English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Tl 2 PbGeS 4  was synthetized by fusion of a stoichiometric mixture of Tl 2 S, PbS, and GeS 2 , and prolonged heating of the reaction product. A single crystal could be isolated for intensity measurements on an automated four-circle single crystal diffractometer. Tl 2 PbGeS 4  is monoclinic, space group P2 1 /a with a = 8.907(2), b= 9.114(2), c = 10.502(3) Å, β = 94.08(2)°, and Z = 4. The crystal structure was determined by means of standard methods and refined to R = 0.065. The structure is composed of tetrahedral [GeS 4 ] 4-  anions which are held together by Tl 1+  and Pb 2+  cations. The GeS 4  tetrahedra are only slightly deformed (mean distance Ge-S: 2.220 Å). The Tl atoms are surrounded by eight S atoms at distances ranging from 3.085 to 4.055 Å forming irregular coordination polyhedra. The Pb atom is coordinated by six S atoms in a strongly distorted octahedral arrangement at distances varying from 2.803 to 3.256 A. The Pb atoms and the Tl(2) atoms are alternately situated between slabs of GeS 4  tetrahedra parallel to the ab plane. The Tl(l) atoms are found within these slabs located between the GeS 4  tetrahedra.

zeitschrift für naturforschung b

Darstellung und Kristallstruktur des Dithallium(I)blei(II)tetrathiogermanats(IV) Tl 2 PbGeS 4  / Preparation and Crystal Structure of Dithallium(I)Lead(II) Tetrathiogermanate (IV)