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Models for copper proteins. Copper(I) and (II) complexes of a novel binucleating tetraamino-tetrathioether ligand

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Abstract

The novel binucleating ligand, 6,6 prime-methylene-bis(5 prime-amino-3 prime,4 prime-benzo-2 prime-thiapentyl)-1,11-diamino-2,3:9,10-dibenzo-4,8-dithiaundecane (H4L) was prepared and reacted with copper(II) salts in dry MeOH to yield mixtures of copper(I) and copper(II) complexes with Cl- and ClO-4 counter ions. The amine functions on the ligand release protons to form copper(I) complexes: (Cu2L)X2, where X=Cl−, ClO4-. The complexes were oxidized to (Cu2L)X4 with H2O2 in DMF; Cu(NO3)2 gave a different complex, [Cu2(H4L)(NO3)2](NO3)2, as regards proton releasing ability, coordination and oxidation number. Evidence for the structures of this new tetraamino-tetrathioether ligand and its copper complexes is provided by 1H-, 13C-n.m.r., mass, u.v.–vis., i.r. spectra, elemental analyses, molar conductivities and magnetic moments.

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Authors and Affiliations

  1. Department of Chemistry, Karadeniz Technical University, 61080, Trabzon, Turkey

    Serdar Karabocek & Saadettin Guner

  2. Department of Science Education, Karadeniz Technical University, Trabzon, Turkey

    Nevin Karabocek

Authors
  1. Serdar Karabocek
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  2. Saadettin Guner
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  3. Nevin Karabocek
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Karabocek, S., Guner, S. & Karabocek, N. Models for copper proteins. Copper(I) and (II) complexes of a novel binucleating tetraamino-tetrathioether ligand. Transition Metal Chemistry 23, 159–163 (1998). https://doi.org/10.1023/A:1006951211206

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