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Acidity and Basicity of Alcohols and Phenols

Acidity and Basicity of Alcohols and Phenols

Like water, alcohols are weak acids and bases. This is attributed to the polarization of the O–H bond making the hydrogen partially positive. Moreover, the electron pairs on the oxygen atom of alcohol make it both basic and nucleophilic. Protonation of an alcohol converts hydroxide, a poor leaving group, into water—a good one. The two acid–base equilibria corresponding to ethanol are depicted below.

Structure and Nomenclature of Alcohols and Phenols

Structure and Nomenclature of Alcohols and Phenols

Overview
Alcohols are one of the most important functional groups in organic chemistry. The name of alcohol comes from the hydrocarbon from which it is derived. Alcohols are organic molecules containing the functional hydroxyl or –OH group directly bonded to carbon. Phenols have an OH group directly attached to a benzene ring. While alcohols are colorless, phenol is a white crystalline compound with a characteristic "hospital smell" odor.
As with other organic compounds, alcohols and phenols...

Physical Properties of Alcohols and Phenols

Physical Properties of Alcohols and Phenols

Alcohols are organic compounds in which a hydroxy group is attached to a saturated carbon. Phenols are a class of alcohols containing a hydroxy group attached to an aromatic ring. The physical properties of the alcohols and phenols are influenced by hydrogen bonding due to the oxygen–hydrogen dipole in the hydroxy functional group and dispersion forces between alkyl or aryl regions of alcohol and phenol molecules.
Alcohols possess a higher boiling point than aliphatic hydrocarbons of similar...

Experimental Determination of Chemical Formula

Experimental Determination of Chemical Formula

The elemental makeup of a compound defines its chemical identity, and chemical formulas are the most concise way of representing this elemental makeup. When a compound’s formula is unknown, measuring the mass of its constituent elements is often the first step in determining the formula experimentally.

Nomenclature of Alkynes

Nomenclature of Alkynes

Alkynes are unsaturated hydrocarbons characterized by the presence of carbon-carbon triple bonds and have a general formula CnH2n-2. The nomenclature of alkynes follows a set of rules similar to alkanes and alkenes; however, alkynes bear the suffix "-yne" instead of "-ane" or "-ene." There are two approaches to naming alkynes:

Nomenclature of Carboxylic Acid Derivatives: Amides and Nitriles

Nomenclature of Carboxylic Acid Derivatives: Amides and Nitriles

Naming Amides
The IUPAC and common names of amides are derived from the parent carboxylic acid, by replacing the suffix “oic acid” and “ic acid,” respectively, with “amide.” In the following example, the IUPAC name ethanamide is derived from ethanoic acid, and the common name, acetamide, is obtained from acetic acid.

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6-(4-Nitro-phen-oxy)hexa-nol.

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Summary

This summary is machine-generated.

This study details the crystal structure of a C(12)H(17)NO(4) compound, revealing an almost planar molecule. Molecular packing is stabilized by specific hydrogen bonds within the crystal lattice.

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Area of Science:

Crystallography
Molecular structure determination
Organic chemistry

Background:

Understanding molecular conformation and crystal packing is crucial in materials science and drug design.
Detailed structural analysis provides insights into intermolecular interactions.

Purpose of the Study:

To elucidate the three-dimensional molecular structure and crystal packing of the title compound C(12)H(17)NO(4).
To investigate the conformational preferences and intermolecular forces governing the solid-state arrangement.

Main Methods:

Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
Analysis of bond lengths, bond angles, and deviations from planarity provided structural insights.
Identification of hydrogen bonding networks through crystallographic data.

Main Results:

The title compound C(12)H(17)NO(4) exhibits an almost planar molecular geometry, with a root-mean-square deviation of 0.070 Å for non-hydrogen atoms.
All methylene C-C bonds were observed to adopt an anti-periplanar conformation.
In the crystalline state, molecules are arranged in planes parallel to the (12) crystallographic plane, with packing stabilized by intermolecular O-H⋯O hydrogen bonds.

Conclusions:

The study successfully characterized the molecular and crystal structure of C(12)H(17)NO(4).
The observed planarity and specific conformation highlight key structural features.
Intermolecular hydrogen bonding plays a significant role in stabilizing the crystal lattice.