The sulfamate ion, H₂NSO₃⁻, can be thought of as having been formed from the amide ion, NH₂⁻, and sulfur trioxide, SO₃.
(a) What are the electron-pair and molecular geometries of the amide ion and of SO₃? What are the hybridizations of the N and S atoms, respectively?
(b) Sketch a structure for the sulfamate ion, and estimate the bond angles.
(c) What changes in hybridization do you expect for N and S in the course of the reaction?

(d) Is SO₃ the donor of an electron pair or the acceptor of an electron pair in the reaction with amide ion? Does the electrostatic potential map shown below confirm your prediction?

Transcribed Image Text:

NH₂ + SO3 → H₂N-SO3-? -