How to pronounce“bh3”in English

We show the remaining two H's from BH3 still on the boron, but in reality, those hydrogens can also add to two other alkene molecules.

In episode 18, we showed BH3 for simplicity… but BH3 doesn’t actually exist in that form.

To start the reaction, our nucleophile, 1-methylpent-1-ene, attacks the boron-containing reagent, which we will represent here as BH3.

On the flip side, Lewis acids are positively charged atoms, like a proton, or molecules that are short a pair of electrons from an octet and have an empty p orbital, like borane, BH3.