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radical pair (or geminate pair) definition
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The term is used to identify two radicals in close proximity in solution, within a solvent cage. They may be formed simultaneously by some unimolecular process, e.g., peroxide decomposition, or they may have come together by diffusion. While the radicals are together, correlation of the unpaired electron spins of the two species cannot be ignored: this correlation is responsible for the CIDNP phenomenon. See also geminate recombination.

See also:
Quantum mechanical wavefunctions definition
Radiation detectors definition
pyranose definition
Racemic Compound definition
random access memory (RAM) definition
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