An X-ray structure analysisL31 of the manganese complex has now shown the isolated molecule to contain two octahedral units joined by a shared edge (cf. Fig. 1).The central moiety containing the Mn, N, and S atoms is almost planar, while the MnzNz four-membered ring is exactly planar, showing that the nitrogen atoms no longer possess a stereochemically effective lone pair. All the Mn-N distances are equal within the limits of error and somewhat longer than would correspond to a single bond (based on the covalent radius of 1.398, for MnoL4]). Both the Mn...Mn' distance of 3.318(2)8, and the angle in the central portion of the molecule show that no direct metal-metal bond is present; the small N-Mn-N' angle (76") even suggests a repulsive interaction between the two Mn atoms.The NSOFZ group serving as bridge has a strongly distorted tetrahedral symmetry. The S-0 and S-F bond lengths closely resemble those in other compounds R-NSOF, [']. The very short N-S bond of 1.434 (6) 8, corresponds to a bond order of ca. 2.S6] and indicates strong d,-p, bonds between sulfur and nitrogen; it is ca. 0.05 8, shorter than in CINSOFz[sal
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