Table 4 Important optimized bond lengths (Å) and bond angles (°) of [CuL(H2O)Cl] and [NiL(H2O)NO3] complexes.

From: Synthesis and biological evaluation of ibuprofen/o-vanillin Schiff base complexes with anti-inflammatory, anti-proliferative and anti-SARS-COV-19 activities

Bond lengths of [CuL(H2O)Cl]

Bond lengths of [NiL(H2O)NO3]

Cu-O1 = 2.053

Cu-O2 = 1.911

Ni-O1 = 1.917

Ni-O2 = 1.897

Cu-N1 = 1.999

Cu-Cl = 2.333

Ni-N1 = 1.892

Ni-O3 = 1.842

Bond angles of [CuL(H2O)Cl]

Bond angles of [NiL(H2O)NO3]

O1-Cu-O1 = 94.64

O1-Cu-O2 = 164.3

N1-Ni-O1 = 88.27

N1-Ni-O2 = 178.3

N1-Cu-O2 = 89.71

N1-Cu-Cl = 165.2

N1-Ni-O2 = 93.87

O1-Ni-O3 = 176.0

O1-Cu-Cl = 83.99

 

O1-Ni-O2 = 93.17

 

O2-Cu-Cl = 96.57

N1-O1-Cl-O2 = -7.321*

O2-Ni-O3 = 84.73

N1-O3-O2-O1 = -3.059*

  1. *Dihedral angle.