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In most main group element compounds, the valence electrons of the isolated atoms combine to form chemical bonds that satisfy the octet rule. For instance, the four valence electrons of carbon overlap with electrons from four hydrogen atoms to form CH4. The one valence electron leaves sodium and adds to the seven valence electrons of chlorine to form the ionic formula unit NaCl (Figure 1a). Transition metals do not normally bond in this fashion. They primarily form coordinate covalent bonds, a...
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The structure of a crystalline solid, whether a metal or not, is best described by considering its simplest repeating unit, which is referred to as its unit cell. The unit cell consists of lattice points that represent the locations of atoms or ions. The entire structure then consists of this unit cell repeating in three dimensions. The three different types of unit cells present in the cubic lattice are illustrated in Figure 1.
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The Cartesian coordinate plane is a fundamental structure in mathematics that enables the visualization of relationships between numerical values in two dimensions. It is formed by two intersecting number lines: a horizontal x-axis and a vertical y-axis. These axes meet at the origin, the point where both values are zero. Their intersection divides the plane into four quadrants labeled in a counterclockwise direction starting from the upper right.An ordered pair of numbers represents every...
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Copper(I) iodide ribbons coordinated with thiourea derivatives.

Damian Rosiak1, Andrzej Okuniewski1, Jarosław Chojnacki1

  • 1Department of Inorganic Chemistry, Faculty of Chemistry, Gdańsk University of Technology, G. Narutowicza 11/12, 80-233 Gdańsk, Poland.

Acta Crystallographica. Section C, Structural Chemistry
|December 6, 2018
PubMed
Summary

This study synthesized two novel copper(I) iodide coordination polymers using bromophenylthiourea and iodophenylthiourea ligands. Structural analysis revealed distinct polymeric chains with copper-iodide backbones, showcasing unique ligand coordination and structural motifs.

Keywords:
benzothiazolebenzoylthioureacoordination polymerscopper(I) iodidecrystal structurehybrid inorganic chains

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Area of Science:

  • Coordination Chemistry
  • Materials Science
  • Crystallography

Background:

  • Copper(I) iodide (CuI) is a versatile material with applications in catalysis and optoelectronics.
  • Polymeric coordination compounds offer tunable properties based on metal-ligand interactions.
  • Thiourea derivatives are known to form stable complexes with transition metals.

Purpose of the Study:

  • To synthesize and characterize novel copper(I) iodide coordination polymers.
  • To investigate the structural diversity arising from different substituted phenylthiourea ligands.
  • To explore the coordination behavior of thiourea derivatives with CuI.

Main Methods:

  • Reaction of copper(I) iodide with 1-benzoyl-3-(4-bromophenyl)thiourea and 1-benzoyl-3-(2-iodophenyl)thiourea.
  • Single-crystal X-ray diffraction analysis for structural determination.
  • Characterization of the resulting polymeric structures and their bonding.

Main Results:

  • Two distinct polymeric copper(I) iodide coordination compounds were synthesized and characterized.
  • The first product, {[CuI(C14H11BrN2OS)]·0.5C3H6O}n, features a (CuI)n double chain with thiourea S-atom coordination.
  • The second product, [Cu2I2(C14H10N2OS)]n, involves ligand dehalogenation and cyclization, forming N-(benzo[d]thiazol-2-yl)benzamide, which bridges a (CuI)n quadruple chain.

Conclusions:

  • The coordination polymers exhibit different stoichiometries and molecular organizations despite similar precursors.
  • Both structures contain polymeric (CuI)n chains with iodine atoms bridging multiple copper centers.
  • The observed structures are stabilized by weak intermolecular interactions, highlighting the role of ligand modification in dictating polymer architecture.