Published November 1997 | Version v1
Journal article Metadata-only

Synthesis and structure of Ca8CeMg(PO4)6SiO4

Creators

  • 1. Moskovskij Gosudarstvennyj Univ. im. M.V. Lomonosova, Moscow (Russian Federation)
  • 2. Inst. Fiziki Tverdogo Tela, Chernogolovka (Russian Federation)

Description

A new compound, that is, Ca8CeMg(PO4)6SiO4 was synthesized. Ca8CeMg(PO4)6SiO4 structure was determined by means of Ritweld method (sp. gr. R3c, Z = 6, a = 10.4916(2), c = 37.531(1) A, V = 3577(1) A3, RWP = 6.03, RP = 450, RI = 3.44, RF = 1.88, RE = 2.86). The compound is isostructural to β-Ca3(PO4)2 and to witlokeet mineral. Calcium and cerium cations populate jointly three positions within the structure, while cerium and magnesium cations populate jointly one position

Abstract (Russian)

Синтезировано новое соединение Ca8CeMg(PO4)6SiO4. Структура Ca8CeMg(PO4)6SiO4 определена методом Ритвельда (пр. гр. R3c, Z = 6, a 10.4916(2), c = 37.531(1) A, V = 3577(1) A3, RWP = 6.03, RP = 450, RI 3.44, RF = 1.88, RE = 2.86). Соединение изоструктурно β-Ca3(PO4)2 и минералу витлокиту. Катионы кальция и церия совместно заселяют три позиции в структуре, катионы церия и магния совместно заселяют одну позицию

Additional details

Additional titles

Original title (Russian)
Синтез и структура Cа

Publishing Information

Journal Title
Kristallografiya
Journal Volume
42
Journal Issue
6
Journal Page Range
p. 1027-1033
ISSN
0023-4761
CODEN
KRISAJ

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
31064893
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
BOND LENGTHS; CALCIUM SILICATES; CERIUM SILICATES; CHEMICAL COMPOSITION; CHEMICAL PREPARATION; INTERATOMIC DISTANCES; LATTICE PARAMETERS; MAGNESIUM PHOSPHATES; SPACE GROUPS; TRIGONAL LATTICES
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; CALCIUM COMPOUNDS; CERIUM COMPOUNDS; CRYSTAL LATTICES; CRYSTAL STRUCTURE; DIMENSIONS; DISTANCE; LENGTH; MAGNESIUM COMPOUNDS; OXYGEN COMPOUNDS; PHOSPHATES; PHOSPHORUS COMPOUNDS; RARE EARTH COMPOUNDS; SILICATES; SILICON COMPOUNDS; SYMMETRY GROUPS; SYNTHESIS

Optional Information

Notes
19 refs., 3 figs., 3 tabs.