Bis(2,3-dimethyl-anilinium) dihydrogen-diphosphate

Area of Science:

• Crystal chemistry
• Solid-state chemistry
• Inorganic chemistry

Background:

• Dihydrogendiphosphate anions are important in various chemical and biological systems.
• Understanding the structural properties of organic-inorganic salts can provide insights into material properties.

Purpose of the Study:

• To characterize the crystal structure of 2,3-xylidinium dihydrogendiphosphate.
• To elucidate the intermolecular interactions governing crystal cohesion and stability.

Main Methods:

• Single-crystal X-ray diffraction was used to determine the crystal structure.
• Analysis of bond lengths, bond angles, and hydrogen bonding patterns.

Main Results:

• The crystal structure of 2,3-xylidinium dihydrogendiphosphate (2C(8)H(12)N(+)·H(2)P(2)O(7) (2-)) was determined.
• The dihydrogendiphosphate anion exhibits crystallographic twofold symmetry with a P-O-P angle of 135.50(9)°.
• 2,3-xylidinium cations are arranged between ribbons of dihydrogendiphosphate entities, forming a 3D network stabilized by electrostatic interactions and hydrogen bonds (N-H⋯O and O-H⋯O).

Conclusions:

• The crystal structure reveals a stable 3D network formed by the interplay of organic cations and inorganic anions.
• The identified hydrogen bonding and electrostatic interactions are crucial for the overall crystal cohesion and stability.