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What is the structure of the thiosulfate ion?

April 26, 2017Ion structure thiosulfate

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What is the structure of the thiosulfate ion?

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Structure of the thiosulfate ion. Yellow = sulfur, Red = oxygen. Click the image for a 3D Chime model. Structurally, thiosulfate is similar to sulfate. The molecule has a slightly distorted tetrahedral shape with a central and a peripheral sulfur (S-SO3). Sulfur is larger than oxygen and forms weaker bonds, so the S-S bond is somewhat longer than the S-O bonds (1.99 +/- 0.03 A vs. 1.48 +/- 0.06 A, respectively) [Nardelli].