(a) Sn 3 N 4 , -Si 3 N 4 and g-Ge 3 N 4 are the...
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(a) Sn3N4, γ-Si3N4 and g-Ge3N4 are the first examples of nitride spinels. What is a spinel, and how do the structures of these nitrides relate to that of the oxide Fe3O4? Comment on any features that distinguish the nitride spinels from typical oxide analogues.
(b) The reaction between O3 and AsCl3 at 195K leads to an As(V) compound A. Raman spectra of A in CH2Cl2 solution are consistent with a molecular structure with C3v symmetry. However, a singlecrystal X-ray diffraction study of A at 153K reveals a molecular structure with C2h symmetry. Suggest an identity for A and rationalize the experimental data.
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a Spinel and Nitride Spinels Spinel A spinel is a type of crystal structure commonly found in certain minerals and synthetic compounds It belongs to the cubic crystal system and has the general formul...View the full answer
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