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 Tools annual

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 monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

The new polyoxotungstates Cs 6n K 2n [{(Pr(H 2 O) 7 )(Pr(H 2 O) 2 )(α-SiW 11 O 39 )} 4 ] n  ・ 33nH 2 O (1), (NH 4 ) 14 [{Tb(H 2 O) 3 (α 2 -P 2 W 17 O 61 )} 2 ] ・ 39H 2 O (2) and (NH 4 ) 7.33 K 2.67 Ho 1.33 [{Ho(H 2 O) 3 (α 2 - P 2 W 17 O 61 )} 2 ] ・45H 2 O (3) were synthesized in aqueous solution and characterized by IR and Raman spectroscopy,  31 P NMR spectroscopy (for 2 and 3), energy dispersive X-ray fluorescence analysis and single-crystal X-ray analysis. 1 exhibits a novel one-dimensional chain-like structure which is built up from of monovacant (α-SiW 11 O 39 ) 8 − Keggin-type anions linked by Pr(III) atoms. Half of the Pr(III) atoms are eight-coordinate (square antiprism), with four sites occupied by one anion, three by water molecules, and the eighth site by a terminal oxygen atom of a second anion. The other Pr(III) atoms are coordinated by seven water molecules and two terminal oxygen atoms of two Keggin moieties. The dimeric [{Ln(H 2 O) 3 (α 2 -P 2 W 17 O 61 )} 2 ] 14−  anions in 2 (Ln = Tb) and 3 (Ln = Ho) consist of two (α 2 -P 2 W 17 O 61 ) 10−  Dawson-type anions linked by two trivalent lanthanides. The lanthanides exhibit a square-antiprismatic coordination sphere which is built up by three water molecules, four terminal oxygen atoms of one Dawson-anion and one oxygen atom of the second Dawson-anion. The crystal structures of the new compounds are compared with known species and the influence of the Ln(III) ionic radii is discussed

zeitschrift für naturforschung b

Lanthanoidhaltige Komplexe monovakanter Keggin- und Dawson-Polyoxoanionen / Novel Lanthanide Complexes of Monovacant Keggin- and Dawson-Type Polyoxoanions