CALCIUM HEXAFLUOROARSENATES WITH METAL COORDINATED HF MOLECULES
Melita Tramšek*
and Primož Benkič
Jožef Stefan Institute, Jamova 39,
SI-1000 Ljubljana, Slovenia
Abstract
Two calcium hexafluoroarsenates(V) with metal
coordinated HF were structurally characterised: Ca(HF)(AsF6)2
and Ca(HF)6(AsF6)2. Ca(HF)(AsF6)2
crystallizes in a monoclinic crystal system, space group P21/c,
with a =962.4(6) pm, b = 926.4(5) pm and c = 1059.2(7) pm,
b
= 104.161(13)°,
V = 0.9157(10) nm3 and Z = 4. Ca(HF)6(AsF6)2
crystallizes in a monoclinic crystal system, space group P21/c,
with a =1004.9(5) pm, b = 1498.7(7) pm and c = 984.0(5) pm,
b
= 109.56(11)°,
V = 1.3965(12) nm3
and Z = 4.
Key words: calcium, hexafluoroarsenates, hydrogen fluorid