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Related Concept Videos

2° Amines to N-Nitrosamines: Reaction with NaNO201:20

2° Amines to N-Nitrosamines: Reaction with NaNO2

Secondary amines react with nitrous acid to form N-nitrosamines, as depicted in Figure 1. Nitrous acid, a weak and unstable acid, is formed in situ from an aqueous solution of sodium nitrite and strong acids, such as hydrochloric acid or sulfuric acid, in cold conditions. In the presence of an acid, the nitrous acid gets protonated. The subsequent loss of water results in the formation of the electrophile known as nitrosonium ion.
Role of Reduced Coenzymes NADH and FADH₂01:29

Role of Reduced Coenzymes NADH and FADH₂

The energy released from the breakdown of the chemical bonds within nutrients can be stored either through the reduction of electron carriers or in the bonds of adenosine triphosphate (ATP). In living systems, a small class of compounds functions as mobile electron carriers, molecules that bind to and shuttle high-energy electrons between compounds in pathways. The principal electron carriers that will be considered originate from the B vitamin group and are derivatives of nucleotides; they are...
Nomenclature of Carboxylic Acid Derivatives: Amides and Nitriles01:11

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.
Drug Nomenclature01:17

Drug Nomenclature

During the development of a new pharmaceutical, the manufacturer initially assigns a code name to the drug. Once approved, the drug receives a United States Adopted Name (USAN)—a generic, nonproprietary designation. Upon being listed in the United States Pharmacopeia, this nonproprietary name becomes the drug's official name. Additionally, the manufacturer assigns a proprietary name or trademark, which serves as the brand name under which the drug is marketed. It is worth noting that the same...

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Related Experiment Video

Updated: May 20, 2026

A General Method for Detecting Nitrosamide Formation in the In Vitro Metabolism of Nitrosamines by Cytochrome P450s
07:38

A General Method for Detecting Nitrosamide Formation in the In Vitro Metabolism of Nitrosamines by Cytochrome P450s

Published on: September 25, 2017

6-Nicotinamido-2-naphthoic acid.

Yun-Sung Song1, Soon W Lee

  • 1Department of Chemistry (BK21), Sungkyunkwan University, Natural Science Campus, Suwon 440-746, Republic of Korea.

Acta Crystallographica. Section E, Structure Reports Online
|July 19, 2012
PubMed
Summary

This study details the molecular structure of C(17)H(12)N(2)O(3), revealing near-planar rings and a crystal network formed by hydrogen bonds. The findings offer insights into molecular assembly and crystal engineering.

Area of Science:

  • Crystallography
  • Molecular Chemistry

Background:

  • Understanding the solid-state structure of organic molecules is crucial for materials science.
  • Hydrogen bonding plays a key role in molecular self-assembly and crystal packing.

Purpose of the Study:

  • To elucidate the crystal structure of the title molecule, C(17)H(12)N(2)O(3).
  • To analyze the intermolecular interactions, specifically hydrogen bonding, within the crystal lattice.

Main Methods:

  • Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
  • Analysis of bond lengths, bond angles, and dihedral angles provided structural details.

Main Results:

  • The naphthalene and pyridin-3-yl ring systems exhibit near-planarity with a small dihedral angle of 2.28(8)°.

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  • The crystal structure is characterized by a two-dimensional network formed through hydrogen bonds involving hydroxyl and amide groups.

    • Conclusions:

    • The molecule C(17)H(12)N(2)O(3) adopts a specific conformation in the solid state.
    • Hydrogen bonding dictates the formation of a layered structure, influencing the material's properties.