Table 2. Crystallographic data for the three triphenylamine-substituted oligomer derivatives.

	PEH-3	PEH-8	PEH-9
Crystal system	Orthorhombic	Monoclinic	Triclinic
Space group	Pbca (61)	P121/n1 (14)	P1[combining macron] (2)
Calculated density (g cm–3)	1.239	1.280	1.291
Short contact distance (Å)	2.77 (CH···π)	3.34 (π···π)	3.48 (S···π)
		2.96 (CH···π)	3.30 (π···π)
		2.50 (CH···O)	3.34 (π···π)
		2.70 (CH···π)	3.36 (π···π)
			2.73–2.84 (CH···π)