Sears resonances

The experimentally observable effects of the linear relativistic Renner coupling are perturbations in the vibronic spectra of 11 states. Since zero-order energy levels which differ by one quantum of the bending mode, the effects are maximal for o). These perturbations have previously been observed in the Renner spectra of triatomic radicals, such as NCO, NCS and GeCH [40-42] and have been termed Sears resonances [42]. Another signature of the linear relativistic vibronic coupling is intensity transfer to vibronic levels with an odd number of quanta of the bending mode [43,44]. 

A. S. Lipton, J. A. Sears and P. D. EUis, A general strategy for the NMR observation of half-integer quadrupolar nuclei in dilute environments. /. Magn. Reson., 2001,151,48-59. 

Sears, P. G., Wolford, R. K., and Dawson, L. R. (1956). Conductances of some acids, bromides, and picrates in dimethylformamide at 25°C. J. Electrochem. Soc. 103, 633-636. Senesi, N. (1981). Free radicals in electron donor-acceptor reactions between a soil humic acid and photosynthesis inhibitor herbicides. Z. Pflanzenernahr Dung. Bodenkd. 144, 580-586. Senesi, N., Chen, Y., and Schnitzer, M. (1977a). Hyperfine splitting in electron spin resonance spectra of fulvic acid. Soil Biol. Biochem. 9, 371-372. 

Sears, B. (1975). /. Membrane Biol. 20, 59. 1 3C Nuclear Magnetic Resonance Studies of Egg Phosphatidylcholine. 

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