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Ch.12 - Solids and Solid-State Materials

Chapter 12, Problem 112

What is the coordination environment of the K+ ions in the fullerene-based superconductor K3C60?

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Hey everyone were as true or false. The potassium Plus ions have october federal coordination to four carbon 60 minus molecular ions in K six C 60. A full marine based superconductor first. Let's go ahead and think about the type of unit cell. K six C 60 has and that's going to be a body centered cubic unit cell. And because it's a body centered cubic unit cell, our carbon 60 minus molecular ions are going to be at the cell corners and body center. Now our potassium Plus ions are going to be at half of the sites in the faces of the cell. And thinking about our coordination, potassium plus will have approximate tetra he drel coordination 24 carbon 60 minus molecular ions. So this statement is going to be false and the reason why is because the potassium plus ions will not have an octahedron coordination, but it will have a tetrahedron coordination. Now I hope that made sense and a lot of stuff. You have any questions
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