KCuZnTe 2, a quaternary layered metal telluride, was synthesized from a potassium polytelluride flux at 450°C. Single crystal X-ray diffraction analysis showed that the structure of this compound belongs to tetragonal crystal system, space group I4/mmm (no. 139). The unit cell parameters are: a = 4.269(1) Å, c = 14.912(2) Å, V = 271.76(10) Å 3, Z = 2. Direct synthesis at 650°C produced a yield of approximately 25%. KCuZnTe 2 is one of only a few quaternary mixed-metal tellurides having the ThCr 2Si 2-type structure. It is composed of (CuZnTe 2) - layers and K + cations located between the layers. Cu and Zn form a mixed-metal square lattice within each layer by sharing the same crystallographic site. KCuZnTe 2 is electron precise and is therefore most likely a semiconducting material.
A QUATERNARY ThCr2Si2 TYPE STRUCTURE: CRYSTAL GROWTH OF KCuZnTe2 FROM MOLTEN SALT / H.R. Heulings IV, J. Li, D.Μ. Proserpio. - In: MAIN GROUP METAL CHEMISTRY. - ISSN 0792-1241. - 21:4(1998), pp. 225-230. [10.1515/MGMC.1998.21.4.225]
A QUATERNARY ThCr2Si2 TYPE STRUCTURE: CRYSTAL GROWTH OF KCuZnTe2 FROM MOLTEN SALT
D.Μ. ProserpioUltimo
1998
Abstract
KCuZnTe 2, a quaternary layered metal telluride, was synthesized from a potassium polytelluride flux at 450°C. Single crystal X-ray diffraction analysis showed that the structure of this compound belongs to tetragonal crystal system, space group I4/mmm (no. 139). The unit cell parameters are: a = 4.269(1) Å, c = 14.912(2) Å, V = 271.76(10) Å 3, Z = 2. Direct synthesis at 650°C produced a yield of approximately 25%. KCuZnTe 2 is one of only a few quaternary mixed-metal tellurides having the ThCr 2Si 2-type structure. It is composed of (CuZnTe 2) - layers and K + cations located between the layers. Cu and Zn form a mixed-metal square lattice within each layer by sharing the same crystallographic site. KCuZnTe 2 is electron precise and is therefore most likely a semiconducting material.Pubblicazioni consigliate
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