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End-on cyanate or end-to-end thiocyanate bridged dinuclear copper(II) complexes with a tridentate Schiff base blocking ligand: synthesis, structure and magnetic studies

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Abstract

Two dinuclear copper(II) complexes, [Cu2(L)21,1-NCO)2] (1) and [Cu2(L)21,3-NCS)2]·H2O·DMF (2), have been synthesized using a tridentate N2O donor Schiff base ligand (HL), [1((2-(ethylamino)ethylimino)methyl)naphthalen-2-ol], and characterized by elemental analysis, spectral study and X-ray crystallography. Both complexes are centrosymmetric dimers in which square pyramidal copper(II) centres are connected by pseudo-halides: end-on cyanate in 1 and end-to-end (EE) thiocyanate in 2. Variable temperature (2–300 K) magnetic susceptibility measurements indicate the presence of ferromagnetic exchange coupling between copper(II) centres in complex 1 (J = 0.97 cm−1), and antiferromagnetic exchange coupling in 2 (J = −0.6 cm−1).

Graphical abstract: End-on cyanate or end-to-end thiocyanate bridged dinuclear copper(ii) complexes with a tridentate Schiff base blocking ligand: synthesis, structure and magnetic studies

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Publication details

The article was received on 17 Oct 2017, accepted on 12 Dec 2017 and first published on 13 Dec 2017


Article type: Paper
DOI: 10.1039/C7NJ03990E
Citation: New J. Chem., 2018, Advance Article
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    End-on cyanate or end-to-end thiocyanate bridged dinuclear copper(II) complexes with a tridentate Schiff base blocking ligand: synthesis, structure and magnetic studies

    S. Khan, S. Sproules, L. S. Natrajan, K. Harms and S. Chattopadhyay, New J. Chem., 2018, Advance Article , DOI: 10.1039/C7NJ03990E

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