CRYSTAL-STRUCTURE OF TETRAGONAL BORON

被引：22

作者：

VLASSE, M

NASLAIN, R

KASPER, JS

PLOOG, K

机构：

[1] GE,CTR RES & DEV,SCHENECTADY,NY 12301

[2] MAX PLANCK INST FESTKORPERFORSCH,D-7000 STUTTGART 80,FED REP GER

来源：

JOURNAL OF THE LESS-COMMON METALS | 1979年 / 67卷 / 01期

关键词：

D O I：

10.1016/0022-5088(79)90067-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Single crystals of tetragonal boron were obtained from boron deposits prepared by hydrogen reduction of BBr3 on tantalum filaments at 1200 °C. Chemical analysis of the samples showed that this phase can be regarded as a true modification of pure elemental boron. The lattice parameters are a = 10.14(1) A ̊ and c = 14.17(1) A ̊. The unit cell contains four chemical units B21·2B12·B2.5, resulting in dc = 2.343 g cm-3 (dm = 2.360(3) g cm-3). The space group is P41 or P43. The structure of this form of boron consists of a three-dimensional boron skeleton built on simple octahedra B12 and twinned icosahedra B21. A number of interstitial sites are totally or partially filled by boron atoms. © 1979.

引用

页码：1 / 6

页数：6

共 10 条

[1] FORMATION OF LATTICES OF PURE BORON [J].

AMBERGER, E ;

PLOOG, K .

JOURNAL OF THE LESS-COMMON METALS, 1971, 23 (01) :21-&

[2]

BOIRET M, 1969, THESIS U BORDEAUX

[3] CRYSTAL-STRUCTURE OF ALPHA-ALB-12 [J].

HIGASHI, I ;

SAKURAI, T ;

ATODA, T .

JOURNAL OF SOLID STATE CHEMISTRY, 1977, 20 (01) :67-77

[4] THE STRUCTURE OF TETRAGONAL BORON [J].

HOARD, JL ;

HUGHES, RE ;

SANDS, DE .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1958, 80 (17) :4507-4515

[5]

HOARD JL, 1967, CHEM BORON ITS COMPO, P25

[6] ALPHA-AIB12 STRUCTURE [J].

KASPER, JS ;

VLASSE, M ;

NASLAIN, R .

JOURNAL OF SOLID STATE CHEMISTRY, 1977, 20 (03) :281-285

[7] Boron. I. Preparation and properties of pure crystalline boron [J].

Laubengayer, AW ;

Hurd, DT ;

Newkirk, AE ;

Hoard, JL .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1943, 65 :1924-1931

[8]

Naslain R., 1977, Boron and refractory borides, P139

[9] CRYSTAL-CHEMISTRY OF SOME BORON-RICH PHASES [J].

NASLAIN, R ;

GUETTE, A ;

HAGENMULLER, P .

JOURNAL OF THE LESS-COMMON METALS, 1976, 47 (JUN) :1-16

[10] A NEW POLYMORPH OF BORON [J].

TALLEY, CP .

ACTA CRYSTALLOGRAPHICA, 1960, 13 (03) :271-272

← 1 →