A New Bismuth–Selenium Oxychloride, BiSeO3Cl: Crystal Structure and Dielectric and Nonlinear Optical Properties

✍ Scribed by P.S. Berdonosov; S.Yu. Stefanovitch; V.A. Dolgikh

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 243 KB
• Volume: 149
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1006/jssc.1999.8519

✦ Synopsis

A new oxychloride, BiSeO 3 Cl, is obtained at 3003C from a mixture of BiOCl and SeO 2 as large colorless crystals. Roomtemperature single-crystal X-ray investigation combined with an SHG test point to a noncentrosymmetric structure (space group P2 1 2 1 2 1 , a ‫؍‬ 6.353(2), b ‫؍‬ 7.978(3), c ‫؍‬ 8.651(4) A s , Z ‫؍‬ 4, RF ‫؍‬ 5.60%). The structure is characterized by a three-dimensional framework which is built up of BiO 5 Cl 2 pentagonal bipyramids and trigonal pyramids of SeO 3 E (E is the lone electron pair of Se(IV)). The dielectric and optical nonlinear properties of BiSeO 3 Cl are evaluated.

2000 Academic Press

Crystal Structure Determination of BiSeO Cl

A small piece of BiSeO Cl crystal with linear dimensions of about 0.15 mm was used for the detailed structure