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Correlation of angular and bond length distortions in TO4 units in crystals

Published/Copyright: August 25, 2010
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Zeitschrift für Kristallographie - Crystalline Materials
From the journal Zeitschrift für Kristallographie - Crystalline Materials Volume 175 Issue 1-2

Abstract

The bond lengths, edge lengths and angular distortions were evaluated for 311 TO4 units of distorted tetrahedral symmetry for 16 T elements in 191 compounds and for three ZnCl4 units. The bond length distortions increase fairly regularly with decreasing size of the central ion while the edge lengths and angular distortions have minima close to the ionic radius of P5+. The transition metal ions V5+, Cr6+, Mo6+ and Zn2+ and to some extent also second row elements follow the general trends observed for the other central ions. The average ratio of bond lengths to angular distortions also increases with decreasing ionic radius to a maximum at P5+. Possible influences of the valence of the central ion are also discussed. The distortions of the ZnCl4 units are considerably smaller than the average of the ZnO4 units, most likely as a result of the larger ionic size of the anions. There also appears to be an effect of the counterions since for ClO4− units in compounds of very bulky cations the average bond lengths are smaller and the average distortions are several times larger than in alkali and ammonium Perchlorates. The distortions also seem to increase with temperature.

Published Online: 2010-8-25
Published in Print: 1986-1-1

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Articles in the same Issue

  1. New family of silicate phases with the pollucite structure
  2. The crystal structure of cis-3-hydroxy-4a,9,10,10a-tetrahydro-1,4a-ethanophenanthren-2(1H)-one (2-one phenanthrene)
  3. Enumeration of 4-connected 3-dimensional nets and classification of framework silicates. 3D nets based on insertion of 2-connected vertices into 3-connected plane nets
  4. Enumeration of 4-connected 3-dimensional nets and classification of framework silicates. 3D nets based on double-bifurcated chains and the 4.82 and 4.6.12 3-connected plane nets
  5. Formation of the high temperature phase in vacuum deposited SnSe thin films
  6. Correlation of angular and bond length distortions in TO4 units in crystals
  7. Die Kristallstrukturen von drei Modifikationen des Cu(SeO3)
  8. Crystal structures of N-parabromobenzoyl-α-aminoisobutyric acid and two derivatives
  9. Crystal and molecular structures of N2-dimethylthiosalicylohydrazide, (C6H4)CSNHOHN(CH3)2
  10. Studies on clathrasils. IX*
  11. Preparation and structure determination of tetraethylammonium calcium azide, [N(C2H5)4]Ca(N3)3
  12. Crystal structure of barium nitrite, Ba(NO2)2
  13. Crystal structure of bis(N-2-phenyl-ethyl salicylideneiminato)nickel(II)
  14. Structure of a high-pressure phase Ba9Ge23O53(OH)4
  15. The molecular structure of trans 3,6-dimethyl-6-phenyltetrahydro-2-pyrone in the crystal
  16. Crystal structure of W-type SrZn2Fe16O27, a refinement
  17. Structure of thallium(I) dideuteriumphosphate, TlD2PO4
  18. Crystal structure of bis(3,5-dimethyl-l-guanyl pyrazole) copper(II) nitrate
  19. Crystal growth and physical properties of monoclinic betaine fluoroborate monohydrate, (CH3)3NCH2COO HBF4 · H2O
https://doi.org/10.1524/zkri.1986.175.1-2.43

Articles in the same Issue

  1. New family of silicate phases with the pollucite structure
  2. The crystal structure of cis-3-hydroxy-4a,9,10,10a-tetrahydro-1,4a-ethanophenanthren-2(1H)-one (2-one phenanthrene)
  3. Enumeration of 4-connected 3-dimensional nets and classification of framework silicates. 3D nets based on insertion of 2-connected vertices into 3-connected plane nets
  4. Enumeration of 4-connected 3-dimensional nets and classification of framework silicates. 3D nets based on double-bifurcated chains and the 4.82 and 4.6.12 3-connected plane nets
  5. Formation of the high temperature phase in vacuum deposited SnSe thin films
  6. Correlation of angular and bond length distortions in TO4 units in crystals
  7. Die Kristallstrukturen von drei Modifikationen des Cu(SeO3)
  8. Crystal structures of N-parabromobenzoyl-α-aminoisobutyric acid and two derivatives
  9. Crystal and molecular structures of N2-dimethylthiosalicylohydrazide, (C6H4)CSNHOHN(CH3)2
  10. Studies on clathrasils. IX*
  11. Preparation and structure determination of tetraethylammonium calcium azide, [N(C2H5)4]Ca(N3)3
  12. Crystal structure of barium nitrite, Ba(NO2)2
  13. Crystal structure of bis(N-2-phenyl-ethyl salicylideneiminato)nickel(II)
  14. Structure of a high-pressure phase Ba9Ge23O53(OH)4
  15. The molecular structure of trans 3,6-dimethyl-6-phenyltetrahydro-2-pyrone in the crystal
  16. Crystal structure of W-type SrZn2Fe16O27, a refinement
  17. Structure of thallium(I) dideuteriumphosphate, TlD2PO4
  18. Crystal structure of bis(3,5-dimethyl-l-guanyl pyrazole) copper(II) nitrate
  19. Crystal growth and physical properties of monoclinic betaine fluoroborate monohydrate, (CH3)3NCH2COO HBF4 · H2O
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