Tris(2-meth-oxy-ethanaminium) dodeca-molybdophosphate trihydrate

Area of Science:

• Inorganic Chemistry
• Materials Science
• Crystallography

Background:

• Polyoxometalates (POMs) are versatile inorganic clusters with diverse applications.
• Organic-inorganic hybrid materials combine the properties of both organic and inorganic components.
• The α-Keggin anion ([PMo12O40]3-) is a well-known and stable POM structure.

Purpose of the Study:

• To synthesize and characterize a novel polyoxidometalate-based organic-inorganic hybrid compound.
• To elucidate the crystal structure and supramolecular assembly of the title compound.
• To investigate the role of hydrogen bonding in the formation of the 3D network.

Main Methods:

• Single-crystal X-ray diffraction analysis was employed to determine the crystal structure.
• The asymmetric unit composition was identified, including the α-Keggin polyoxido-anion, organic cations, and solvent water molecules.
• Intermolecular interactions, specifically hydrogen bonding (N-H⋯O and O-H⋯O), were analyzed.

Main Results:

• The title compound, (C3H10NO)3[PMo12O40]·3H2O, was successfully synthesized and characterized.
• The crystal structure revealed the presence of one α-Keggin-type [PMo12O40]3- polyoxido-anion, three independent [CH3-O-CH2-CH2-NH3]+ cations, and three water molecules in the asymmetric unit.
• Extensive intermolecular hydrogen bonding interactions were observed, leading to the formation of a three-dimensional supramolecular network.

Conclusions:

• The synthesized compound represents a new example of polyoxidometalate-based organic-inorganic hybrid materials.
• The crystal structure highlights the importance of hydrogen bonding in directing the self-assembly of inorganic and organic components into extended networks.
• This work contributes to the understanding of structure-property relationships in hybrid POM materials.