HCOOH; H2O in water neutralization of aq. soln. of NiCO3 with aq. soln. of formic acid; slow precipitation upon addn. of ethanol and stirring at room temp.;
参考文献
Devillers, M.; Ladriere, J.
Journal of Solid State Chemistry, 1993 , vol. 103, p. 193 - 207