Upper mantle carbonates are magnesium-rich and iron-poor. Under lower mantle conditions, it is thought that the arrangement of electrons in carbonate minerals changes under the pressure stress in such ...

Ionized forms of iron, the most common being iron II and iron III, have varying numbers of electrons as they add or shed electrons when combined with atoms of other elements. "Iron VI is a very rare ...

High-valent oxoiron(IV) and formally oxoiron(V) species have been spectroscopically identified as active intermediates in the catalytic cycles of a number of enzymatic systems 1,2,3,4,5,6,7,8,9,10.

Maria Camila Aguilera, 4th year Chemistry PhD Candidate at the University of Rochester, Rochester NY US. Colombian chemist Maria Camila Aguilera is working on catalysts based on iron, which could open ...

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Washington, D.C.-- Carbonates are a group of minerals that contain the carbonate ion (CO32-) and a metal, such as iron or magnesium. Carbonates are important constituents of marine sediments and are ...