%0 Journal Article %1 Schnoedt.2011b %A Schnoedt, Johannes %A Sieger, Monika %A Sarkar, Biprajit %A Fiedler, Jan %A Manzur, Jorge S. %A Su, Cheng-Yong %A Kaim, Wolfgang. %D 2011 %J Zeitschrift fuer Anorganische und Allgemeine Chemie %K chelate complex complex;cyclic complex;reversible copper donor nitrogen oxidn prepn;crystal structure sulfur tetradentate voltammetry %N 7-8 %P 930--934 %R 10.1002/zaac.201100026 %T Copper(I) Chelation by Tetradentate NSSN Donor Ligands: Reversible Oxidation but no Oxygenation %V 637 %X The copper(I) complexes [Cu(L4)](ClO4), L4 = 1,6-bis(N-methyl-1H-benzimidazol-2-yl)-2,5-dithiahexane (bmbdh) or 1,7-bis(N-methyl-1H-benzimidazol-2-yl)-2,6-dithiaheptane (bmdhp) were obtained and studied through structure anal. (bmdhp compds.), cyclic voltammetry, UV/visible/NIR and EPR spectroelectrochem. Structure comparison of the complexes [Cu(bmdhp)](ClO4) (1) and [Cu(bmdhp)](SO3CF3) (2) with the previously reported [CuI(bdhp)(H2O)](PF6)0.66(BF4)0.34 (4), bdhp = 1,7-bis(1H-benzimidazol-2-yl)-2,6-dithiaheptane, with the related [CuI(mmb)2](BF4) (5), mmb = 1-methyl-2-methylthiomethyl-1H-benzimidazole, with the oxidized [CuII(bmdhp)(H2O)](ClO4)2 (7), and with the zinc(II) species [Zn(bmbdh)(H2O)(SO3CF3)](SO3CF3) (8) and [Zn(m-bmdhp)(H2O)(SO3CF3)]2(SO3CF3) (9) reveal a variety of coordination nos., L4 ligand coordination modes, M-N bond lengths and esp. N-M-N angles, affecting the accessibility of the central metal ions. Electronic consequences as evident from oxidn. potentials and from EPR and absorption spectra of the copper(II) forms are discussed. The lack of reactivity of the copper(I) compds. towards O2 is attributed to steric shielding and to electronic effects from two p accepting thioether donors. [on SciFinder(R)]

@article{Schnoedt.2011b, abstract = {The copper(I) complexes [Cu(L4)](ClO4), L4 = 1,6-bis(N-methyl-1H-benzimidazol-2-yl)-2,5-dithiahexane (bmbdh) or 1,7-bis(N-methyl-1H-benzimidazol-2-yl)-2,6-dithiaheptane (bmdhp) were obtained and studied through structure anal. (bmdhp compds.), cyclic voltammetry, UV/visible/NIR and EPR spectroelectrochem. Structure comparison of the complexes [Cu(bmdhp)](ClO4) (1) and [Cu(bmdhp)](SO3CF3) (2) with the previously reported [CuI(bdhp)(H2O)](PF6)0.66(BF4)0.34 (4), bdhp = 1,7-bis(1H-benzimidazol-2-yl)-2,6-dithiaheptane, with the related [CuI(mmb)2](BF4) (5), mmb = 1-methyl-2-methylthiomethyl-1H-benzimidazole, with the oxidized [CuII(bmdhp)(H2O)](ClO4)2 (7), and with the zinc(II) species [Zn(bmbdh)(H2O)(SO3CF3)](SO3CF3) (8) and [Zn(\textgreek{m}-bmdhp)(H2O)(SO3CF3)]2(SO3CF3) (9) reveal a variety of coordination nos., L4 ligand coordination modes, M-N bond lengths and esp. N-M-N angles, affecting the accessibility of the central metal ions. Electronic consequences as evident from oxidn. potentials and from EPR and absorption spectra of the copper(II) forms are discussed. The lack of reactivity of the copper(I) compds. towards O2 is attributed to steric shielding and to electronic effects from two \textgreek{p} accepting thioether donors. [on SciFinder(R)]}, added-at = {2022-06-15T11:26:56.000+0200}, author = {Schnoedt, Johannes and Sieger, Monika and Sarkar, Biprajit and Fiedler, Jan and Manzur, Jorge S. and Su, Cheng-Yong and Kaim, Wolfgang.}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/266cbb30e3f9896bca4ac12b2641d4e33/huebleriac}, doi = {10.1002/zaac.201100026}, interhash = {75e33e9efd9cf05e7d12e0649e8ee80f}, intrahash = {66cbb30e3f9896bca4ac12b2641d4e33}, issn = {0044-2313}, journal = {Zeitschrift fuer Anorganische und Allgemeine Chemie}, keywords = {chelate complex complex;cyclic complex;reversible copper donor nitrogen oxidn prepn;crystal structure sulfur tetradentate voltammetry}, number = {7-8}, pages = {930--934}, timestamp = {2022-06-15T09:26:56.000+0200}, title = {Copper(I) Chelation by Tetradentate NSSN Donor Ligands: Reversible Oxidation but no Oxygenation}, volume = 637, year = 2011 }