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

The hydrogen bonding in the structure of the lead uranyl-oxide mineral sayrite has been refined and described directly from XRD data for the first time. Sayrite is monoclinic,  a  = 10.6925(4),  b  = 6.9593(2),  c  = 13.6035(5) Å, β = 107.680(3), with  V  = 964.46(6) Å 3 , and  Z  = 2, space group  P  2 1 / n . The structure has been refined to an  R  = 2.34% based on 2252 unique [ I  &gt; 3σ I ] reflections. Sayrite possesses a layered structure with the uranyl-hydroxo-oxide sheets of the topology characterized by the topology symbol P 4 (UD) 8 R 5 . Between adjacent sheets, there are Pb 2+  cations and molecular H 2 O. All H 2 O groups in sayrite belong to non-transformer groups, which distribute bond-valence from equally from all the cationic parts of the structure to anions. The structural formula of sayrite is Pb 2 (H 2  [4] O) 4 [(UO 2 ) 5 O 6 (OH) 2 ].

Hydrogen bonding in lead uranyl oxide mineral sayrite