Cuprate manganites of the composition LaM 2 II CuMnO6 (MII = Mg, Ca, Sr, Ba) were synthesized from lanthanum, copper(II), and manganese(III) oxides and alkaline-earth metal carbonates by high-temperature solid-phase synthesis. By grinding the produced substances in a ball mill, their nanostructured particles were obtained, the sizes of which were determined with an electron microscope. Indexing the X-ray powder diffraction patterns of the cuprate manganites established that all of them crystallize in the cubic system with the following unit cell parameters: LaMg2CuMnO6: a = 15.523 ± 0.033 Å, Z = 6, V 0 = 3740.48 ± 0.10 Å3, V el.cell 0 = 623.41 ± 0.03Å3, ρX-ray = 5.81 g/cm3, and ρpycn = 5.75 ± 0.06 g/cm3; LaCa2CuMnO6: a = 15.422 ± 0.058 Å, Z = 4, V 0 = 3667.94 ± 0.174 Å3, V el.cell 0 = 916.48 ± 0.04 Å3, ρX-ray = 3.77 g/cm3, and ρpycn = 3.72 ± 0.05 g/cm3; LaSr2CuMnO6: a = 15.275 ± 0.049 Å, Z = 4, V 0 = 3564.05 ± 0.27 Å3, V el.cell 0 = 891.01 ± 0.07 Å3, ρX-ray = 4.31 g/cm3, and ρpycn = 4.25 ± 0.05 g/cm3; and LaBa2CuMnO6: a = 15.589 ± 0.029 Å, Z = 4, V 0 = 3788.39 ± 0.09 Å3, V el.cell 0 = 947.10 ± 0.02 Å3, ρX-ray = 4.74 g/cm3, and ρpycn = 4.70 ± 0.05 g/cm3. The data of an IR spectroscopic study of the cuprate manganites were presented.

Heat capacities of nanostructured NdCa2CuMnO6 cuprate-manganite are measured by means of dynamic calorimetry on an IT-C-400 unit in the temperature interval of 298.15–673 K. It is established that a λ-shaped phase transition of the second kind is revealed at 348 K on the curve of the dependence C° p ∼ f(T) of NdCa2CuMnO6. Equations for the temperature dependence of the heat capacity of NdCa2CuMnO6 cuprate-manganite are derived from experimental data including the temperature of phase transition. Thermodynamic functions H°(T)-H°(298.15), S°(T), and Φ**(T) are calculated in the interval of 298.15–675 K.

The chemical analysis of coal from the Kushmurun deposit in Kazakhstan and its ash was performed. Data on the X-ray diffraction and thermal analysis of the coal ash are given. The chemical activity of the coal was determined. The specific heat capacity of the coal was studied by dynamic calorimetry, and its heat of combustion was calculated.