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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The two-dimensional structure determination of [MnMo 9 O 32 ] 6−  (W augh , S hoemaker  and P auling , 1954) could be confirmed. The lattice constants are:  a  = 15.914(8) Å,  c  = 12.401(6) Å (hexagonal cell). Space group:  R 32,  Z  = 3,  D  m  = 3.01 g cm −3 ,  D  x  = 3.015 g cm −3  ( n  = 6H 2 O). About 3200 reflections were measured (814 independent reflections,  R  = 3.5% for 752 observed reflections, anisotropic temperature factors for Mn and Mo). The polyanion exhibits 32 symmetry. All the metal atoms are octahedrally coordinated. The M–M distances are: Mn–Mo 3.172 Å (6 ×) and 3.191 Å (3 ×), Mo–Mo 3.238 Å (Mo–Mo–Mo = 118.2°) and 3.356 Å (Mo–Mo–Mo = 60°). The O atoms are cubic close packed. There are 7, 9, 9 and 7 O atoms per layer. The M–O-distances have a mean value of: Mn–O = 1.90 Å (6 ×), Mo–O = 1.70 Å (unshared O atom, twice per octahedron), 1.97 Å (O bonded to two Mo, 2 ×) and 2.22 Å (O bonded to 3 Mo + Mn, 2 ×). The NH 4  +  ions are situated on the twofold axes. Only six of the eight presumed water molecules could be found. These are distributed statistically among twelf positions.

Strukturverfeinerung von Ammonium-9-molybdomanganat, (NH 4 ) 6 [MnMo 9 O 32 ]: n H 2 O ( n = 6−8)