Table 6. A comparison of key geometric parameters (Å, °) in structures related to (I).

Compound	Zn—S, N (chelate 1)	Zn—S, N (chelate 2)	range of X—Zn—Y angles	chelate 1/chelate 2 angle	τ4	Ref.
(I)	2.2558 (5), 2.0757 (16)	2.2618 (5), 2.0688 (16)	86.77 (4)–131.16 (2)	73.28 (3)	0.72	This work
(II) a	2.2825 (8), 2.0526 (17)	2.2689 (7), 2.0523 (17)	87.00 (5)–133.99 (5)	73.49 (6)	0.70	Tan et al. (2017 ▸)
	2.2706 (7), 2.0727 (17)	2.2824 (9), 2.0495 (17)	85.99 (5)–131.30 (6)	77.00 (6)	0.74
(III)	2.2880 (12), 2.042 (3)	2.2758 (10), 2.070 (3)	86.73 (9)–127.92 (5)	79.68 (13)	0.74	Tan et al. (2018 ▸)
(IV)	2.2524 (10), 2.073 (3)	2.2493 (9), 2.060 (2)	87.06 (7)–128.55 (4)	76.11 (9)	0.74	Barbosa et al. (2018 ▸)
(V)	2.2636 (7), 2.068 (2)	2.2529 (8), 2.041 (2)	86.41 (6)–128.29 (6)	78.82 (8)	0.73	Barbosa et al. (2018 ▸)

Note: (a) Two independent mol­ecules comprise the asymmetric unit.