caa a22 4500 378882317 CHVBK 20180305123434.0 cr unu---uuuuu 161128e20031101xx s 000 0 eng 10.1524/zkri.218.11.740.20305 doi (NATIONALLICENCE)gruyter-10.1524/zkri.218.11.740.20305 Compositional and structural variations in the ternary system Li - Al - Si [Elektronische Daten] [Laurent Spina, Yong Zhong Jia, Bernard Ducourant, Monique Tillard, Claude Belin] The Li-Al-Si ternary system has been investigated and four ternary phases characterized using both powder and single crystal X-ray diffraction data. LiAlSi and Li7Al3Si4 crystallize in the F4̅3m, cubic system, Li18Al2Si6 in tetragonal I41/amd and Li15Al3Si6 in hexagonal P63/m space group. The structure of LiAlSi (a = 5.94 Å), previously reported from powder data, has been confirmed. The new compound Li7Al3Si4 has been identified and, due to a higher lithium content, its cell parameter is slightly larger (a = 6.115 Å). The tetragonal cell (a = 6.179(1) Å, c = 12.199(4) Å) of Li18Al2Si6 may be considered as a (1 × 1 × 2) supercell of the cubic one. Structural variations are strongly correlated to compositional fluctuations and atomic substitutions, in every case the SI-Al network displays some covalent character. In the Li15Al3Si6 hexagonal cell, bonding is more covalent leading to a heterographite-like SI-Al network. © 2003 Oldenbourg Wissenschaftsverlag GmbH Crystallography nationallicence Inorganic chemistry nationallicence Organic chemistry nationallicence Spina Laurent aut Jia Yong Zhong aut Ducourant Bernard aut Tillard Monique aut Belin Claude aut Zeitschrift für Kristallographie - Crystalline Materials De Gruyter Oldenbourg 218/11(2003-11-01), 740-746 2194-4946 218:11<740 2003 218 zkri https://doi.org/10.1524/zkri.218.11.740.20305 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1524/zkri.218.11.740.20305 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Spina Laurent aut NATIONALLICENCE 700 1- Jia Yong Zhong aut NATIONALLICENCE 700 1- Ducourant Bernard aut NATIONALLICENCE 700 1- Tillard Monique aut NATIONALLICENCE 700 1- Belin Claude aut NATIONALLICENCE 773 0- Zeitschrift für Kristallographie - Crystalline Materials De Gruyter Oldenbourg 218/11(2003-11-01), 740-746 2194-4946 218:11<740 2003 218 zkri CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter