Single crystals and powdered samples of the bismuth(
III) calcium oxide Ca6Bi6O15 have been synthesized
and studied using both X-ray and neutron diffractometry.
The compound crystallizes in the space group P with
Z=2. Cell parameters, obtained with the single-crystal
X-ray diffractometer, were a= 10.101? , b=10.130? ,c=10.466? , andα= 116.86°, β= 107.18? γ= 92.90°.As with other materials in the series M–Bi–O (M= Ca, Sr)
studied thus far, at least some Bi is found in threefold coordination
with oxygen; the remaining Bi are fourfold coordinated.
