Diethyl 2-(triphenyl-meth-yl)malonate.

Area of Science:

• Organic Chemistry
• Crystallography

Background:

• Understanding the impact of steric hindrance on chemical bonds is crucial in organic chemistry.
• Crystal structure analysis provides detailed information about molecular geometry and packing.

Purpose of the Study:

• To investigate the structural consequences of steric crowding in a specific organic compound.
• To characterize the C-C bond length and molecular conformation influenced by bulky substituents.

Main Methods:

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

Main Results:

• A significantly elongated C-C bond (1.585(2) Å) was observed due to steric repulsion between the triphenylmethyl and diethyl malonate moieties.
• One of the ethyl groups exhibited positional disorder, distributed across two sites in a 60:40 ratio.

Conclusions:

• Steric strain can lead to notable distortions in bond lengths within organic molecules.
• The observed disorder highlights the dynamic nature of molecular conformations in the solid state.