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Related Concept Videos

Properties of Transition Metals02:58

Properties of Transition Metals

29.8K
Transition metals are defined as those elements that have partially filled d orbitals. As shown in Figure 1, the d-block elements in groups 3–12 are transition elements. The f-block elements, also called inner transition metals (the lanthanides and actinides), also meet this criterion because the d orbital is partially occupied before the f orbitals.
29.8K
Structural Properties and Dimensions of Lumber01:21

Structural Properties and Dimensions of Lumber

401
Wood's structural properties derive from fibers aligned along the tree's length, contributing significantly to its mechanical strength. Wood exhibits up to twenty times greater tensile strength along these fibers compared to across them, and generally shows better performance under compression than tension. The length of fibers varies, with hardwoods having fibers around one twenty-fifth inch long and softwoods ranging from one-eighth to one-third inch.
The strength characteristics of...
401
Structure and Physical Properties of Alkynes02:37

Structure and Physical Properties of Alkynes

13.3K
Introduction:
In nature, compounds containing both carbon and hydrogen are known as "hydrocarbons". Aliphatic hydrocarbons are compounds whose molecules contain saturated single bonds (i.e., alkanes) or unsaturated double or triple bonds. Alkenes contain carbon–carbon double bonds and have a structural formula CnH2n. Unsaturated hydrocarbons containing carbon–carbon triple bonds are called "alkynes" and are structurally represented by the formula CnH2n-2.
The...
13.3K
Bonding in Metals02:32

Bonding in Metals

52.4K
Metallic bonds are formed between two metal atoms. A simplified model to describe metallic bonding has been developed by Paul Drüde called the “Electron Sea Model”. 
52.4K
Metal-Ligand Bonds02:51

Metal-Ligand Bonds

24.3K
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
24.3K
Alkali Metals03:06

Alkali Metals

24.6K
Group 1 elements are soft and shiny metallic solids. They are malleable, ductile, and good conductors of heat and electricity. The melting points of the alkali metals are unusually low for metals and decrease going down the group, while the density increases going down the group with the exception of potassium (Table 1).
Table 1: Properties of the alkali metals
24.6K

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Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR
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Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR

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Structural properties of sub-nanometer metallic clusters.

Francesca Baletto1

  • 1Physics Department, King's College London, WC2R 2LS, London, United Kingdom.

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|December 19, 2018
PubMed
Summary
This summary is machine-generated.

Nanoparticles exhibit diverse structures influencing their properties. Understanding these nanoscale geometries is key to designing advanced materials and applications.

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Area of Science:

  • Materials Science
  • Chemistry
  • Physics

Background:

  • Nanoscale structural investigation is crucial for understanding physicochemical properties.
  • Nanoparticles exhibit unusual geometries, necessitating their consideration as a distinct form of matter.
  • Nanoparticle structure is influenced by size, composition, ordering, and external conditions.

Purpose of the Study:

  • To provide an overview of the geometrical features of transition metal clusters.
  • To explore the various structural rearrangements of transition metal clusters.

Main Methods:

  • Review of existing literature on nanoparticle structures.
  • Analysis of geometrical characteristics and shape variations.

Main Results:

  • Nanoparticles display a wide range of non-intuitive shapes.
  • Finite temperature allows nanoparticles to fluctuate between different structural configurations.

Conclusions:

  • The complex and dynamic structures of nanoparticles offer opportunities for designing advanced materials.
  • Further research into nanoparticle geometry is essential for optimizing their applications.