
TY  - JOUR
A1  - Taylor, D 
T1  - The crystal structures of the Hexakis(pyridine 1-oxide) complexes of copper(II), cobalt(II) and iron(II) perchlorates
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1978
VL  - 31
IS  - 4
SP  - 713
EP  - 721
KW  - 
UR  - https://doi.org/10.1071/CH9780713 
N2  - The crystal structures of the isomorphous complexes [M(pyridine 1-oxide)6] (ClO4)2 M = Cu (1), Co (2) and Fe (3), have been determined from X-ray diffractometer data collected at 293 K. The complexes crystallize in the rhombohedral space group R3 with Z = 1; cell constants for (1): a 9.605(1)&#506;, &#945; 81.10(1)&#176;; for (2): a 9.619(1)&#506;, &#945; 81.19(1)&#176;; for (3): a 9.640(1)&#506;, &#945; 81.06(1)&#176;. The structures were solved by Fourier techniques and refined by block-diagonal least squares to convergence at R, R': (1) 0.037, 0.039 for 1009 reflections; (2) 0.030, 0.038 for 812 reflections; (3) 0.032, 0.041 for 780 reflections with I &#8805; 3&#963;(I). The cations have exact S6 symmetry with the MO6 moiety having almost exact Oh symmetry, which implies for (1) a lack of a static Jahn-Teller distortion. The M-O distances increase (1) 2.076(2), (2) 2.090(1), (3) 2.112(2)&#506; in the order expected. The geometries of the pyridine 1-oxide ligand and the perchlorate ion are consistent over the three determinations and are normal. 
ER  -

