Table 2. Crystal structures in the CSD with aromatic amide–pyridyl synthons along their bond angles and inter­action energy (NH₂⋯N_py).

No.	CSD refcode	Reference	Bond angle (°)	Inter­action energy (kJ mol−1)
I	MELYEI	Aghabozorg et al. (2006 ▸)	108	−54.48
II	LOTTEX	Ezekiel et al. (2024 ▸)	106	−43.30
III	PAQMIG	Ganduri et al. (2017 ▸)	110	−42.84
IV	CAYJIW	Arora et al. (2005 ▸)	167	−47.61
V	BULJOJ	Ravat et al. (2015 ▸)	156	−41.84
VI	KOHPUW	Wong et al. (2024 ▸)	154	−33.43
VII	QOQNUJ	Li et al. (2024 ▸)	148	−26.48
			148	−25.19
VIII	KUVYOR	Walshe et al. (2015 ▸)	144	−31.34
IX	XAQQUC	McMahon et al. (2005 ▸)	159	−30.46
	(2 N—H⋯N contacts)		162	−34.81
X	IVORUI	Kennedy et al. (2016 ▸)	129	−25.15
XI	QUGRIX	Barba Hernández et al. (2024 ▸)	159	−24.48
XII	DOSDOI	Boycov et al. (2024 ▸)	140	−14.14