Инд. авторы:	Gavryushkin P.N., Bakakin V.V., Bolotina N.B., Shatskiy A.F., Seryotkin Y.V., Litasov K.D.
Заглавие:	Synthesis and Crystal Structure of New Carbonate Ca3Na2(CO3)(4) Homeotypic with Orthoborates M(3)Ln(2)(BO3)(4) (M = Ca, Sr, and Ba)
Библ. ссылка:	Gavryushkin P.N., Bakakin V.V., Bolotina N.B., Shatskiy A.F., Seryotkin Y.V., Litasov K.D. Synthesis and Crystal Structure of New Carbonate Ca3Na2(CO3)(4) Homeotypic with Orthoborates M(3)Ln(2)(BO3)(4) (M = Ca, Sr, and Ba) // Crystal Growth & Design. - 2014. - Vol.14. - Iss. 9. - P.4610-4616. - ISSN 1528-7483. - EISSN 1528-7505.
Внешние системы:	DOI: 10.1021/cg500718y; SCOPUS: 2-s2.0-84906874677; WoS: 000341226500045;
Реферат:	eng: Single crystals of the new double alkali carbonate Ca3Na2(CO3)(4) were synthesized using a high-pressure large volume apparatus at 6 GPa by slow cooling of the stoichiometric carbonate mixture from 1400 to 1150 C for 2.5 h. The structure was solved and refined to R = 0.044 using 7489 independent reflections: P1n1, Z = 8, a = 31.4421(8) angstrom, b = 8.1960(2)angstrom, c = 7.4360(2) angstrom, and beta = 89.923(2)degrees. The structure is characterized by the maximal number of nonparallel sets of CO3 groups among carbonates. The compound is homeotypic with the orthoborates M(3)Ln(2)(BO3)(4) (where M = Ca, Sr, Ba and Ln = Er, Sm, Nd, Pr, La, Y, Gd, Eu, Dy, Ho, and Bi). No homeotypic analogs have been found among carbonates. The structure is described as a packing of two-capped trigonal prisms formed by Na+ and Ca2+ cations and centered by CO3 triangles.
Ключевые слова:	KIMBERLITE; CRYSTALLOGRAPHY; SHORTITE; ONTARIO; MANTLE; CELL; CANADA-GOLD-MINE; 6 GPA;
Издано:	2014
Физ. характеристика:	с.4610-4616