β Scribed by Xiqu Wang; Lumei Liu; Allan J. Jacobson
No coin nor oath required. For personal study only.
A new zinc vanadate Zn 2 (OH)VO 4 has been synthesized by an electrochemical-hydrothermal method and characterized by single crystal X-ray diffraction. The compound crystallizes in the orthorhombic system, space group Pnma, a = 14.645(1) A Γ , b = 6.0215(5) A Γ , c = 8.8757(8) A Γ , V = 782.7(1) A Γ 3 , Z = 4, measured at 223 K. In the structure, rutile-type [ZnO 6 ] octahedral chains are interconnected by [VO 4 ] tetrahedra to form a framework of composition [Zn(OH)VO 4 ], the voids of which are filled by Zn cations with trigonal bipyramidal and octahedral coordination. The structure is closely related to that of the adamite-type phases and the minerals descloizite PbZn(OH)VO 4 and tsumcorite Pb 0.5 Zn(H 2 O)AsO 4 .
π SIMILAR VOLUMES
Synthesis and Crystal Structure of BaZn(OH) 4 β’H 2 O. -Single crystals of the title compound are prepared by reaction of ZnO with Ba(OH) 2 β’8H 2 O in a boiling aq. NaOH solution and subsequent corrosion of a zinc/iron-pair in the barium containing solution of hydroxozincate at room temperature. The