Synthesis, crystal structure, thermal and luminescence properties of CuX(2,3-dimethylpyrazine) (X = Cl, Br, I) coordination polymers

JESS, Inke; Petr TÁBORSKÝ; Jiří POSPÍŠIL a Christian NAETHER. Synthesis, crystal structure, thermal and luminescence properties of CuX(2,3-dimethylpyrazine) (X = Cl, Br, I) coordination polymers. Dalton Transactions. The Royal Society of Chemistry, 2007, roč. 2007, č. 22, s. 2263-2270. ISSN 1477-9226.

Základní údaje

Originální název

Synthesis, crystal structure, thermal and luminescence properties of CuX(2,3-dimethylpyrazine) (X = Cl, Br, I) coordination polymers

Název česky

Syntéza, krystalová struktura, termální a luminiscenční vlastnosti CuX(2,3-dimethylpyrazine) (X = Cl, Br, I) koordinačních polymerů

Autoři

JESS, Inke; Petr TÁBORSKÝ; Jiří POSPÍŠIL a Christian NAETHER

Vydání

Dalton Transactions, The Royal Society of Chemistry, 2007, 1477-9226

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Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10402 Inorganic and nuclear chemistry

Stát vydavatele

Německo

Utajení

není předmětem státního či obchodního tajemství

Impakt faktor

Impact factor: 3.212

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/07:00050781

Organizační jednotka

Přírodovědecká fakulta

UT WoS

000246804100011

Klíčová slova anglicky

coordination polymers luminescence

Štítky

coordination polymers luminescence

Příznaky

Mezinárodní význam, Recenzováno

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Anotace

V originále

Three new coordination polymers based on CuI and 2,3-dimethylpyrazine (2,3-dmpyz) were prepared,structurally characterized and investigated for their thermal and luminescence properties. In the ligand rich 2 : 3 compound [(CuI)2(2,3-dmpyz)3] 1 (CuI)2 dimers are found, which are connected by the N-donor ligands into chains, whereas in the structure of the 1 : 1 intermediate [(CuI)(2,3-dmpyz)] 2 (CuI)4 tetramers are found, which are also connected into chains. The crystal structure of the ligand deficient 2 : 1 compound [(CuI)2(2,3-dmpyz)] 3 is built up of CuI double chains, which are connected by the 2,3-dmpyz ligands into layers. Thermal decomposition of 1 results in its direct transformation into the ligand deficient compound 3, without the formation of the 1 : 1 compound 2 as an intermediate. A similar thermal reactivity is found for compound 2, which transforms into 3 on heating. Stirring of a crystalline suspension of pure 1 or 2 in acetonitrile, always leads to a transformation into the ligand deficient compound 3 indicating that compound 3 is the most stable of all the coordination polymers, whereas compounds 1 and 2 are metastable. The luminescence properties of the CuCl and CuI coordination polymers were investigated at 298 and 77K. It was observed that the emission maxima strongly depends on the nature of the halide atom and the composition and structure of the coordination polymers. In addition, several of these compounds show luminescence thermochromism. These results are compared with those obtained for the previously reported CuCl and CuBr(2,3-dimethylpyrazine) coordination polymers.

Česky

tři nové koordinační polymery založené na bázi CuI a 2,3-dimethylpyrazine (2,3-dmpyz) byly připraveny, strukturně charakterizovány. Dále byly zkoumány jejich termální a luminiscenční vlastnosti.