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That is, in terms of stability in aqueous solution and the energy released by the hydrolysis of the S-O-S bond compared with pyrophosphate hydrolysis. More specifically, could sulfates substitute phosphates in some kind of hypothetical biochemistry? AFAIK sulfates are generally not found in terrestrial biochemistry.

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  • $\begingroup$ Biochemical systems can form sulfate and some organisms can even reduce sulfate as anaerobic oxygen sources. But sulfate oligimers do not last long in water due to their Lewis acidity. $\endgroup$ – Oscar Lanzi Jan 19 at 17:51
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    $\begingroup$ Pyrosulfates hydrolyse quickly. pubs.acs.org/doi/abs/10.1021/ic50004a019 $\endgroup$ – Mithoron Jan 19 at 18:07

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