(Dimethyl-phosphor-yl)methanaminium chloride.

Area of Science:

• Crystal structure analysis
• Supramolecular chemistry
• Inorganic chemistry

Background:

• Understanding the self-assembly of ionic compounds is crucial in materials science.
• Hydrogen bonding plays a significant role in dictating crystal packing and properties.
• The specific salt, C(3)H(11)NOP(+)·Cl(-), has not been previously characterized structurally.

Purpose of the Study:

• To elucidate the detailed crystal structure of the title phosphonium chloride salt.
• To identify the intermolecular interactions governing the crystal packing.
• To characterize the hydrogen bonding network and the role of counter-anions.

Main Methods:

• Single-crystal X-ray diffraction was employed to determine the crystal structure.
• Analysis of hydrogen bonding was performed using graph-set descriptors.
• Structural visualization and analysis of packing motifs were conducted.

Main Results:

• The crystal structure is characterized by centrosymmetric dimers of the phosphonium cation.
• These dimers are formed via two strong, charge-supported N-H⋯O hydrogen bonds (R(2)(2)(10)).
• Chloride counter-anions link the cationic dimers into one-dimensional chains along the a-axis.

Conclusions:

• The crystal packing is dominated by robust hydrogen bonding between cations.
• The chloride ions act as crucial linkers, extending the structure into chains.
• This study provides fundamental insights into the supramolecular assembly of this phosphonium salt.