for occupied spin orbitals |i , |j , virtual spin orbitals projector |a , |b , and Coulomb operator r -1 12 , and two-electron geminal function w 12 . This approximation may be formulated in a way which includes no virtual orbital dependence. Global hybrid functionals which include UW12 correlation such as B-LYP-osUW12 have been shown to give accurate results without a virtual orbital dependence. In this work we wish to create a range-separated UW12 hybrid functional with correct long-range behavior using the ωB97 exchange-correlation functional as a starting point. Of particular interest are the ωB97X-V, ωB97M-V and ωB97M(2) functionals optimized using the survival of the fittest strategy. These range-separated hybrid functionals are among the most accurate functionals currently available.