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Conformations of Butane

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Unlike ethane and propane that have only two major conformations, butane has more than two conformers. The staggered form of butane in which the bulky methyl groups on the two carbons are placed on opposite sides, that is, at a dihedral angle of 180°, is the lowest energy, most stable form — called the anti conformer. This conformation is stabilized due to the absence of steric repulsion between the largely spaced out methyl groups. The other two staggered conformations are degenerate and have...

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Related Experiment Video

Updated: Jun 5, 2026

Efficient Construction of Drug-like Bispirocyclic Scaffolds Via Organocatalytic Cycloadditions of α-Imino γ-Lactones and Alkylidene Pyrazolones

Efficient Construction of Drug-like Bispirocyclic Scaffolds Via Organocatalytic Cycloadditions of α-Imino γ-Lactones and Alkylidene Pyrazolones

Published on: February 7, 2019

2,3-Bis(pyrazin-2-yloxyimino)butane.

Lin Yan Yang¹, Jing Min Shi

¹Department of Chemistry, Shandong Normal University, Jinan 250014, People's Republic of China.

Acta Crystallographica. Section E, Structure Reports Online

|January 5, 2011

Summary

The crystal structure of C(12)H(12)N(6)O(2) was determined. All non-hydrogen atoms were found to be nearly in the same plane, lying on a crystallographic inversion center.

Area of Science:

Crystallography
Molecular Structure
Organic Chemistry

Background:

Understanding molecular geometry is crucial in chemistry.
Crystallographic studies reveal precise atomic arrangements.
The molecule C(12)H(12)N(6)O(2) was synthesized and selected for structural analysis.

Purpose of the Study:

To determine the three-dimensional structure of C(12)H(12)N(6)O(2).
To analyze the planarity and symmetry of the molecule.
To provide crystallographic data for this specific organic compound.

Main Methods:

Single-crystal X-ray diffraction was employed.
The crystal structure was solved and refined.
Analysis of atomic coordinates and bond parameters was performed.

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Main Results:

The molecular formula was confirmed as C(12)H(12)N(6)O(2).
The molecule was found to reside on a crystallographic inversion center.
All non-hydrogen atoms exhibited a nearly planar arrangement.

Conclusions:

The crystal structure of C(12)H(12)N(6)O(2) reveals a highly symmetrical and planar molecular geometry.
The observed planarity is likely influenced by the crystallographic symmetry.
This structural data contributes to the understanding of organic molecules with similar frameworks.