Different structural types of copper(II) furan- and thiophencarboxylates: X-ray structural, EPR, spectral and magnetic analyses

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F16%3A39901657" target="_blank" >RIV/00216275:25310/16:39901657 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1515/chempap-2015-0204" target="_blank" >http://dx.doi.org/10.1515/chempap-2015-0204</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1515/chempap-2015-0204" target="_blank" >10.1515/chempap-2015-0204</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Different structural types of copper(II) furan- and thiophencarboxylates: X-ray structural, EPR, spectral and magnetic analyses

Popis výsledku v původním jazyce

Synthesis and characterization of eight new complexes of various structural types are reported. With 5-nitro-2-furancarboxylic acid (5-NO2-2-fucH), two monomeric complexes, [Cu(5-NO2-2-fuc)(2)(H2O)(2)] (II) and [Cu(5-NO2-2-fuc)(2)(H2O)(4)] (III), as well as a dimeric complex with ethylnicotinate (Etnic), [Cu(5-NO2-2-fuc)(2)(Etnic)(2)](2) (V), were prepared. With other acids: 2,5-dimethyl- 3-furancarboxylic acid (2,5-Me-2-3-fucH), 2-thiophencarboxylic acid (2-tpcH), 3-methyl2- thiophencarboxylic acid (3-Me-2-tpcH) or 5-methyl-2-thiophencarboxylic acid (5-Me-2-tpcH), only dimeric complexes [Cu(2,5-Me-2-3-fuc)(2)(H2O)](2) (I), [Cu(2,5-Me-2-3-fuc)(2)(Etnic)](2) (IV), [Cu(2-tpc) (2)(Etnic)](2) (VI), [Cu(3-Me-2-tpc)(2)(Etnic)](2) (VII) and Cu(5-Me-2-tpc)(2) (Etnic)](2) (VIII) have been synthesised. Characterizations of the complexes were based on elemental analysis and infrared, electronic, EPR and magnetic measurements. Moreover, complexes III, V, VII and VIII were also studied by X-ray structural analysis. Two structural types of dimeric complexes were observed differing in the number of carboxylate bridges. Most of the dinuclear complexes exhibit the common "paddle-wheel" structural motif while the molecular structure of V contains two pentacoordinated copper(II) ions bridged by two carboxylate groups of two 5-nitro-2-furancarboxylate ligands resulting in the intramolecular copper-copper distance of 4.4960(8) angstrom. Magnetic properties (monomeric EPR signal and isotropic exhchange constant (J of approximately 0 cm(-1)) of V confirmed a very weak magnetic interaction between copper centres. (c) 2015 Institute of Chemistry, Slovak Academy of Sciences

Název v anglickém jazyce

Different structural types of copper(II) furan- and thiophencarboxylates: X-ray structural, EPR, spectral and magnetic analyses

Popis výsledku anglicky

Synthesis and characterization of eight new complexes of various structural types are reported. With 5-nitro-2-furancarboxylic acid (5-NO2-2-fucH), two monomeric complexes, [Cu(5-NO2-2-fuc)(2)(H2O)(2)] (II) and [Cu(5-NO2-2-fuc)(2)(H2O)(4)] (III), as well as a dimeric complex with ethylnicotinate (Etnic), [Cu(5-NO2-2-fuc)(2)(Etnic)(2)](2) (V), were prepared. With other acids: 2,5-dimethyl- 3-furancarboxylic acid (2,5-Me-2-3-fucH), 2-thiophencarboxylic acid (2-tpcH), 3-methyl2- thiophencarboxylic acid (3-Me-2-tpcH) or 5-methyl-2-thiophencarboxylic acid (5-Me-2-tpcH), only dimeric complexes [Cu(2,5-Me-2-3-fuc)(2)(H2O)](2) (I), [Cu(2,5-Me-2-3-fuc)(2)(Etnic)](2) (IV), [Cu(2-tpc) (2)(Etnic)](2) (VI), [Cu(3-Me-2-tpc)(2)(Etnic)](2) (VII) and Cu(5-Me-2-tpc)(2) (Etnic)](2) (VIII) have been synthesised. Characterizations of the complexes were based on elemental analysis and infrared, electronic, EPR and magnetic measurements. Moreover, complexes III, V, VII and VIII were also studied by X-ray structural analysis. Two structural types of dimeric complexes were observed differing in the number of carboxylate bridges. Most of the dinuclear complexes exhibit the common "paddle-wheel" structural motif while the molecular structure of V contains two pentacoordinated copper(II) ions bridged by two carboxylate groups of two 5-nitro-2-furancarboxylate ligands resulting in the intramolecular copper-copper distance of 4.4960(8) angstrom. Magnetic properties (monomeric EPR signal and isotropic exhchange constant (J of approximately 0 cm(-1)) of V confirmed a very weak magnetic interaction between copper centres. (c) 2015 Institute of Chemistry, Slovak Academy of Sciences

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CA - Anorganická chemie

OECD FORD obor

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Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Chemical Papers

ISSN

0366-6352

e-ISSN

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Svazek periodika

70

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

12

Strana od-do

114-125

Kód UT WoS článku

000364582600012

EID výsledku v databázi Scopus

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