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Ba3SiI2, a Double Salt of Barium Iodide and the Zintl Phase Ba2Si

โœ Scribed by Steffen Wengert; Reinhard Nesper

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
215 KB
Volume
152
Category
Article
ISSN
0022-4596

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โœฆ Synopsis

Reacting Ba 2 X (X โ€ซุโ€ฌ Si, Ge) with a melt of BaI 2 , new compounds of the composition Ba 3 I 2 X were found. These are the simplest representatives of double salts between Zintl phases and halides. The isotypic structures were re5ned by single-crystal X-ray data (Fddd, a โ€ซุโ€ฌ 10.057(2), b โ€ซุโ€ฌ 14.064(3), c โ€ซุโ€ฌ 29.526(4) A s , R/R w โ€ซุโ€ฌ 0.04/0.07 for X โ€ซุโ€ฌ Si, and a โ€ซุโ€ฌ 10.064(2), b โ€ซุโ€ฌ 14.082(2), c โ€ซุโ€ฌ 29.605(4) A s , R/R w โ€ซุโ€ฌ 0.03/0.07 for X โ€ซุโ€ฌ Ge). Magnetic measurements show Ba 3 I 2 Si to be diamagnetic with a mol susceptibility of 7.7ุ‹10 ุŠ5 cm 3 /mol. This is in accordance with conductivity measurements and LMTO band structure calculations which show a semiconducting behavior with an electronic band gap of about 0.4 eV.

๐Ÿ“œ SIMILAR VOLUMES

Ba4Si3Br2: A Double Salt of Barium Bromi
Ba4Si3Br2: A Double Salt of Barium Bromide and Barium Silicide Containing a Novel Cyclotrisilicide Unit
โœ Steffen Wengert; Johannes B. Willems; Reinhard Nesper ๐Ÿ“‚ Article ๐Ÿ“… 2001 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 134 KB ๐Ÿ‘ 1 views

A new compound of the composition Ba 4 Si 3 Br 2 was obtained by reacting BaSi with a melt of BaBr 2 . Ba 4 Si 3 Br 2 may be described as a double salt between a Zintl phase and a halide. The structure was determined by singlecrystal X-ray diffraction (P2 1 c, a 1504.1(2), b 884.5(1), c 880.2(1) pm,