Lets say you are doing a simple Sn2 and get the following intermediate.
[Nu -----------C(R2)------------Lg ]
Would the Nu, and the Lg both have a partial negative charge? What about the C?
Now if we have H2O acting as the Lg from an alcohol, we know we need to protonate it so that we get R-O^+H2.
How would that effect the partial charges?
[Nu -----------C(R2)------------OH2 ]
[Nu -----------C(R2)------------Lg ]
Would the Nu, and the Lg both have a partial negative charge? What about the C?
Now if we have H2O acting as the Lg from an alcohol, we know we need to protonate it so that we get R-O^+H2.
How would that effect the partial charges?
[Nu -----------C(R2)------------OH2 ]