Thermal stability of HoMnO<Subscript>3</Subscript>

The low-oxygen limit of the homogeneity range of HoMnO₃, which dissociates according to the reaction HoMnO₃ = 1/2Ho₂O₃ + MnO + 1/4O₂ in the temperature range 987–1160 K, was established by the static method. The temperature dependences of the equilibrium oxygen pressure, the change in the Gibbs free energy, and the thermodynamic functions of HoMnO₃ formation from elements were derived from the experimental data.     

MOLECULAR STRUCTURES AND CRYSTAL PACKINGS OF STYRYLDIAZINES

Journal of Structural Chemistry - Crystal structures of three isomeric styryldiazine derivatives (E)-2-(3,4-dimetoxystryl)pyrazine, (E)-2-(3,4-dimetoxystryl)pyrimidine, and...     

Problems of solubility of hydrolysis lignin

Interaction of hydrolysis lignin with polyacrylonitrile in water-dimethyl sulfoxide solution in the presence of an activator was studied, and the properties of the products were examined.     

Half-sandwich complexes of lanthanides with tridentate ligands [RCH2CH(O)CH2OBun]2– (R = C5H4, 1-C9H6): synthesis,structures, and properties. The crystal structure of the complex {[(η5-C5H4)CH2CH(μ2:η1-O)CH2OBun]LaN(SiMe3)2}2

The oxirane-ring opening of butyl glycidyl ether with cyclopentadienylsodium or indenylsodium afforded cyclopentadienyl- and indenyl-substituted alcohols RHCH₂CH(OH)CH₂OBuⁿ (R = C₅H₄ (1) or 3-C₉H₆ (2), respectively), which were used as tridentate ligands. The reactions of these compounds with Ln[N(SiMe₃)₂]₃ produced the lanthanide complexes {[(⁵-R)CH₂CH(²:¹-O)CH₂OBuⁿ]LnN(SiMe₃)₂}₂ (R = C₅H₄, Ln = La (3), Pr (4), Er (5), Lu (6); or R = 1-C₉H₆, Ln = La (7)). The coordination spheres of the metal atoms in these complexes involve simultaneously the ⁵-cyclopentadienyl (indenyl), bridging alkoxide, and terminal amide ligands. The complexes were characterized by microanalysis, IR and NMR spectroscopy, and magnetochemistry. The crystal and molecular structure of complex 3 was established by single-crystal X-ray diffraction analysis.