You can't just arbitrarily invert stereocenters as you please, you have to maintain absolute configuration. Look at molecule 1. If you imagine that looks like a pancake, and you flip it over, that's how you can get the hydrogen to point backwards as you've drawn. However, you also have to move the carbon with the chlorine over to the left, it doesn't stay on the right. That's why your configuration is off, you didn't flip the whole structure over, you only flipped that one carbon.