Formation of Hexacarbonylmanganese(I) Salts, [Mn(CO)6]+X-, in Anhydrous HF

Geier, Jens; Willner, Helge; Lehmann, Christian W.; Aubke, Friedhelm

doi:10.1021/ic700798z

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Formation of Hexacarbonylmanganese(I) Salts, [Mn(CO)₆]⁺X^-, in Anhydrous HF

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Lehmann, Christian W.
Service Department Lehmann (EMR), Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Citation

Geier, J., Willner, H., Lehmann, C. W., & Aubke, F. (2007). Formation of Hexacarbonylmanganese(I) Salts, [Mn(CO)₆]⁺X^-, in Anhydrous HF. Inorganic Chemistry, 46(17), 7210-7214. doi:10.1021/ic700798z.

Cite as: https://hdl.handle.net/11858/00-001M-0000-000F-9149-C

Abstract

A convenient one-step synthesis for [Mn(CO)₆]⁺ salts has been developed. The method involves the one-electron oxidation of Mn₂(CO)₁₀ by protons in solutions of Lewis acids (BF₃, (CF₃)₃BCO) and anhydrous HF. The molecular structure of [Mn(CO)₆][BF₄]·SO₂ was determined by single-crystal X-ray diffraction. Crystal data: orthorhombic, space group Cmc2₁; a=8.7001(2)Å, b=11.8497(3)Å, and c=11.7437(3)Å; Z=4; R1=0.0320 and wR2=0.1106. The structural, NMR, and vibrational spectroscopic properties of [Mn(CO)₆]⁺ fit perfectly with those of the isoelectronic species [V(CO)₆]^-, Cr(CO)₆, and [Fe(CO)₆]²⁺.