Journal
DALTON TRANSACTIONS
Volume 48, Issue 34, Pages 12839-12849Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9dt02196e
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Funding
- Fundacao para a Ciencia e a Tecnologia (FCT), Portugal [PTDC/QUI-QIN/29778/2017, PTDC/QEQ-QIN/3967/2014, UID/QUI/00100/2019]
- FCT [DL/57/2017, IST-ID/102/2018]
- IST [DL/57/2017, IST-ID/102/2018]
- National Natural Science Foundation of China [21871274]
- Fundação para a Ciência e a Tecnologia [PTDC/QUI-QIN/29778/2017] Funding Source: FCT
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The new aroylhydrazone N'-(di(pyridin-2-yl) methylene) pyrazine-2-carbohydrazide (HL) species, rich in N-donor sites, has been used to synthesize Cu(II) compounds with different nuclearities, viz. the binuclear [Cu2(mu-1.N3,2.N2O-L)(Cl) 3(MeOH)] (1), the octanuclear [Cu4(mu-1.N3,2.N2O-L) 2(mu-Cl) 3(Cl) 3] 2 (2) and the 1D coordination polymer [Cu3(mu 3-1.N3,2.N2O, 3.N-L)(mu-NO3)(NO3) 3(H2O) 3] n center dot nNO3 (3). They have been characterized by elemental analysis, FT-IR and single crystal X-ray diffraction. The magnetic properties of 2 and 3 have been explored using variable temperature magnetic measurements. The catalytic performances of the compounds were evaluated towards the peroxidative oxidation of o-, p-and m-xylenes under microwave irradiation, leading to the formation of the corresponding methyl benzyl alcohol, tolualdehyde and toluic acid as the major products. Complex 3 exhibits the best catalytic activity towards the oxidation of p-xylene with a total yield of 37% (4-methylbenzyl alcohol + p-tolualdehyde + p-toluic acid).
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