Trithiane metal complexes

Trithiane, S3(CH2)3 a chair-shaped molecule like cyclohexane, forms many metal complexes. Two silver compounds have layer structures based on the 6-gon net. In both structures Ag is tetrahedrally coordinated, the fourth ligand (X in Fig. 3.23(a)) being H2O in Ag(trithiane)C104. H2O and 0 of NOJ in Ag(tri-thiane)N03. H2O (JCS A 1968 93). Silver tricyanmethanide, Ag[C(CN)3], has a... 

Bond angles C-S-C close to 100° are found in cyclic molecules based on strain-free 6-rings. All those studied have the chair conformation examples include l,4-dithiane/ 1,3,5-trithiane, and hexathia-adamantane. The last compound, S6(CH)4, is structurally similar to (CH2)eN4 and (CH2)6(CH)4. Trithiane forms many metal complexes the structure of S3(CH2)3. AgC104. H2O is mentioned in Chapter 3 (p. 90). 

As typical examples of complexes with bidentate RS(CH2) SR and tridentate [RS(CH2) ]2S we may quote here a series of mononuclear Ru compounds which have been prepared and characterized by Chatt et aV Another example of a tridentate ligand is trithiane, which forms complexes with Ag1 and Hg11.9,10 More complexes are given in a review concerned with chelating dithioether complexes of d% metal ions.11. 

Trithiane readily forms complexes to both soft and hard metal ions and borderline cases. For complexes where X-ray structural information is available, it appears that utilization of S-donor sites in normal tridentate chelation is never attained often the ligand is involved in the form of a bridging mode linking two or more separate metal centers. In addition, the 1,3,5-trithiane ring retains the chair conformer which it possesses in the free state. 

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