Question

Complete the electron-dot structure of thiamine pyrophosphate, showing all lone-pair electrons. Include all valence lone pairs in your answer.

a) Structural formula
b) Molecular formula
c) Lewis structure
d) Ball-and-stick model

Answer 1

The electron-dot structure of thiamine pyrophosphate can be determined by identifying its electron-pair geometry and molecular structure. It has a trigonal bipyramidal electron-pair geometry and a seesaw molecular structure, with the lone pair of electrons occupying one of the equatorial positions.

Step-by-step explanation:

The electron-dot structure of thiamine pyrophosphate is determined by identifying its electron-pair geometry and molecular structure. Thiamine pyrophosphate has five regions of electron density, which corresponds to a trigonal bipyramidal electron-pair geometry.

To minimize repulsion, the lone pair of electrons occupies one of the equatorial positions, resulting in a seesaw molecular structure.