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Published on: October 24, 2017
N,N'-(Propane-1,3-di-yl)dibenzo-thio-amide.
Masayuki Nagasawa1, Yuji Sasanuma1, Hyuma Masu2
1Department of Applied Chemistry and Biotechnology, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan.
This study details the crystal structure of a C17H18N2S2 compound, revealing a specific trans-trans-trans-gauche(+) conformation. Molecular interactions, including hydrogen bonds, create a unique herringbone arrangement in the crystal lattice.
Area of Science:
- Crystallography
- Organic Chemistry
- Materials Science
Background:
- Understanding molecular conformation is crucial for predicting material properties.
- Hydrogen bonding plays a significant role in crystal packing and supramolecular assembly.
- Thioamide groups are versatile functional groups in organic synthesis and medicinal chemistry.
Purpose of the Study:
- To elucidate the three-dimensional structure of the title compound (C17H18N2S2).
- To investigate the intermolecular interactions governing crystal packing.
- To analyze the conformational preferences of the molecule in the solid state.
Main Methods:
- Single-crystal X-ray diffraction was employed to determine the crystal structure.
- Analysis of bond lengths, bond angles, and dihedral angles.
- Identification and analysis of hydrogen bonding networks (N-H⋯S=C and C-H⋯S=C).
Main Results:
- The compound adopts a trans-trans-trans-gauche(+) (tttg (+)) conformation around the NH-CH2-CH2-CH2-NH backbone.
- A distinctive herringbone arrangement of molecules was observed along the c-axis.
- Dihedral angles between thioamide groups and phenyl rings were quantified (43.0(2)° and 33.1(2)°).
Conclusions:
- The study provides detailed structural insights into the C17H18N2S2 compound.
- The observed crystal packing is influenced by specific hydrogen bonding interactions.
- The conformational analysis contributes to the understanding of structure-property relationships in related organic molecules.
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