Metal-metal-bonded scandium cluster (Sc/sub 7/Cl/sub 12/Z) and infinite chain (Sc/sub 4/Cl/sub 6/Z) phases stabilized by interstitial boron or nitrogen (Z)
Journal Article
·
· J. Solid State Chem.; (United States)
The title phases have been obtained in high yields from reactions of metal, trichloride, and elemental boron or nitrogen in sealed niobium tubing at 850-950/sup 0/C. Single crystal structural studies on samples of all four phases obtained by autogenous vapor phase transport reactions are reported. The Sc/sub 7/Cl/sub 12/Z compounds contained discrete Sc/sub 6/Cl/sub 12/Z clusters together with isolated scandium(III) atoms while Sc/sub 4/ Cl/sub 12/Z consists of infinite chains of the condensed clusters sharing trans Sc-Sc edges, comparable to those found in Sc/sub 5/Cl/sub 8/Z and, especially, the closely related NaMo/sub 4/O/sub 6/. The scandium-scandium bond lengths in these reflect both the electron count and the effective interstitial size. Extended-Hueckel molecular orbital calculations for both borides demonstrate the prime importance of strong Sc-Z bonding. The chain phases are predicted to be metallic.
- Research Organization:
- Iowa State Univ., Ames
- DOE Contract Number:
- W-7405-ENG-82
- OSTI ID:
- 7008286
- Journal Information:
- J. Solid State Chem.; (United States), Journal Name: J. Solid State Chem.; (United States) Vol. 64:3; ISSN JSSCB
- Country of Publication:
- United States
- Language:
- English
Similar Records
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Conference
·
Thu Mar 14 23:00:00 EST 1985
· J. Solid State Chem.; (United States)
·
OSTI ID:5495640
Synthesis and characterization of reduced scandium halide containing one- and two-dimensional metal bonded arrays. [Sc--ScCl3; Cs3Sc2Cl9; CsScCl3]
Technical Report
·
Tue Aug 01 00:00:00 EDT 1978
·
OSTI ID:6896963
Synthesis and characterization of new reduced scandium chlorides stabilized by interstitial atoms
Technical Report
·
Tue Oct 01 00:00:00 EDT 1985
·
OSTI ID:5104307
Related Subjects
36 MATERIALS SCIENCE
360201 -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
BORIDES
BORON
BORON COMPOUNDS
CHEMICAL PREPARATION
CHLORIDES
CHLORINE COMPOUNDS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
CRYSTALLIZATION
DATA
ELEMENTS
EXPERIMENTAL DATA
HALIDES
HALOGEN COMPOUNDS
INFORMATION
INTERSTITIALS
LATTICE PARAMETERS
NITRIDES
NITROGEN
NITROGEN COMPOUNDS
NONMETALS
NUMERICAL DATA
PHASE TRANSFORMATIONS
PNICTIDES
POINT DEFECTS
SCANDIUM CHLORIDES
SCANDIUM COMPOUNDS
SEMIMETALS
SPACE GROUPS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
360201 -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
BORIDES
BORON
BORON COMPOUNDS
CHEMICAL PREPARATION
CHLORIDES
CHLORINE COMPOUNDS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
CRYSTALLIZATION
DATA
ELEMENTS
EXPERIMENTAL DATA
HALIDES
HALOGEN COMPOUNDS
INFORMATION
INTERSTITIALS
LATTICE PARAMETERS
NITRIDES
NITROGEN
NITROGEN COMPOUNDS
NONMETALS
NUMERICAL DATA
PHASE TRANSFORMATIONS
PNICTIDES
POINT DEFECTS
SCANDIUM CHLORIDES
SCANDIUM COMPOUNDS
SEMIMETALS
SPACE GROUPS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS