Dinitro-sylbis[tris-(4-methyl-phen-yl)phosphane]iron

Area of Science:

• Inorganic Chemistry
• Coordination Chemistry
• Organometallic Chemistry

Background:

• Dinitrosyl iron compounds (DNICs) are a class of metal dinitrosyls with the general formula Fe(NO)2(L)x.
• These compounds have garnered interest due to their unique electronic properties and potential applications.

Purpose of the Study:

• To elucidate the crystal structure of a novel dinitrosyl iron diphosphane complex.
• To characterize the coordination environment around the iron center in the synthesized complex.

Main Methods:

• Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
• The complex was synthesized with the diphosphane ligand L = P(C6H4-p-CH3)3.

Main Results:

• The structure of [Fe(NO)2(P(C6H4-p-CH3)3)2] was determined, revealing two crystallographically independent molecules per asymmetric unit.
• The iron atom is tetrahedrally coordinated by two phosphane ligands and two nitrosyl (NO) groups.
• Fe-N-O bond angles were found to be in the range of 173.84(15)-179.31(16)°, indicating near-linear nitrosyl coordination.

Conclusions:

• The study provides a detailed structural characterization of a dinitrosyl iron diphosphane complex.
• The tetrahedral coordination geometry and near-linear NO groups are consistent with known DNICs, offering insights into their bonding and stability.