Self-assembled Transition Metal Coordination Frameworks of ...

ligands
between the planes of Cg(2) and Cg(4) also show slight tilted nature of quinoline rings
in molecule A. The angle between the two quinoline rings in A shows considerable
variation compared to that in B as evidenced by the dihedral angle of l7.49( 12) A.
In the crystal, A molecules are packed in the be plane and B molecules are
packed in the ab plane (Fig. 2.17). The C-H---Cg (1:-ring) interactions (Table 2.5)
involving Cg(7), Cg(8) and Cg(9) stabilize the packing in the unit cell. Only
hydrogens of molecule A interact with centroids of molecule B, the reverse is not
seen. The crystal structure cohesion is reinforced by various aromatic 1:---1: stacking
interactions (Table 2.6). We have reported these results recently [34].
Fig. 2.17. Packing of thiocarbohydrazone HZL3 in the unit cells viewed along the b
axis.
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