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Table 4 The dihedral angles (°) between two pyridyl rings of 2-2’-bipy in complexes 1,4 and 5

From: Synthesis, crystal structures and supramolecular architectures of square pyramidal Cu(II) complexes containing aromatic chelating N,N’-donor ligands

Complex Dihedral angle (°) inbetween
the two pyridyl rings of BIPY
1 0.98(9)
4 Cu1 Cu2
Bipy 1 Bipy 2 Bipy 1 Bipy 2
7.2(3) 1.5(5) 1.7(4) 12.2(5)
5 Cu1
9.25(19)