![[Figure 2]](zq2141fig2mag.jpg)
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Figure 2
The ![[pi]](/logos/entities/pi_rmgif.gif) - stacking and N (pyrazinyl) interactions between the mononuclear units, which are respectively shown as thick red-dashed lines and thin blue-dashed lines. ![[article HTML]](../../../../../graphics/viewarticleborder.gif)
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Figure 2
The - stacking and N(pyrazinyl) interactions between the mononuclear units, which are respectively shown as thick red-dashed lines and thin blue-dashed lines.
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![[Figure 2]](zq2141fig2.jpg)