Cyclic polythiaether complexes: preparation and crystal structure of tricarbonyl(1,4,7-trithiacyclononane)molybdenum(0)
β Scribed by Ashby, Michael T.; Lichtenberger, Dennis L.
- Book ID
- 126130344
- Publisher
- American Chemical Society
- Year
- 1985
- Tongue
- English
- Weight
- 408 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0020-1669
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## Abstract 1,4,7βTrithiacyclononane ([__9__]aneS~3~) reacts with molecular diiodine in CH~2~Cl~2~ to form a 1:1 adduct. The formation constant and the thermodynamic parameters of this adduct have been determined by UVβvisible spectra of several solutions at the temperatures of 15, 20, 25, 30, and
downfield. Thus on complex formation of (/), additional shielding and deshielding effects occur which can be explained in terms of a diamagnetic ring current in complex (2). We therefore propose the homoaromatic structure (2a) for the complex. Further support for this assignment comes from the fact