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El trixido de azufre, SO3, es una molcula plana trigonal con simetra D3h. a.) determine el nmero de modos de vibracin normales (fundamentales) para esta

El trixido de azufre, SO3, es una molcula plana trigonal con simetra D3h.

a.) determine el nmero de modos de vibracin normales (fundamentales) para esta molcula

b.) El anlisis de coordenadas normales da las siguientes simetras para los modos de vibracin: A1', A2'',E',E'. Es este total consistente con el resultado en "a"? explique. (cada simetra E es doblemente degenerada, lo que significa dos modos de vibracin con la misma energa).

c.) Cules de estas simetras son IR activas?

d.) Cuntas absorciones fundamentales deben observarse en el espectro IR del SO3?

e.) El ion nitrato, NO3-, es plano trigonal. Cuntas absorciones fundamentales deben observarse en el espectro IR de NO3-? Explique.

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