Rez4Si7, first in a new MoSi2-based family of 14-electron phases
(2009) In Chemistry - A European Journal 15(33). p.8108-8112- Abstract
A study was conducted to investigate the geometrical and electronic connections of Re4Si7 to the rich structural chemistry of the Nowotny Chimmney Ladder phases (NCL). Re4Si7 was prepared by arc-melting a pressed pellet of Re and Si in a stoichiometric ratio, sealing the resulting globule in an excavating quartz tube, and annealing the sample in a muffle furnace. It was found that NCLs were intermetallic compounds of composition TE2-X where T was the transition metal and E the main-group element. The NCLs formed defect variants of another transition-metal disilicide structure type similar to TiSi2. These phases also exhibited complex crystal structures resulting from... (More)
A study was conducted to investigate the geometrical and electronic connections of Re4Si7 to the rich structural chemistry of the Nowotny Chimmney Ladder phases (NCL). Re4Si7 was prepared by arc-melting a pressed pellet of Re and Si in a stoichiometric ratio, sealing the resulting globule in an excavating quartz tube, and annealing the sample in a muffle furnace. It was found that NCLs were intermetallic compounds of composition TE2-X where T was the transition metal and E the main-group element. The NCLs formed defect variants of another transition-metal disilicide structure type similar to TiSi2. These phases also exhibited complex crystal structures resulting from relaxations in the E sublattice in response to the missing E atoms in the stoichiometry. This led to the formation of a significant variety of E atom helices whose helical repeat periods changed continuously with variations in x relative to the T atom sublattice.
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- author
- Fredrickson, Daniel C. ; Boström, Magnus ; Grin, Yuri and Lidin, Sven LU
- publishing date
- 2009-08-17
- type
- Contribution to journal
- publication status
- published
- keywords
- Bond theory, Electron loealizabilily indicator, Inlermelallic phases, Solid-state structures, Transition-metal silicides
- in
- Chemistry - A European Journal
- volume
- 15
- issue
- 33
- pages
- 5 pages
- publisher
- Wiley-Blackwell
- external identifiers
-
- scopus:68949091859
- ISSN
- 0947-6539
- DOI
- 10.1002/chem.200900739
- language
- English
- LU publication?
- no
- id
- 54253dff-3851-4a80-9040-d51378daabb6
- date added to LUP
- 2019-04-08 15:02:46
- date last changed
- 2022-04-02 07:46:15
@article{54253dff-3851-4a80-9040-d51378daabb6, abstract = {{<p>A study was conducted to investigate the geometrical and electronic connections of Re<sub>4</sub>Si<sub>7</sub> to the rich structural chemistry of the Nowotny Chimmney Ladder phases (NCL). Re<sub>4</sub>Si<sub>7</sub> was prepared by arc-melting a pressed pellet of Re and Si in a stoichiometric ratio, sealing the resulting globule in an excavating quartz tube, and annealing the sample in a muffle furnace. It was found that NCLs were intermetallic compounds of composition TE<sub>2-X</sub> where T was the transition metal and E the main-group element. The NCLs formed defect variants of another transition-metal disilicide structure type similar to TiSi<sub>2</sub>. These phases also exhibited complex crystal structures resulting from relaxations in the E sublattice in response to the missing E atoms in the stoichiometry. This led to the formation of a significant variety of E atom helices whose helical repeat periods changed continuously with variations in x relative to the T atom sublattice.</p>}}, author = {{Fredrickson, Daniel C. and Boström, Magnus and Grin, Yuri and Lidin, Sven}}, issn = {{0947-6539}}, keywords = {{Bond theory; Electron loealizabilily indicator; Inlermelallic phases; Solid-state structures; Transition-metal silicides}}, language = {{eng}}, month = {{08}}, number = {{33}}, pages = {{8108--8112}}, publisher = {{Wiley-Blackwell}}, series = {{Chemistry - A European Journal}}, title = {{Re<sub>z4</sub>Si<sub>7</sub>, first in a new MoSi<sub>2</sub>-based family of 14-electron phases}}, url = {{http://dx.doi.org/10.1002/chem.200900739}}, doi = {{10.1002/chem.200900739}}, volume = {{15}}, year = {{2009}}, }