| Popis: |
In a previous study the alternant methylenes, propargylene, and some of its homologs, were investigated with electron paramagnetic resonance, and the zero-field splitting parameters of their triplet ground states determined assuming that the g -factors for all the molecules were equal to the free electron value. The same molecules have been reinvestigated at two microwave frequencies, 9.5 GHz and 15.7 GHz, for each sample preparation. With the possible exception of g zz for cyanomethylene and propargylene, the assumption of the free electron g -value is valid for a determination of the zero-field splitting parameters precise to about 1%. |
