Related Experiment Video
Updated: May 4, 2026
12:27
Synthesis of Hypervalent Iodonium Alkynyl Triflates for the Application of Generating Cyanocarbenes
Published on: September 8, 2013
10.3K
Aminotroponiminato(chloro)germylene stabilized copper(I) iodide complexes: synthesis and structure
Dhirendra Yadav1, Rahul Kumar Siwatch, Soumen Sinhababu
1Department of Chemistry, Indian Institute of Technology Delhi , Hauz Khas, New Delhi 110 016, India.
Inorganic Chemistry
|December 24, 2013
Summary
Researchers synthesized novel germylene-stabilized copper(I) iodide complexes with varying copper iodide cores (tetrameric, monomeric, dimeric). These complexes exhibit interesting interconversion properties and were characterized by spectroscopy and X-ray diffraction.
Area of Science:
- Organometallic Chemistry
- Coordination Chemistry
- Materials Science
Background:
- Germylene ligands offer unique electronic and steric properties for stabilizing metal complexes.
- Copper(I) iodide complexes are crucial in catalysis and materials science.
- Understanding the coordination behavior of germylenes with copper is essential for developing new functional materials.
Purpose of the Study:
- To synthesize and characterize novel germylene-stabilized copper(I) iodide complexes.
- To investigate the structural diversity and interconversion pathways of these complexes.
- To explore the coordination chemistry of aminotroponiminato(chloro)germylene with copper(I) iodide.
Main Methods:
- Reaction of aminotroponiminato(chloro)germylene with copper(I) iodide in various solvents and with different additives (acetonitrile, dichloromethane, pyridine).
- Characterization using multinuclear NMR spectroscopy (e.g., 1H, 13C, 29Si, 63Cu NMR).
- Single-crystal X-ray diffraction to determine the solid-state structures and bonding parameters.
Main Results:
- Synthesis of three distinct copper(I) iodide complexes featuring tetrameric (Cu4I4), monomeric (CuI), and dimeric (Cu2I2) cores stabilized by the germylene ligand.
- Observation of interconversion between monomeric and dimeric complexes, and conversion of the tetrameric complex to monomeric and dimeric forms under specific conditions.
- All copper atoms are tetracoordinate, with Ge(II)-Cu(I) bond lengths ranging from 2.308(1) to 2.345(1) Å.
Conclusions:
- The aminotroponiminato(chloro)germylene ligand effectively stabilizes diverse copper(I) iodide architectures.
- The synthesized complexes demonstrate fluxional behavior and interconversion capabilities, highlighting the dynamic nature of germylene-copper interactions.
- This study expands the scope of germylene-metal coordination chemistry and provides insights into the formation of polynuclear copper iodide clusters.
More Related Videos
![[DPEPhosbcpCu]PF6: A General and Broadly Applicable Copper-Based Photoredox Catalyst](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F59739.jpg&w=3840&q=50)
09:12[DPEPhosbcpCu]PF6: A General and Broadly Applicable Copper-Based Photoredox Catalyst
Published on: May 21, 2019
8.8K
09:54Chemoselective Preparation of 1-Iodoalkynes, 1,2-Diiodoalkenes, and 1,1,2-Triiodoalkenes Based on the Oxidative Iodination of Terminal Alkynes
Published on: September 12, 2018
7.0K
Related Concept Videos
02:34Structural Isomerism
16.8K
Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly,...
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly,...
16.8K
01:19Complexation Equilibria: The Chelate Effect
1.7K
In complexation reactions, metal atoms or cations interact with ligands to form donor-acceptor adducts called metal complexes. Ligands that bind through one donor site are monodentate, ligands with two donor sites are bidentate, and those with more than two donor sites are polydentate ligands. For example, ethylene diamine is a bidentate ligand that binds through two nitrogen donor atoms, forming a five-membered ring. EDTA is a polydentate ligand that binds through four oxygen and two nitrogen...
1.7K
03:45Formation of Complex Ions
18.8K
A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
18.8K
02:52Stereoisomerism
11.1K
Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...
11.1K
01:09Complexation Equilibria: Factors Influencing Stability of Complexes
997
In complexation reactions, metal cations are the electron pair acceptors, and the ligands are the electron pair donors. The stability of the metal complexes depends primarily on the complexing ability of the central metal ion and the nature of the ligands. Generally, the complexing ability of the metal ion depends on the size and charge of the ion. As the metal ion size increases, the stability of the metal complexes decreases, provided that the valency of the metal ion and the ligands remain...
997
02:57Coordination Number and Geometry
15.6K
For transition metal complexes, the coordination number determines the geometry around the central metal ion. Table 1 compares coordination numbers to molecular geometry. The most common structures of the complexes in coordination compounds are octahedral, tetrahedral, and square planar.
15.6K