Zur Darstellung von ν‐C 5 H 5 Mn(CO) 2 SOF 2 und [ν‐C 5 H 5 Mn(CO) 2 ] 2 SO

A sulfur monoxide complex of platinum fluoride with a positively charged ligand

A sulfur monoxide complex of platinum fluoride in the form of PtF₂(η¹-SO) was generated via the isomerization of a molecular complex Pt(SOF₂) in cryogenic matrixes under UV-vis irradiation. The infrared absorptions observed at 1205.4, 619.8 and 594.9 cm^-1 are assigned to the S-O, antisymmetric and symmetric F-Pt-F stretching vibrations of the PtF₂(η¹-SO) complex, which possesses nonplanar C_s symmetry with a singlet ground state according to density functional theory calculations. The experimental vibrational frequency and computed distance (1.449 Å) of the SO ligand indicate that the SO ligand features a positively charged character, which is further confirmed by natural bond orbital analysis and Mayer bond order. Such character is completely different from that for early transition metal-SO complexes and dioxygen complexes of platinum. Formation of the PtF₂(η¹-SO) complex was found to occur via the consecutive transfer of the two fluorine atoms from SOF₂ to Pt in the sulfur bound Pt(SOF₂) complex, which involves a series of intermediates on the basis of the mechanism study at the B3LYP level. Although the whole process is hindered by the large energy barrier encountered during the transfer of the first fluorine atom, UV-vis irradiation can provide sufficient energy to surmount this barrier and facilitates the formation of the nonplanar PtF₂(η¹-SO) complex stabilized in matrix.

Hydrosulfide complexes of the transition elements: diverse roles in bioinorganic, cluster, coordination, and organometallic chemistry

Molecules containing transition metal hydrosulfide linkages are diverse, spanning a variety of elements, coordination environments, and redox states, and carrying out multiple roles across several fields of chemistry.

Isolation and Characterization of a Non-Rigid Hexamethylbenzene-SO2+ Complex

During our studies towards the preparation of the pentagonal-pyramidal hexamethylbenzene dication C₆ (CH₃ )₆²⁺ , we isolated the unprecedented dicationic species C₆ (CH₃ )₆ SO²⁺  (AsF₆^- )₂ from the reaction of hexamethylbenzene with a mixture of anhydrous HF, AsF₅ , and liquid SO₂ . This compound can be understood as a complex of unknown SO²⁺ with hexamethylbenzene. Herein, we report on its synthesis, molecular structure, and spectroscopic characterization.