R₁,R₂-C=S

R₁

R₂

N_f

C=S

C–N

N

N

5994

1.678 (0.014)

1.352 (0.015)

N³

N³

5743

1.677 (0.014)

1.352 (0.015)

N

C

1602

1.662 (0.021)

1.341 (0.027)

N³

C³

1010

1.666 (0.019)

1.344 (0.028)

N³

C⁴

553

1.656 (0.021)

1.336 (0.022)

N²

C³

32

1.675 (0.018)

1.342 (0.028)

C

C

183

1.665 (0.036)

–

C³

C³

123

1.673 (0.029)

–

C³

C⁴

46

1.660 (0.038)

–

C⁴

C⁴

14

1.607 (0.020)

–