Sites of the N1 nitrogen paramagnetic centers in natural diamond crystals: Dissymmetrization of the structure as a result of plastic deformation

Using the method of EPR spectroscopy, it is shown that the N1 nitrogen centers (N–C–N⁺) are unevenly distributed over possible sites in natural brown crystals of plastically deformed diamonds. The influence of deformational dissymmetrization of the structure on the anisotropy of some physical properties of natural diamonds is discussed.