Figures & data
Figure 1. Synthesis of TBZA and its Co(II), Cu(II), and Zn(II) complexes.
Table 1. Crystal data and structure refinement for TBZA (1) and its Cu(II) (2) and Co(II) (3) complexes.
Figure 2. View of the two TBZA showing one of the independent molecules together with its symmetry-related by an inversion center. Displacement ellipsoids are drawn at the 30% probability level, and the intra and intermolecular H-bonds are shown in dashed line. Symmetry operations are listed in .
Table 2. Selected bond lengths (Å), angles and torsional angles (°) for TBZA (1) and its Cu(II) (2) and Co(II) (3) complexes.
Table 3. Selected intra and intermolecular hydrogen bonds for TBZA (1) and its Cu(II) (2) and Co(II) (3) complexes (Å and °).
Figure 3. FTIR spectra of TBZA, Co(II) complex, Cu(II) complex, and Zn(II) complex.
Table 4. Proposed FTIR assignment of TBZA and its metal complexes.
Figure 4. (a) DTA–TGA graphics of TBZA; (b) DSC–TGA graphics of Co(II) complex; (c) DSC–TGA graphics of Cu(II) complex; (d) DSC–TGA graphics of Zn(II) complex.
Figure 5. Proposed decomposition of TBZA..
Figure 6. Coordination of the TBZA ligand around the Cu(II) metal center, showing the displacement ellipsoids at the 30% probability level. The intra and intermolecular H-bonds are shown in dashed line. Symmetry operations are listed in .
Figure 7. Coordination of the TBZA ligand around the Co(II) metal center, showing the displacement ellipsoids at the 30% probability level. The intra and intermolecular H-bonds are shown in dashed line. Symmetry operations are listed in .
Figure 8. Powder XRD of Co(II) complex and Zn(II) complex.
