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Updated: Jul 18, 2025
11:51
Facile Preparation of 4-Substituted Quinazoline Derivatives
Published on: February 15, 2016
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Metal halide coordination compounds with quinazolin-4(3H)-one
Kambarali K Turgunov1,2, Ulli Englert3
1S.Yunusov Institute of the Chemistry of Plant Substances, Academy of Sciences of Uzbekistan, Mirzo Ulugbek Str., 77, Tashkent 100170, Uzbekistan.
Summary
This study reports three new coordination compounds of quinazolin-4(3H)-one with group 12 halides. These compounds exhibit diverse structures, including chain polymers and discrete complexes, linked by hydrogen bonds.
Area of Science:
- Coordination Chemistry
- Materials Science
- Crystallography
Background:
- Quinazolin-4(3H)-one (quinoz) is a heterocyclic compound with potential applications in coordination chemistry.
- Group 12 metal halides (Cd, Hg) are known to form diverse coordination structures.
- Understanding the coordination behavior of quinoz with metal halides can lead to novel materials.
Purpose of the Study:
- To synthesize and characterize new coordination compounds of quinazolin-4(3H)-one with divalent group 12 halides.
- To investigate the structural diversity and coordination modes of these complexes.
- To explore the role of hydrogen bonding in the supramolecular assembly of these compounds.
Main Methods:
- Synthesis of coordination compounds via reaction of quinazolin-4(3H)-one with cadmium and mercury halides.
- Single-crystal X-ray diffraction analysis to determine the crystal structures of the synthesized compounds.
- Analysis of coordination environments, bonding, and intermolecular interactions (hydrogen bonding, pi-pi interactions).
Main Results:
- Three coordination compounds were successfully synthesized: two chain polymers ([CdBr2(quinoz)], [HgCl2(quinoz)]) and one discrete tetrahedral complex ([CdI2(quinoz)2]).
- Coordination in all complexes occurs via the nitrogen atom ortho to the carbonyl group of quinoz.
- The polymeric complexes feature five-coordinate metal centers with halide bridges, while the discrete complex has a tetrahedral geometry. Hydrogen bonds link the structures into extended networks or strands.
Conclusions:
- Quinazolin-4(3H)-one acts as a ligand coordinating through its N3 atom to group 12 metal halides.
- The choice of metal halide and stoichiometry dictates the formation of either chain polymers or discrete complexes.
- Hydrogen bonding plays a crucial role in the supramolecular architecture, leading to di-periodic networks or mono-periodic strands.
Keywords:
cadmium(II) coordination polymercrystal structurehalide-bridged coordination polymersmercury(II) coordination polymerquinazolinone coordinationtetrahedral cadmium(II) complex.More Related Videos
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