G 99 Gyrdasova, O. I. Synthesis of Micro- and Nanosized Manganese Oxides from Hydrated Manganese Oxalates and Products of Their Chemical Modification with Ethylene Glycol / O. I. Gyrdasova, V. N. Krasil'nikov, G. V. Bazuev // Russian Journal of Inorganic Chemistry. - 2009. - Vol. 54, № 7. - P1035-1040 : il. - Bibliogr. : p. 1040 (9 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ОКСИД МАРГАНЦА -- ОКСАЛАТЫ -- ЭТИЛЕНГЛИКОЛЬ Аннотация: The reactions of ethylene glycol with manganese oxalates MnC2O4·2H2O and MnC2O4·3H2O on heating in air were studied. At temperature below 100°C, ethylene glycol was found to displace water from oxalates to give a new solvate compound according to the reaction MnC2O4·nH2O+HOCH2CH2OH=MnC2O4(HOCH2CH2OH) +nH2O↑. The crystals of the solvates retain the morphology of the initial oxalates, which is then inherited by the products of their thermolysis. Thus, thermolysis of MnC2O4·3H2O and MnC2O4(HOCH2CH2OH) having quasi-unidimensional structure gave Mn3O4 and Mn2O3nanowhiskers in air and MnO in an inert gas environment. Heating of MnC2O4·nH2O in ethylene glycol at temperatures above 100°C results in anhydrous manganese oxalate Полный текст |