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

Reaction of zinc(II) chloride, bromide and iodide with 2-methylpyrazine (2-Mepyz) leads to the formation of coordination compounds with the composition ZnX 2 (2-Mepyz) 2  (X = Cl;  1-Cl , Br;  1-Br  and I;  1-I ). In the compounds each Zn cation is tetrahedrally coordinated by two halide anions and two 2-methylpyrazine ligands forming discrete complexes. TG-DTA and temperature dependent PXRD measurements prove that upon heating compounds  1  transform into new compounds with the composition ZnX 2 (2-Mepyz) ( 2 ), that are subsequently converted into compounds with the composition (ZnX 2 ) 3 (2-Mepyz) ( 3 ) upon further heating. It was also found that compounds  2  can be prepared directly in solution. For ZnI 2 (2-Mepyz) ( 2-I ) crystals were obtained and characterized by single crystal X-ray diffraction, whereas the crystal structures of  2-Cl  and  2-Br  were determined  ab initio  from PXRD data. In these compounds the Zn cations are also tetrahedrally coordinated and linked into chains by bridging 2-methylpyrazine ligands. The (ZnX 2 ) 3 (2-Mepyz) compounds can only be obtained by thermal decomposition, and the products are of poor crystallinity and extremely hygroscopic, which prevented structure determinations.

Synthesis, crystal structure, thermal and spectroscopic properties of ZnX 2 -2-methylpyrazine (X = Cl, Br, I) coordination compounds