1-Acetyl-3-ferrocenyl-5-(2-nitro-phen-yl)-2-pyrazoline

Area of Science:

• Organometallic Chemistry
• Crystallography
• Supramolecular Chemistry

Background:

• Understanding the structural and bonding characteristics of organometallic compounds is crucial for developing new materials and catalysts.
• The specific arrangement of ligands around a metal center dictates the compound's reactivity and physical properties.

Purpose of the Study:

• To elucidate the three-dimensional crystal structure of the title compound, [Fe(C(5)H(5))(C(16)H(14)N(3)O(3))].
• To analyze the molecular geometry, including dihedral angles between key ring systems.
• To identify and characterize intermolecular and intramolecular hydrogen bonding interactions within the crystal lattice.

Main Methods:

• Single-crystal X-ray diffraction was employed to determine the precise atomic arrangement.
• Analysis of bond lengths, bond angles, and dihedral angles provided insights into the molecular geometry.
• Intermolecular and intramolecular interactions were identified through hydrogen bond analysis.

Main Results:

• The pyrazoline and substituted cyclopentadienyl rings exhibit near coplanarity (dihedral angle of 8.17(2)°).
• The nitro-substituted benzene ring is significantly twisted relative to the pyrazoline ring (dihedral angle of 70.76(1)°).
• Three intermolecular C-H⋯O hydrogen bonds and one intramolecular C-H⋯N hydrogen bond were identified, stabilizing the crystal structure. Methyl group hydrogen atoms show positional disorder.

Conclusions:

• The crystal structure of [Fe(C(5)H(5))(C(16)H(14)N(3)O(3))] reveals specific conformational preferences and intermolecular interactions.
• The identified hydrogen bonding network plays a significant role in the crystal packing and stability.
• The detailed structural information provides a foundation for further investigations into the compound's properties and potential applications.