry
02:36Crown Ethers