27.69
[1]. R G Hicks, et al. Spin distributions, ring conformations, and spiroconjugation in "phosphaverdazyl" radicals. Inorg Chem. 21 Apr 9;(8):1865-7.
H227-H15-H19-H5
P21-P261-P26-P271-P28-P2+P52-P+P-P62+P6-P7+P78-P-P5-P51
GHS7
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