Merck Molecular Force Field (MMFF) is a family of force fields developed by Merck Research Laboratories. They are based on the MM3 force field. MMFF is not optimized for a single use (like either simulating proteins or small molecules), but tries to perform well for a wide range of organic chemistry calculations. The parameters in the force field have been derived from computational data.
The first published force field in the family is MMFF94. A set of molecular structures and the corresponding output of Halgren's MMFF94 implementation is provided at the Computational Chemistry List (http://server.ccl.net/cca/data/MMFF94/) for validation of other MMFF implementations.
Could it be, what you see, isn't it?
One goes, may not knows, here they goes
I can go, it's not bad to know
And you? Are you not, what they'll find?
All the time?
Hey, won't you go
Hey, won't you go
Hey, won't you go, away!
Won't you go away?
Hey!
Nothing is red
Hey!
Nothing is red
Hey!
Nothing is red
Hey!
Hey, won't you go
Hey, won't you go
Hey, won't you go, away!
Won't you go away?
Hey!
Nothing is red
Hey!
Nothing is red
Hey!
Nothing is red
Hey!
Nothing is red
Hey!
Nothing is red
Hey!
Nothing is red
Hey!