  Implementation of quantum information processing based on spatially localized
electronic spins in stable molecular radicals is discussed. The necessary
operating conditions for such molecules are formulated in self-assembled
monolayer (SAM) systems. As a model system we start with 1, 3 -diketone types
of neutral radicals. Using first principles quantum chemical calculations we
prove that these molecules have the stable localized electron spin, which may
represent a qubit in quantum information processing.
