Kinetics; thermal decompn. under N2 between 110 and 130°C;

400°C, in O2-flow;

in neat (no solvent, solid phase) multistage annealing of mixt. of Mn and Ni oxalates at 200-700°C in air; X-ray powder diffraction anal.;

<b>With</b>&nbsp; (1-butyl-3-methylimidazolium chloride&nbsp;<b>in</b>&nbsp; solid<br />&nbsp;one-step solid-state react. in ionic liq.; at room temp. to mixt. of Mn acetate (2 mmol) and (BMIM)Cl (2 mmol) solid H2C2O4 (2 mmol) added, grinding (50 min); washed in ultrasonic bath (distd. H2O, abs. EtOH, 3 times resp.); powderXRD;&nbsp;<br /> &nbsp;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '11343348', constants.ctx, '0')">potassium permanganate</a> <br /> <br /> &nbsp;

&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '3587155', constants.ctx, '0')">water</a> <br />&nbsp;addn. of excess of concd. soln. of acid to a soln. of KMnO4; filtration, washing with water, drying at 60&deg;C in air;&nbsp;<br /> &nbsp;