Like Sherri, I have to plant impatiens in the shade here.
The New Guinea impatiens can take a little bit more sun than the other types, but even those wilt quickly with the heat we can get in summer.
I've actually given up
growing them, as they are a bit too fussy for me. I do, however, plant tons of them in my parents' gardens, as they have lots of shade there, and there aren't too many plants that do well there for them.