What question did this study set out to answer?

This research aims to investigate the hydride donation abilities of protonated bisphosphines for CO2 reduction.

February 12, 2026Chemical Communications2 citationsOpen Access

Protonated Bisphosphines: A New Class of Powerful Hydride Donors Capable of CO2 Reduction

DBDanijela BarićRudjer Boskovic Institute MDMario DamjanovićUniversity of Zagreb ZGZoran GlasovacRudjer Boskovic Institute

Key Points

This research aims to investigate the hydride donation abilities of protonated bisphosphines for CO2 reduction.
Conducted DFT calculations to analyze hydride donation capabilities.
Evaluated electron-donating strengths of substituents on phosphines.
Investigated performance of monoprotonated bisphosphines compared to traditional hydride donors.
Protonated phosphines show moderate hydride donation capacities.
Monoprotonated bisphosphines display significantly enhanced hydricity.
Some bisphosphines exceed performance of established Super-Hydride in hydride donation.

Abstract

Using DFT calculations, we show that protonated phosphines bearing strong electron‑donating substituents are moderate hydride donors. Unexpectedly, proton-sponge-like monoprotonated bisphosphines exhibit greatly enhanced hydricity, with some surpassing that of Super‑Hydride....

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