Table 11. A priori bond valences for Sm³⁺3Nb⁵⁺O₄S₃ .

Observed bond valences for Nb⁵⁺ are given in parentheses.

	Sm1	Sm2	Sm3	Nb	∑
O1	0.392	0.402	0.369	0.837 (0.948)	2
O2	0.515	0.525		0.960 (1.057)	2
O3	0.400		0.377 ×2×2	0.845 (1.015)	2
O4	0.392	0.402	0.369	0.837 (0.595)	2
S1	0.337 ×2×2	0.348 ×2×2	0.315 ×2×2		2
S2		0.326 ×2×2	0.293 ×2×2	0.761 (0.702)	2
S3	0.313 ×2×2	0.324	0.291	0.759 (0.546)	2
∑	3	3	3	5