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arXiv · 2502.19235

The prebiotic pathway from P-bearing iron meteorites to phosphates by DFT modeling

Stefano Pantaleone·Marta Corno·Albert Rimola·Nadia Balucani·Piero Ugliengo
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Abstract

Among the biogenic macroelements, phosphorus is the one bringing the most fascinating and unsolved mysteries for what concern its prebiotic history. It possibly landed on Earth as a metal phosphide (Schreibersite, (Fe,Ni)3P), throughout the Heavy Meteor Bombardment during the Archean Era. Its subsequent corrosion by water led to P-oxygenated compounds, which is the subject of this kinetic computational study, thus complementing our previous thermodynamic characterization. The reaction was studied at periodic DFT level, simulating the water corrosion reaction on the reactive Fe2NiP Schreibersite (001)2 surface. Results show that the timescale of the reaction at 350 K is of few hours.

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Stefano Pantaleone, Marta Corno, Albert Rimola, Nadia Balucani, Piero Ugliengo. 2025-02-26. The prebiotic pathway from P-bearing iron meteorites to phosphates by DFT modeling. https://doi.org/10.1021/acsearthspacechem.4c00321

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