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Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR
Published on: December 16, 2013
Synthesis, structure and magnetic properties of two new azido-Co(II) coordination architectures: from ferromagnetic
Bo-Wen Hu1, Jiong-Peng Zhao, Qian Yang
1Department of Chemistry, and Tianjin Key Laboratory of Metal & Molecule-based Material Chemistry, Nankai University, Tianjin, 300071, China.
Abstract:
Two new azido-Co(II) complexes with pyrazine carboxylato ligands, [Co(N(3))(L)·H(2)O](n) (L = pyrazine-2-carboxylato) (1) and [CoNa(N(3))(2)(L)](n) (2), have been obtained by carefully tuning the Co(II):N(3)(-) ratio. Here we present the structural and magnetic characterization of these new species. Modulation of the coordination environment of Co(II) leads to a variation of the magnetic properties of the obtained compounds. Complex 1 exhibits ferromagnetically coupled [Co(2)] units that form the rungs of the ladder with a nearly negligible coupling between these units, while complex 2 is a 2D arrangement of 1D Co(II) single-chain magnets.
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