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Updated: May 31, 2026

Modification and Functionalization of the Guanidine Group by Tailor-made Precursors
Published on: April 27, 2017
1,3-Di-n-butyl-thio-urea
Andrzej Okuniewski1, Agnieszka Dąbrowska, Jaroslaw Chojnacki
1Department of Inorganic Chemistry, Gdansk University of Technology, 11/12 Narutowicza Str., 80-233 Gdańsk, Poland.
This study reveals the crystal structure of a sulfur-containing compound, detailing how hydrogen bonds create layered structures with distinct hydrophilic and hydrophobic regions, forming a 3D molecular architecture.
Area of Science:
- Crystallography
- Supramolecular Chemistry
- Organic Chemistry
Background:
- Understanding molecular interactions is key in materials science.
- Hydrogen bonding plays a crucial role in crystal engineering.
- The arrangement of functional groups dictates supramolecular assembly.
Purpose of the Study:
- To elucidate the crystal structure of the title compound C(9)H(20)N(2)S.
- To analyze the intermolecular interactions, specifically hydrogen bonding, within the crystal lattice.
- To describe the resulting supramolecular architecture and its properties.
Main Methods:
- Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
- Analysis of hydrogen bonding networks (N-H⋯S=C) was performed.
- The spatial arrangement of n-butyl groups and their influence on the crystal packing were examined.
Main Results:
- The crystal structure of C(9)H(20)N(2)S was determined, showing n-butyl groups in syn and anti conformations relative to the C=S bond.
- Two molecules form a centrosymmetric dimer via N-H⋯S=C hydrogen bonds.
- Dimers are further linked by N-H⋯S=C hydrogen bonds into layers with hydrophilic interiors and hydrophobic exteriors, forming a 3D structure through butyl group interdigitation.
Conclusions:
- The study successfully characterized the crystal structure and supramolecular assembly of C(9)H(20)N(2)S.
- The hydrogen bonding pattern dictates the formation of layered structures with segregated hydrophilic and hydrophobic regions.
- The interpenetration of butyl groups stabilizes the overall three-dimensional crystal architecture.
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