Covalent radii revisited.

@article{Cordero2008CovalentRR,
  title={Covalent radii revisited.},
  author={Beatriz Cordero and Verónica Gómez and Ana E. Platero‐Prats and Marc Reves and Jorge Echeverr{\'i}a and Eduard Cremades and Flavia Barrag{\'a}n and Santiago Alvarez},
  journal={Dalton transactions},
  year={2008},
  volume={21},
  pages={
          2832-8
        }
}
A new set of covalent atomic radii has been deduced from crystallographic data for most of the elements with atomic numbers up to 96. The proposed radii show a well behaved periodic dependence that allows us to interpolate a few radii for elements for which structural data is lacking, notably the noble gases. The proposed set of radii therefore fills most of the gaps and solves some inconsistencies in currently used covalent radii. The transition metal and lanthanide contractions as well as the… 
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The atomic radii as defined in this way correlate well with van der Waals radii derived from crystal structures, and are derived using relativistic all-electron density functional theory calculations, close to the basis set limit.
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  • Chemistry
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  • 2015
The recent fits of additive covalent radii R(AB) = r(A) + r(B) for the title systems are reviewed and compared with alternative systems of radii by other authors or with further experimental data.
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The method chosen is a set of two-parameter correlations of Bondi's radii with repulsive-wall distances calculated by relativistic coupled-cluster electronic structure calculations, which results in new atomic radii for 16 main-group elements in the periodic table.
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Abstract Important data sets of crystallographic van der Waals radii covering major portions of the Periodic Table are reviewed, including those originally published in Pauling’s pioneering work in
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TLDR
The presented radii are predictive of drastically different chemistry under high pressure and permit an extension of chemical thinking to different thermodynamic regimes and can aid in assignment of bonded and non-bonded contacts, for distinguishing molecular entities, and for estimating available space inside compressed materials.
Valence-Length Correlations for Chemical Bonds from Atomic Orbital Exponents
  • F. Hardcastle
  • Chemistry, Physics
    Journal of the Arkansas Academy of Science
  • 2013
Pauling’s empirical bond valence-length correlation has proven valuable because it offers a quick and convenient way of checking and evaluating molecular structures and determining oxidation states
van der Waals radii of noble gases.
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The set of radii proposed is shown to provide van der Waals distances for a wide variety of noble gas···element atom pairs that represent properly the distribution of distances both in the gas phase and in the solid state.
Atomic/Ionic Radius as Mathematical Limit of System Energy Evolution.
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This work proposes a definition of atomic and ionic radii rooted in chemical principles and conceptual density functional theories, which has a clear physical interpretation and supports understanding of size-related phenomena and trends.
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