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- W2586225904 abstract "Several coordination compounds, based on Cd halides and 2‐methylpyrazine (Mepyz) or 2‐chloropyrazine (Clpyz) as N‐donor coligands, are synthesized and their crystal structures determined by either single‐crystal or X‐ray powder diffraction (XRPD). In [CdX 2 (2‐Clpyz) 2 ] n (X = Cl: 1 ‐Cl‐Clpyz; X = Br: 1 ‐Br‐Clpyz; and X = I: 1 ‐I‐Clpyz) and [CdX 2 (2‐Mepyz) 2 ] n (X = Cl: 1 ‐Cl‐Mepyz; X = Br: 1 ‐Br‐Mepyz; and X = I: 1 ‐I‐Mepyz), the Cd cations are octahedrally coordinated by two N‐donor ligands and are linked into chains by the halide anions that share common edges. In the ligand‐deficient compounds [CdX 2 (2‐methylpyrazine)] n (X = Cl: 2 ‐Cl‐Mepyz; X = Br: 2 ‐Br‐Mepyz; and X = I: 2 ‐I‐Mepyz), similar CdX 2 chains, which are connected into layers by the N‐donor ligands, are observed. Thermal analysis of all 1 ‐Mepyz compounds shows a transformation into 2 ‐Mepyz, which is not observed for the 2‐chloropyrazine compounds. On further heating, compounds of composition [(CdX 2 ) 2 (2‐Mepyz)] n (X = Cl: 3 ‐Cl‐Mepyz; X = Br: 3 ‐Br‐Mepyz) and [(CdI 2 ) 3 (2‐Mepyz) 2 ] ( 4 ‐I‐Mepyz) are observed. A discrete complex, with the composition CdI 2 (2‐Mepyz) 2 monohydrate ( 1 ‐I‐Mepyz‐H 2 O), and a hydrate with the composition [(CdI 2 )(2‐Mepyz)] · 1.5H 2 O ( 2 ‐I‐Mepyz‐H 2 O) with an unknown structure, were also synthesized. Both lose the water molecules upon heating. Luminescence measurements show blue to orange emissions in the range of ca. 22530–16276 cm –1 , depending on the halide or pyrazine substituent, as well as the metal halide/ligand ratio." @default.
- W2586225904 created "2017-02-17" @default.
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- W2586225904 creator A5085201030 @default.
- W2586225904 date "2017-03-03" @default.
- W2586225904 modified "2023-10-16" @default.
- W2586225904 title "CdX <sub>2</sub> Coordination Polymers with 2‐Chloropyrazine and 2‐Methylpyrazine: Similar Ligands – Similar Structures – Different Reactivity" @default.
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- W2586225904 doi "https://doi.org/10.1002/ejic.201700031" @default.
- W2586225904 hasPublicationYear "2017" @default.
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