## Abstract

Two-, three-, and four-bond ^{19}F-^{19}F spin-spin coupling constants (^{n}J_{FF}) for a set of small fluoro-substituted organic molecules have been computed using *ab initio* equation-of-motion coupled cluster singles and doubles (EOM-CCSD) theory. The computed values reproduce the experimental signs and magnitudes of ^{n}J_{FF}. The straight line that relates the experimental and computed coupling constants has a slope of approximately 1 and passes through the point (0,0 Hz) within the uncertainties of the fit. Hence, EOM-CCSD values of ^{n}J_{FF} should be excellent predictors of experimental values when these are not available. All of the components of ^{n}J_{FF} except for the diamagnetic spin-orbit term may be large and must be evaluated if agreement between theory and experiment is to be obtained.

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