Table 2. Summary of single-crystal X-ray diffraction data (Å, °).

Slip angle between Pc aromatic = angle between centroid-to-centroid and normal of each aromatic Pc benzene; angle between aromatic planes = smallest angle between both planes that contain the stacking aromatic benzene rings.

Compound	details of packing	shortest distance between Pc aromatic	slip angle between Pc aromatic	angle between aromatic planes	Reference
Cl2—SiPc	dual benzene ring stacking	4.172, 4.172	34.87 / 36.59	1.72	Lessard, White et al. (2015 ▸)
(3MP)2-SiPc	isoindoline stacking	3.794, 3.655, 3.794	22.33 / 22.53	0.21	This work
(345F)2-SiPc	isoindoline stacking	3.716, 3.580, 3.716	18.90 / 18.90	0	Lessard, Grant et al., (2015 ▸)
(246F)2-SiPc	dual benzene ring stacking	3.860, 3.860	30.08 / 30.08	0	Lessard, Grant et al. (2015 ▸)
(3IP)2-SiPc	dual benzene ring stacking	3.716, 3.716	17.55/14.60	10.9	This work
(2secBP)2—SiPc	dual benzene ring stacking	3.947, 3.947	32.53/26.02	6.5	This work

Notes: in all cases the single crystals were grown by slow diffusion of heptane into a THF solution of the respective compound. Identical crystals of (3MP)₂-SiPc were also grown by diffusion of pentane into a solution of benzene as well as from slow evaporation of a chloro­form solution.