Metal Complexes
Metal Complexes - Related Videos
06:40
Synthesis of a Water-soluble Metal–Organic Complex Array
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Cited by 1 •
2016
A potential general method for the synthesis of water-soluble multimetallic peptidic arrays containing a predetermined sequence of metal centers is presented.
11:14
Anticancer Metal Complexes: Synthesis and Cytotoxicity Evaluation by the MTT Assay
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Cited by 64 •
2013
A method for synthesis of air-sensitive titanium and vanadium anticancer agents is described, along with the evaluation of their cytotoxic activity towards human cancer cell line by the MTT Assay.
14:44
Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR
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Cited by 4 •
2013
The NMR-solution structure of a metallochaperone model peptide with Cu (I) was determined, and a detailed protocol from sample preparation and 1D and 2D data collection to a three-dimensional structure is described.
11:05
Quadruply Metal-Metal Bonded Paddlewheels
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2023
Source: Corey Burns, Tamara M. Powers, Department of Chemistry, Texas A&M University Paddlewheel complexes are a class of compounds comprised of two metal ions (1st, 2nd, or 3rd row transition metals) held in proximity by four bridging ligands (most commonly formamidinates or carboxylates) (Figure 1). Varying the identity of the metal ion and the bridging ligand provides access to large families of paddlewheel complexes. The structure of paddlewheel complexes allows for metal-metal bonding,...
08:43
Molten-Salt Synthesis of Complex Metal Oxide Nanoparticles
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Cited by 32 •
2018
Here, we demonstrate a unique, relatively low-temperature, molten-salt synthesis method for preparing uniform complex metal oxide lanthanum hafnate nanoparticles.
FAQs
Ligand identity and metal oxidation state alter the complex’s electronic structure, which in turn affects observable properties and chemical behavior. Because ligands donate electron pairs through their donor atoms, changing the surrounding ligands or the metal’s oxidation state can modify color, magnetism, and reactivity. Chemists use these relationships to tune complexes for specific analytical, catalytic, or functional purposes.
Coordination number and geometry describe how many donor atoms surround the metal and how those connections are arranged. These structural features influence the complex’s electronic structure and therefore its physical and chemical properties. Comparing complexes with different arrangements helps chemists relate molecular structure to color, magnetism, and reactivity rather than treating those properties as independent observations.
Donor atoms on ligands supply electron pairs to the central metal, creating coordinate covalent bonds. This electron donation establishes the metal’s immediate chemical environment and provides the structural basis for the complex’s distinctive behavior. The nature of the donor atoms and ligands therefore becomes an important variable when chemists investigate reactivity or design compounds with selected properties.
Spectroscopy provides a way to characterize metal complexes by examining signals associated with their chemical and physical properties. Interpreting those observations alongside ligand identity, oxidation state, coordination number, and geometry helps chemists connect measured behavior with electronic structure. This approach supports substance characterization in analytical chemistry and helps distinguish complexes that may have different structures or reactivities.
Chemists design metal complexes as catalysts by selecting combinations of metals and ligands that produce desired electronic and structural environments. Since ligand identity, oxidation state, coordination number, and geometry influence reactivity, adjusting these features can help control the pathway a reaction follows. Such catalyst design is useful when a particular chemical transformation or reaction behavior is required.
Metal complexes support several areas of chemistry and related research. They are studied in metal-dependent biological processes, incorporated into medicinal compounds, and used in separation methods and sensors. Their distinctive chemical and physical properties also make them relevant to functional materials. These applications demonstrate how coordination chemistry connects inorganic, analytical, biological, medicinal, and industrial chemistry.