127749-36-4Relevant academic research and scientific papers
Hydrothermal synthesis, structure and magnetism of square-grid cobalt(II)-carboxylate layered compounds with and without pillars
Kumagai, Hitoshi,Oka, Yoshimi,Inoue, Katsuya,Kurmoo, Mohamedally
, p. 3442 - 3446 (2002)
The hydrothermal synthesis, single crystal X-ray structures and magnetic properties of two layered cobalt(II)-carboxylate complexes, ∞2[CoII(H2O)2 (O2CCHCHC6H5)2] (1) and ∞2[CoII(H2O)2 (O2CCHCHC6H4CO2)2/2] (2), are described. Pale red crystals of Co(H2O)2L2, L = trans-cinnamate (C9H7O2-) (1) or L2 = 4-carboxycinnamate (C10H6O42-) (2), were obtained at 120°C. The structures consist of square-grid 2D-coordination polymeric sheets, ... -OCO-Co(H2O)2-OCO-Co(H2O)2- ..., separated by C6H5-CH=CH- for (1) or pillared by -C6H4-CH=CH- for (2). The magnetism was studied as a function of temperature and magnetic field. In both cases the magnetic moment decreases on lowering the temperature due to spin-orbit coupling and no interaction between cobalt ions. The data can alternatively be fitted to an unrealistic quadratic layer model for S = 3/2 without taking into account the effect of spin-orbit.
