5H-Imidazo[4,5-f][1,10]phenanthroline
Summary
This study details the crystal structure of a C(13)H(8)N(4) molecule, revealing its planar geometry. The molecule forms intermolecular connections via hydrogen bonding and multiple pi-pi stacking interactions between aromatic rings.
Area of Science:
- Crystallography
- Supramolecular Chemistry
- Organic Chemistry
Background:
- Understanding molecular packing and intermolecular forces is crucial for predicting material properties.
- Planar organic molecules with nitrogen heterocycles often exhibit unique electronic and structural characteristics.
- Pi-pi stacking interactions play a significant role in the self-assembly of organic crystals.
Purpose of the Study:
- To elucidate the crystal structure of the title molecule C(13)H(8)N(4).
- To investigate the intermolecular interactions governing the molecule's arrangement in the solid state.
- To characterize the planarity and stacking motifs within the crystal lattice.
Main Methods:
- Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
- Analysis of the crystal structure involved identifying hydrogen bonds and pi-pi stacking interactions.
- Geometric parameters, including root-mean-square deviation and centroid-centroid distances, were calculated.
Main Results:
- The C(13)H(8)N(4) molecule exhibits a nearly planar conformation with a low r.m.s. deviation of 0.025(3) Å for non-hydrogen atoms.
- Intermolecular connections were established through one bifurcated N-H⋯(N,N) hydrogen bond.
- Three distinct pi-pi stacking interactions were observed: between pyridine-imidazole rings (3.631(8) Å) and two between pyridine-benzene rings (3.675(5) Å and 3.666(2) Å).
Conclusions:
- The crystal structure of C(13)H(8)N(4) is stabilized by a combination of hydrogen bonding and significant pi-pi stacking interactions.
- The observed planarity and stacking arrangements suggest potential for applications in materials science where molecular organization is key.
- Detailed crystallographic analysis provides fundamental insights into the supramolecular assembly of this nitrogen-rich organic molecule.
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