Research output: Contribution to journal › Article › peer-review
Using Rietveld refinement the crystal structure of the β-rubidium pentaborate has been found to be isotypic with β-potassium pentaborate: (61) Pbca - (c)14, oP112, a = 7.550(1) Å, b = 11.842(1) Å, c = 14,805(1) Å, V = 1323.7(2) Å3, Z = 8, Dcalc = 2.68 · 103kg/m3. With the aid of high temperature X-ray diffractometry a strongly anisotropic thermal expansion has been observed: αa = 61·10-6 K-1, αb = 23 · 10-6K-1 and αc = 4.7 · 10-6K-1. This anisotropy may be caused by anisotropic thermal vibrations of heavy atoms as rubidium.
| Original language | English |
|---|---|
| Pages (from-to) | 740-743 |
| Number of pages | 4 |
| Journal | Zeitschrift fur Kristallographie |
| Volume | 215 |
| Issue number | 12 |
| DOIs | |
| State | Published - 1 Dec 2000 |
ID: 47838545