Synthesis, X-ray crystal structures and magnetic properties of CuII and MnII complexes containing imino nitroxide radicals and a dicyanamide anion

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Iwayan Dasna, Stéphane Golhen, Lahcène Ouahab, Nathalie Daro, Jean-Pascal Sutter

2001 New Journal of Chemistry Vol. 25 Issue 12 Article Cited by 44

Abstract

Two new complexes having the formula cis-Cu(imi-pPy)2[N(CN)2]2 (1) and Mn(imi-pPy)2[N(CN)2]2(H2O) 2 (2), where imi-pPy stands for 2-(4-pyridyl)-4,4,5,5-tetramethylimidazoline-1-oxyl, were synthesized and structurally and magnetically characterized. The two compounds 1 and 2 crystallize in the space groups C2/c (no. 15) and P1̄ (no. 2), respectively. The metal atoms are in a distorted octahedral geometry. 1 presents a 1D infinite chain structure and 2 has a finite structure. Antiferromagnetic interactions are observed in the Cu containing salt while ferromagnetic interactions are observed in the Mn compound but antiferromagnetic interactions dominate at very low temperature.

Affiliations

Laboratoire de Chimie du Solide et Inorganique Moléculaire (CNRS UMR 6511), Institut de Chimie de Rennes, Université de Rennes 1, Campus Beaulieu 35042, Rennes cedex, France; Laboratoire des Sciences Moléculaires (CNRS UPR 9048), ICMCB, 33608 Pessac, France; Jurusan Kimia, FMIPA, Universitas Negeri Malang, Malang 65145, Jl. Surabaya 6, Indonesia