Synthesis and Crystal Structure of New Carbonate Ca3Na2(CO3)4 Homeotypic with Orthoborates M3Ln2(BO3)4 (M = Ca, Sr, and Ba)

被引：23

作者：

Gavryushkin, Pavel N. ^{[1
,2
]}

Bakakin, Vladimir V. ^{[3
]}

Bolotina, Nadezhda B. ^{[4
]}

Shatskiy, Anton F. ^{[1
,2
]}

Seryotkin, Yurii V. ^{[1
,2
]}

Litasov, Konstantin D. ^{[1
,2
]}

机构：

[1] Russian Acad Sci, Siberian Branch, VS Sobolev Inst Geol & Mineral, Novosibirsk 630090, Russia

[2] Novosibirsk State Univ, Novosibirsk 630090, Russia

[3] Russian Acad Sci, Siberian Branch, Nikolaev Inst Inorgan Chem, Novosibirsk 630090, Russia

[4] Shubnikov Inst Crystallog RAS, Moscow 119333, Russia

来源：

CRYSTAL GROWTH & DESIGN | 2014年 / 14卷 / 09期

基金：

俄罗斯基础研究基金会;

关键词：

CANADA-GOLD-MINE; 6; GPA; KIMBERLITE; SHORTITE; CELL;

D O I：

10.1021/cg500718y

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：4610 / 4616

页数：7

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