Fashioning the 1930s

Kohlmann, Benjamin

doi:10.1017/9781108646345.015

Cited by 2 publications

(3 citation statements)

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“…the K 2 PtCl 6 -type hydrides Mg 2 TH 6 (T = Ru, Os), M 2 FeH 6 and M 2 IrH 5 (M = Mg, Ca, Sr, Eu, Eu 1-x Ca x , Eu 1-x Sr x ) ( Table 1). [14,[17][18][19][20][21][22] The latter exhibit disordered K 2 PtCl 6 -type structures, with a hydrogen atom occupation of 5/6. This factor Z. Anorg.…”

Section: Complex Transition Metal Hydridesmentioning

confidence: 99%

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Ion Segregation and Electrostatic Imbalance in Metal Hydrides

Voss

Kohlmann

2017

Zeitschrift anorg allge chemie

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Crystal chemical indices of ion segregation and electrostatic imbalance after Beck help to rationalize inorganic crystal structures and sometimes even to predict them. Metal hydrides, from hydridoaluminates and -gallates, to complex transition metal hydrides, ternary ionic magnesium hydrides and mixed anionic hydrides, were investigated using these tools. Beck's ion segregation and electrostatic imbalance indices are found to work well in explaining crystal structures of * Prof. Dr. H. Kohlmann

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Section: Complex Transition Metal Hydridesmentioning

confidence: 99%

“…Further examples from several subclasses of metal hydrides are discussed subsequently. This investigation focuses on the most ionic metal hydrides; however, it also includes complex metal hydrides, in which hydrogen is considered to bind covalently to a transition metal, [9,13,14] and even one example of a metallic interstitial hydride.…”

Section: Introductionmentioning

confidence: 99%

Ion Segregation and Electrostatic Imbalance in Metal Hydrides

Voss

Kohlmann

2017

Zeitschrift anorg allge chemie

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“…[11] K 2 PtCl 6 -type related structures like M II FeH 6 , M II RuH 6 , M II CoH 5 , M II IrH 5 , M II NiH 4 , and M II PdH 4 (M II = Ca, Sr, Ba, Eu, Yb) are also related to the cubic perovskite type as vacancy derivatives and are classified as coordination compounds with 18-electron hydridometalate complexes with covalent and ionic bonding for hydrogen atoms. [12][13][14][15] The cubic perovskite type is an attractive host for luminescence materials. These require a large bandgap, i.e.…”

Section: Introductionmentioning

confidence: 99%

Structural Distortion in Perovskite Type KCaH_3–xF_x (0.54 ≤ x ≤ 3)

Pflug

Kohlmann

2020

Zeitschrift anorg allge chemie

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Representatives of the solid solution series KCaH3–xFx were synthesized by solid state reactions from binary metal hydrides and fluorides. Crystal structures were analyzed by Rietveld refinement based on X‐ray powder diffraction. The degree of substitution was determined by refinement of site occupancy factors as well as elemental analysis for hydrogen. Three sections of x in KCaH3–xFx can be distinguished. For x < 0.54 no hydride fluoride exists, i.e. there is no hydride of the composition KCaH3 and the solid solution starts only at x = 0.54. The tetragonal SrTiO3 type structure with partial ordering of hydrogen and fluorine atoms is found for 0.54 ≤ x ≤ 1.7. Both anion positions show mixed occupation with some preference of hydrogen atoms for 8h and fluorine atoms for 4a sites (I4/mcm, SrTiO3 type). For fluorine‐rich compounds a solid solution with orthorhombic GdFeO3 type structure (Pnma) and a perfectly statistical distribution of hydrogen and fluorine atoms is found (1.8 ≤ x ≤ 3). Interatomic distances resulting from the structure refinements are in the range of typical K–H, K–F, Ca–H, and Ca–F distances for mainly ionic compounds.

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Fashioning the 1930s

Cited by 2 publications

References 8 publications

Ion Segregation and Electrostatic Imbalance in Metal Hydrides

Ion Segregation and Electrostatic Imbalance in Metal Hydrides

Structural Distortion in Perovskite Type KCaH_3–xF_x (0.54 ≤ x ≤ 3)

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Fashioning the 1930s

Cited by 2 publications

References 8 publications

Ion Segregation and Electrostatic Imbalance in Metal Hydrides

Ion Segregation and Electrostatic Imbalance in Metal Hydrides

Structural Distortion in Perovskite Type KCaH3–xFx (0.54 ≤ x ≤ 3)

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Structural Distortion in Perovskite Type KCaH_3–xF_x (0.54 ≤ x ≤ 3)