Structures of1,2,3and7have been determined by single crystal Xray
diffraction analysis (Fig. 2 and 3). Details about the crystallographic
data and selected geometrical parameters are gathered
through Tables 2–4. The complexes 1 and 2 crystallizes in triclinic
system with Pbar1 space group. The complex 1 consists of two
2-pcdpm ligands and two Cu(acac) units creating a rectangular centrosymmetric
dimeric structure. The metal centre in this molecule
(Fig. 2a) adopted a distorted square pyramidal geometry wherein
equatorial positions are occupied by the pyrrolic nitrogen (N1, N2)
from one dipyrromethene and O1, O2 from acac. The Cu–N(dp