
TY  - JOUR
A1  - Figgis, BN 
A1  - Reynolds, PA 
T1  - The crystal structure of tricaesium tetrabromocobaltate(II) bromide, Cs<sub>3</sub>CoBr<sub>5</sub>, at 4.2 K by neutron diffraction
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1981
VL  - 34
IS  - 12
SP  - 2495
EP  - 2498
KW  - 
UR  - https://doi.org/10.1071/CH9812495 
N2  - The crystal structure of Cs3CoBr5 [I4/mcm, a 946(1), c 1504(2) pm, U 1.346(7) nm3, Z 4] has been determined at 4.2 K by single-crystal neutron diffraction methods. The Co-Br bond length is 239.8(2) pm, and the Br-Co-Br angles of the distorted tetrahedral cobalt environment are 107.58(9) and 110.43(9)º. The neutron scattering lengths of cobalt and bromine were found, by least-squares refinement, to be 2.46(2) &#215; 10-15 and 6.78(2) &#215; 10-15 m respectively, relative to a caesium scattering length of 5.38 &#215; 10-l5 m. The contact distances and thermal parameters of Cs3CoBr5, when compared with those from Cs3CoCl5, provide further evidence on the stability of M3CoX5 salts. The metal ion must be sufficiently large to adequately fill the large holes in the lattice whose size is determined by X-...X- contacts. 
ER  -

