Published November 2003 | Version v1
Journal article Metadata-only

Calculation of the enthalpies of formation of some complex oxides in the La-Sr-Ni-O and R-Sr-Mn-O systems (R=La, Pr, Nd) with K2NiF4 and Sr2CuO3 type structure

Creators

  • 1. Moskovskij Gosudarstvennyj Univ. im. M.V. Lomonosova, Moscow (Russian Federation)

Description

The enthalpies of formation from simple ones for 13 complex oxides were calculated for the La-Sr-Ni-O system with K3NiF4 and Sr2CuO3 type structures and the manganites R0.5Sr0.5MnO4 (R=La, Pr, Nd) using approximate methods and taking into account the enthalpies of change in coordination cation and tolerance factors. The thermochemical calculations do not contradict the structural interpretation of the existence of univalent nickel in partially reduced nickelates

Abstract (Russian)

Приближенными методами расчета с учетом энтальпий изменения координационного числа катионов и факторов толерантности вычислены энтальпии образования 13 сложных оксидов из простых в системах La-Sr-Ni-O со структурами типа K3NiF4 и Sr2CuO3 и манганитов R0.5Sr0.5MnO4 (R=La, Pr, Nd). Термохимические расчеты не противоречат структурной интерпретации наличия одновалентного никеля в частично восстановленных никелатах

Additional details

Additional titles

Original title (Russian)
Расчет энтальпий образования некоторых сложных оксидов в системах Ла-Ср-Ни-О и Р-Ср-Мн-О (Р=Ла, Пр, Нд) со структурамитипа К

Publishing Information

Journal Title
Zhurnal Neorganicheskoj Khimii
Journal Volume
48
Journal Issue
11
Journal Page Range
p. 1821-1823
ISSN
0044-457X
CODEN
ZNOKAQ

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
36089445
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
CALCULATION METHODS; CHEMICAL COMPOSITION; COORDINATION NUMBER; CRYSTAL STRUCTURE; FORMATION HEAT; LANTHANUM OXIDES; MANGANESE OXIDES; NEODYMIUM OXIDES; NICKEL OXIDES; PRASEODYMIUM OXIDES; STRONTIUM OXIDES
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; ENTHALPY; LANTHANUM COMPOUNDS; MANGANESE COMPOUNDS; NEODYMIUM COMPOUNDS; NICKEL COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; PRASEODYMIUM COMPOUNDS; RARE EARTH COMPOUNDS; REACTION HEAT; STRONTIUM COMPOUNDS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS

Optional Information

Notes
6 refs., 2 tabs.