Table 3 FT-IR characteristic absorption of Cu(II)-MP-bis(AMP)@boehmite.

From: Tetradentate copper complex supported on boehmite nanoparticles as an efficient and heterogeneous reusable nanocatalyst for the synthesis of diaryl ethers

Entry

Functional group

Absorption (cm−1)

References

1

C–H stretch

 < 3000

51

2

O–H stretch

3318

51

3

O–H bending

1385

15

4

C=N stretch

1634

15

5

Si–O

1073

51

6

Al–O

478, 623, 741

52

7

OH⋯OH

1164

52

8

NaNO3

1650

52

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