Dedication

*Dedicated affectionately to my lovely children and family: Shivansh, Rudransh and Divyansh.*

**Chapter 1**

Review

**Abstract**

**1. Introduction**

**1**

*and Saikat Sarkar*

Crystal Structure and Solid-State

Properties of Metal Complexes of

the Schiff Base Ligands Derived

from Diacetylmonoxime: A Brief

The fabulous advancement of a large section of modern coordination chemistry

depends upon different kinds of strategically designed and functionally tuned ligand systems; Schiff base ligands play a pivotal role among them. Such Schiff bases become more motivating when they are designed to be synthesized using very simple organic molecules. This paper reviews our work on a family of three functionally different types of Schiff base ligands, derived from diacetylmonoxime, which have been employed to synthesize mononuclear metal complexes with various binding modes of ligands and topologies around the metal centers. Such Schiff base ligands have been synthesized by reacting diacetylmonoxime with diethylenetriamine, 1,3-diaminopropane-2-ol, and morpholine N-thiohydrazide. The synthesized Schiff bases and the metal complexes of such "privileged ligands" show many interesting supramolecular coordination architectures involving different weak

*Palash Mandal, Uttam Das, Kamalendu Dey*

forces, e.g., H-bonding, C–Hπ interactions, etc.

**Keywords:** Schiff base, diacetylmonoxime, crystal structure,

weak force interactions, semiconducting behavior, optical properties

The synthesis and characterization of metal complexes of Schiff bases have been started since 1865. But the importance of Schiff base ligands in several fields compelled us to consider it as a "privileged ligand" even in recent days [1, 2]. Currently, there has been considerable interest in the chemistry of Schiff base metal complexes, primarily because of their tremendous biochemical activity, viz*.*, antibacterial [3, 4], antimalarial [5, 6], antiviral [7, 8], and antitumor activities [9–11]. Besides, some transition metal Schiff base complexes were found to be efficient catalysts in organic synthesis [12–18]. Such types of Schiff base metal complexes are also very interesting for opening of a new pathway in crystal engineering [19, 20]. Various kinds of supramolecules of diverse fascinating structures are being
