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

A new 1:1 complex between Ortho-Ester Tetra-Azophenylcalix[4]arene (TEAC) and Thorium(IV) was found in weakly acidic medium (pH =4-5), ?max = 520 nm, Beer’s law was obeyed in the range 2.5 ×10-6 – 2.5×10-5 mol.L-1 of Th(IV), the limit of detection was 1.0 × 10? 6 mol.L-1 and linear regression equation was determined to be: absorbance (A) = 0,248×C(10-5 mol.L-1) + 0,02 (R2 = 0,990, n =7). The FT-IR, HNMR, Raman spectroscopies were also used to provide the existence of this complex, and the Molecular Mechanics (MM) method in Arguslab software was applied to optimize the structure. The energy of the system, QEq charge, bond lengths and bond angles were also calculated by this program. Combining all data, the structure of complex TEAC - Th(IV) has been proposed.</p

Structural Study on the Complex of Ortho-Ester Tetra Azophenylcalix[4]arene (TEAC) with Th(IV)