Ronald Troutman
Synthetic Metals
Two hydrazine zinc(II) telluride polymorphs, (N2H 4)2ZnTe, have been isolated, using ambient-temperature solution-based techniques, and the crystal structures determined: α-(N2H4)2ZnTe (1) [P21, a = 7.2157(4) Å, b = 11.5439(6) Å, c = 7.3909(4) Å, β = 101.296(1)°, Z = 4] and β-(N2H4)2ZnTe (2) [Pn, a = 8.1301(5) Å, b = 6.9580(5) Å, c = 10.7380(7) Å, β = 91.703(1)°, Z = 4]. The zinc atoms in 1 and 2 are tetrahedrally bonded to two terminal hydrazine molecules and two bridging tellurium atoms, leading to the formation of extended one-dimensional (1-D) zinc telluride chains, with different chain conformations and packings distinguishing the two polymorphs. Thermal decomposition of (N2H4) 2ZnTe first yields crystalline wurtzite (hexagonal) ZnTe at temperatures as low as 200°C, followed by the more stable zinc blende (cubic) form at temperatures above 350°C. The 1-D polymorphs are soluble in hydrazine and can be used as convenient precursors for the low-temperature solution processing of p-type ZnTe semiconducting films. © 2005 American Chemical Society.
Ronald Troutman
Synthetic Metals
Arvind Kumar, Jeffrey J. Welser, et al.
MRS Spring 2000
Ranulfo Allen, John Baglin, et al.
J. Photopolym. Sci. Tech.
A.B. McLean, R.H. Williams
Journal of Physics C: Solid State Physics