υ(a)

IR intensities(a)

υ(b)

IR intensities(b)

Ni(1)-O(3)

-

-

269.9

1.7

Ni(1)-O(2)

Ni(1)-N(6)

-

-

-

-

269.9

576.8

1.7

31.1

Ni(1)-N(20)

O(3)-C(12)

-

1123.4

-

19.8

506.1

1300.9

1.7

220.6

N(6)-C(23)

O(11)-C(12)

C(12)-C(23)

1123.4

1841.2

989.5

19. 8

289.5

28.1

1099.9

1760.2

1012.2

4.2

1132.4

3.3