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Melaminium glutarate monohydrate
Jan Janczak1, Genivaldo Julio Perpétuo
1Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, CEP 31270-901, Belo Horizonte, MG, Brazil. jjanek@dedalus.lcc.ufmg.br
Summary
This study details the crystal structure of a new melaminium glutarate monohydrate salt. It reveals interconnected chains and sheets formed by hydrogen bonds, creating a stable 2D polymer structure.
Area of Science:
- Crystallography
- Materials Science
- Supramolecular Chemistry
Background:
- Melaminium salts are of interest due to their diverse structural and chemical properties.
- Understanding the hydrogen bonding networks in organic salts is crucial for designing new materials.
Purpose of the Study:
- To determine the crystal structure of 2,4,6-triamino-1,3,5-triazin-1-ium glutarate monohydrate.
- To elucidate the hydrogen bonding interactions and supramolecular assembly in this new melaminium salt.
Main Methods:
- Single-crystal X-ray diffraction was employed to analyze the crystal structure.
- Analysis of hydrogen bonding patterns (N-H...N, O-H...O) was performed.
Main Results:
- The crystal structure consists of singly protonated melaminium cations, mono-dissociated glutarate anions, and water molecules.
- Melaminium residues form chains via N-H...N hydrogen bonds, which stack into a larger structure.
- Glutarate anions form zigzag polymers through hydrogen bonding.
- Oppositely charged melaminium and glutarate chains assemble into 2D polymeric sheets.
- Water molecules mediate O-H...O hydrogen bonds between sheets, stabilizing the overall structure.
Conclusions:
- The crystal structure of melaminium glutarate monohydrate exhibits a complex 2D polymeric framework stabilized by extensive hydrogen bonding.
- The study provides insights into the supramolecular organization of organic salts, relevant for crystal engineering.