Open AccessA square two‐dimensional polymer of cobalt citrate cubanes
Author(s) -
Falvello Larry R.,
ForcénVázquez Elena,
Mayoral Isabel,
Tomás Milagros,
Palacio Fernando
Publication year - 2011
Publication title -
acta crystallographica section c
Language(s) - English
Resource type - Journals
eISSN - 1600-5759
pISSN - 0108-2701
DOI - 10.1107/s0108270111043587
Subject(s) - square (algebra) , cobalt , chemistry , mathematics , geology , inorganic chemistry , geometry
The structure of the title complex, poly[dicaesium(I) hexaaquacobalt(II) [octaaquatetra‐μ‐citrato‐hexacobalt(II)] dodecahydrate], {Cs 2 [Co(H 2 O) 6 ][Co 6 (C 6 H 4 O 7 ) 4 (H 2 O) 8 ]·12H 2 O} n , at 100 (1) K is formed by layers of a square two‐dimensional polymer composed of Co II citrate cubanes bridged by magnetically active six‐coordinate Co II cations. The polymer has plane symmetry p 4 mm in the c ‐axis projection. The cubanes reside on sites of crystallographic symmetry , while the bridging Co II centres lie on twofold axes. The basic polymeric unit has a charge of 4−, balanced by two Cs + and a [Co(H 2 O) 6 ] 2+ (symmetry ) cation, which lie in channels between the polymeric layers. Unligated water molecules, of which there are 12 per cubane, enter into an extended intralayer and layer‐bridging hydrogen‐bond pattern, which can be described in detail even though not all of the H atoms of the water molecules were located.