Un solvente polar prtico, es aquel que es capaz de estabilizar las cargas al formar puentes de hidrgeno con ellas. Por otro lado, uno aprtico y polar, es aquel que es capaz de formar una capa fuerte de solvatacin solo alrededor de un catin, sin formar puente de hidrgeno. El solvente prtico es capaz de solvatar cationes y aniones puesto que ambos polos de su dipolo estn fcilmente disponibles. En el ejemplo de ms abajo, que corresponde a una molcula de alcohol, el protn que es la parte positiva del dipolo del solvente, es muy pequeo y produce muy poco impedimento estrico al oxgeno que es la parte negativa del dipolo. En el caso de un solvente aprtico el ejemplo corresponde a una molcula de acetona , el oxgeno que es el polo negativo del dipolo, esta disponible para solvatar una carga positiva. Sin embargo el polo positivo del solvente, que es el carbono en este caso, queda oculto e impedido por el oxgeno y por los grupos alquilo voluminosos.

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Diferencia entre solventes proticos y apróticos



Disolvente - SN1



Disolvente - SN1


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