Self-assembled Transition Metal Coordination Frameworks of ...

TWOCHAPTER
Carbohydrazone, thiocarbohydrazone and
thiosemicarbazone ligands: Structural, spectral and
anticancer properties
2.1. Introduction
The design and synthesis of a polyfunctional ligand of versatile coordinating
ability to behave as building blocks is the key step for producing self-assembled
macrocyclic molecular architectures. The symmetry and the overall shape of the
resulting macrocyclic assembly are defined solely by the type and properties of the
multidentate building units uses [l]. Among the macrocycles derived, molecular
squares have received the highest attention. The synthesis and characterization of
metallosupramolecular squares have achieved growing interest for the last decade
especially because of their wide spectrum of applications in science and technology.
Of these, the grid structures of magnetic metal ions are of special interest in
information storage and processing technology [2]. The design and synthesis of
projected coordination frameworks, mainly 2>