Fig. 1. Schematic diagram of coordinate system of planar molecules ${\mathrm{H}}_{\mathrm{3}}^{\mathrm{2}+}$ in 3D simulation

Fig. 2. Comparison of odd and even harmonic spectra and corresponding dipoles of 3D orientation planar molecules${\mathrm{H}}_{\mathrm{3}}^{\mathrm{2}+}$. (a) $\theta ={\mathrm{90}}^{\mathrm{o}}$,$\phi ={\mathrm{20}}^{\mathrm{o}}$ odd and even harmonic spectra; (b) $\theta ={\mathrm{90}}^{\mathrm{o}}$,$\phi ={\mathrm{50}}^{\mathrm{o}}$ odd and even harmonic spectra; (c) $\theta ={\mathrm{90}}^{\mathrm{o}}$, $\phi ={\mathrm{20}}^{\mathrm{o}}$ and $\phi ={\mathrm{50}}^{\mathrm{o}}$ odd and even dipoles; (d) $\theta ={\mathrm{45}}^{\mathrm{o}}$, $\phi ={\mathrm{20}}^{\mathrm{o}}$ odd and even harmonic spectra; (e) $\theta ={\mathrm{45}}^{\mathrm{o}}$, $\phi ={\mathrm{50}}^{\mathrm{o}}$ odd and even harmonic spectra; (f) $\theta ={\mathrm{45}}^{\mathrm{o}}$, $\phi ={\mathrm{20}}^{\mathrm{o}}$ and $\phi ={\mathrm{50}}^{\mathrm{o}}$ odd and even dipoles

Fig. 3. Comparison of results for planar equilateral triangle configuration

Fig. 4. Comparison of results for planar isosceles triangle configuration

Fig. 5. Comparison of results for planar scalene triangle configuration