skip to main content

Title: Crystal structure features in a new compound C{sub 4}B{sub 25}Mg{sub 1.42}

The composition of C{sub 4}B{sub 25}Mg{sub 1.42} crystal obtained by self-propagating high-temperature synthesis was determined using X-ray diffraction. This is the first crystalline structure where all boron atoms in the B{sub 12} icosahedron occupy crystallographically independent positions; this circumstance allowed us to analyze the effect of substituents on bond lengths in the icosahedron. The crystal structure features, including the channels filled with disordered Mg atoms and the spread of B—B endo- and exo-bond lengths in the icosahedra, are described. A crystallochemical analysis of pair bonds has been performed for the first time.
Authors:
;  [1]
  1. Russian Academy of Sciences, Institute of Structural Macrokinetics and Materials Science (Russian Federation)
Publication Date:
OSTI Identifier:
22472155
Resource Type:
Journal Article
Resource Relation:
Journal Name: Crystallography Reports; Journal Volume: 60; Journal Issue: 5; Other Information: Copyright (c) 2015 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ATOMS; BOND LENGTHS; BORON; CHEMICAL BONDS; CRYSTAL STRUCTURE; CRYSTALS; MAGNESIUM BORIDES; MAGNESIUM CARBIDES; SYNTHESIS; TEMPERATURE DEPENDENCE; X-RAY DIFFRACTION