Related Experiment Videos
Polymeric methylenebis(diphenylphosphine oxide) hydrogen triiodide
Ahmed A Boraei1, Wolf W du Mont, Frank Ruthe
1Chemistry Department, Faculty of Science, Minia University, 61519 El-Minia, Egypt.
Summary
The study reveals that hydrogen bonds dictate the structure of a novel compound, forming polymeric chains of cations cross-linked by interactions with triiodide anions. This detailed analysis enhances understanding of supramolecular chemistry and crystal engineering.
Area of Science:
- Crystal Engineering
- Supramolecular Chemistry
- Inorganic Chemistry
Background:
- The compound [[(C(6)H(5))(2)POH(0.5)](2)CH(2)]I(3), also known as dppmO(2)H(+) x I(3)(-), involves diphenylphosphinomethane (dppm).
- Understanding the conformational behavior of such cationic species is crucial in supramolecular chemistry.
Purpose of the Study:
- To elucidate the crystal structure and intermolecular interactions of the title compound.
- To investigate the role of hydrogen bonding in the self-assembly of polymeric cations.
Main Methods:
- Single-crystal X-ray diffraction analysis was employed to determine the three-dimensional structure.
- Analysis of hydrogen bonding networks, including P-O...H...O-P and C-H...I interactions.
Main Results:
- The cationic part, monoprotonated diphenylphosphinoyl methane (dppmO(2)), forms chain-like polymeric cations, (dppmO(2)H(+))(x), through symmetric P[double bond]O...H...O[bond]P bridging hydrogen bonds.
- These polymer chains are further interconnected by non-classical C[bond]H...I contacts between methylene-group hydrogen atoms and triiodide anions.
- The triiodide anions exhibit crystallographic inversion symmetry.
Conclusions:
- The crystal structure is governed by a combination of strong hydrogen bonds and weaker C-H...I interactions.
- This study demonstrates a unique supramolecular architecture driven by hydrogen bonding in organophosphorus compounds.