Table 1. Selected geometric parameters (, ) of the title compound (1), and the comparison compounds (2) and (3).

	(1a)	(1b)	(2)	(3)
S1N1	1.664(5)	1.653(5)	1.693(2)	1.668(2)
S1S2	2.064(3)	2.076(3)	2.040(1)	2.102(1)
S2S3	2.078(3)	2.067(2)	2.045(1)	2.082(1)
S3N2	1.663(6)	1.649(5)	1.687(2)	1.680(2)
N1S1S2	106.9(2)	107.3(2)	105.0(1)	110.0(1)
S1S2S3	106.05(11)	105.41(11)	105.2(2)	104.7(1)
N2S3S2	107.6(2)	107.2(2)	103.8(1)	110.3(1)
N1S1S2S3	86.6(2)	84.6(2)	93.2(7)	109.7(2)
S1S2S3N2	87.0(2)	85.9(2)	89.5(2)	95.9(1)