Crystal structure of penta-carbon-yl(2,2-di-fluoro-propane-thio-ato-κ S)manganese(I)

Abstract

The title compound, [Mn{SC(O)CF₂CH₃}(CO)₅], has been isolated as a by-product during the reaction of K[Mn(CO)₅] with CH₃CF₂COCl. It is built up from a di-fluoro-methyl-propane-thio-ate bonded to an Mn(CO)₅ moiety through the S atom. The Mn atom has an almost perfect octa-hedral coordination sphere. It is one of the rare examples of compounds containing the (CO)₅MnS-C fragment. In the crystal, the methyl group occupies a pocket surrounded by the O atoms of three carbonyl groups of the Mn(CO)₅ moiety; however, the H⋯O distances are rather long. These inter-actions lead to the formation of layers lying parallel to (101), which enclose R ₄ ⁴(15) and R ₄ ⁴(16) ring motifs. The CF₂ group is disordered over two sets of sites with occupancies of 0.849 (3) and 0.151 (3).

Keywords: Mn(CO)5 derivatives; Mn-S bond; crystal structure; inter­molecular contacts.