Structural and Magnetic Properties of Three One-Dimensional Nitrato-, Azido- and Phenoxido-Bridged Copper(Ii) Coordination Polymers

16 Pages Posted: 12 Jun 2020

See all articles by Ildiko Buta

Ildiko Buta

affiliation not provided to SSRN

Anamaria Ardelean

affiliation not provided to SSRN

Peter Lönnecke

affiliation not provided to SSRN

Ghenadie Novitchi

affiliation not provided to SSRN

Evamarie Hey-Hawkins

affiliation not provided to SSRN

Marius Andruh

affiliation not provided to SSRN

Otilia Costisor

affiliation not provided to SSRN

Abstract

Three coordination polymers, 1 ∞ [Cu 3 L 2 (NO 3 )](NO 3 )·2MeOH·2H 2 O ( 1 ), 1 ∞ [Cu 3 L 2 (N 3 )](CH 3 COO) ( 2 ) and 1 ∞ [Cu 3 L 2 (H 2 O)](ClO 4 ) 2 ( 3 ), based on the Schiff base H 2 L (H 2 L = N,N’-bis[(2-hydroxybenzilideneamino)-propyl]-piperazine) have been synthesized and characterized. X-ray single-crystal analysis shows that compounds 1 - 3 consist of trinuclear complex entities, {Cu 3 L 2 } 2+ , connected via different bridges, nitrato ( 1 ), azido ( 2 ) and phenoxido ( 3 ), depending on the nature of the counterion. The cryomagnetic measurements reveal weak ferromagnetic interactions between the copper(II) ions bridged by the nitrato ligands in 1 ( J = +1.026 cm -1 , H = - J S 1 S 2 ) and a weak antiferromagnetic coupling between the copper(II) ions connected by azido groups in 2 ( J = -0.295 cm -1 ). The exchange interaction between the copper(II) ions connected by two phenoxido groups is antiferromagnetic, J = -12.780 cm -1 .

Keywords: copper(II) complex, Schiff base ligand, coordination polymer, magnetic properties.

Suggested Citation

Buta, Ildiko and Ardelean, Anamaria and Lönnecke, Peter and Novitchi, Ghenadie and Hey-Hawkins, Evamarie and Andruh, Marius and Costisor, Otilia, Structural and Magnetic Properties of Three One-Dimensional Nitrato-, Azido- and Phenoxido-Bridged Copper(Ii) Coordination Polymers. Available at SSRN: https://ssrn.com/abstract=3625649 or http://dx.doi.org/10.2139/ssrn.3625649

Ildiko Buta

affiliation not provided to SSRN

No Address Available

Anamaria Ardelean

affiliation not provided to SSRN

No Address Available

Peter Lönnecke

affiliation not provided to SSRN

No Address Available

Ghenadie Novitchi

affiliation not provided to SSRN

No Address Available

Evamarie Hey-Hawkins

affiliation not provided to SSRN

No Address Available

Marius Andruh

affiliation not provided to SSRN

No Address Available

Otilia Costisor (Contact Author)

affiliation not provided to SSRN

No Address Available

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