The new copper(I) complexes Cu(L1)2(BF4), L1 = 2-pyridyl-N-(2'-methylthiophenyl)methyleneimine, and Cu(L2)2(ClO4), L2 = 2-pyridyl-N-(2'-benzylthiophenyl)methyleneimine, were prepd. and structurally characterized. In contrast to the known Cu(L1)2(ClO4)2, which exhibits partial thioether S binding to effect five-coordinate Cu2+, the copper(I) compds. reported here contain four-coordinate metal ions with exclusively N-donor binding. Cyclic voltammetry reveals a fully reversible oxidn. of the CuI species, which suggests a small barrier for reorganization. The redn. at neg. potentials is irreversible for compds. Cu(L)2(X) and for the structurally characterized new compd. Cu(L1)(PPh3)2(ClO4). UV/visible spectroelectrochem. shows the typical low-energy absorption bands of copper(I) (MLCT transition) and copper(II) (ligand-field transition) in the visible region; the CuII form develops an intense band at 350 nm attributed to a S-to-Cu ligand-to-metal charge transfer (LMCT). on SciFinder(R)
%0 Journal Article
%1 Schnoedt.2011
%A Schnoedt, Johannes
%A Manzur, Jorge
%A Garcia, Ana-Maria
%A Hartenbach, Ingo
%A Su, Cheng-Yong
%A Fiedler, Jan
%A Kaim, Wolfgang.
%D 2011
%J European Journal of Inorganic Chemistry
%K complex copper crystal cyclic prepn pyridylalkylthiophenylmethyleneimine structure voltammetry
%N 9
%P 1436--1441
%R 10.1002/ejic.201001183
%T Coordination of a Hemilabile N,N,S Donor Ligand in the Redox System CuL2+/2+, L = 2-Pyridyl-N-(2'-alkylthio-phenyl)methyleneimine
%X The new copper(I) complexes Cu(L1)2(BF4), L1 = 2-pyridyl-N-(2'-methylthiophenyl)methyleneimine, and Cu(L2)2(ClO4), L2 = 2-pyridyl-N-(2'-benzylthiophenyl)methyleneimine, were prepd. and structurally characterized. In contrast to the known Cu(L1)2(ClO4)2, which exhibits partial thioether S binding to effect five-coordinate Cu2+, the copper(I) compds. reported here contain four-coordinate metal ions with exclusively N-donor binding. Cyclic voltammetry reveals a fully reversible oxidn. of the CuI species, which suggests a small barrier for reorganization. The redn. at neg. potentials is irreversible for compds. Cu(L)2(X) and for the structurally characterized new compd. Cu(L1)(PPh3)2(ClO4). UV/visible spectroelectrochem. shows the typical low-energy absorption bands of copper(I) (MLCT transition) and copper(II) (ligand-field transition) in the visible region; the CuII form develops an intense band at 350 nm attributed to a S-to-Cu ligand-to-metal charge transfer (LMCT). on SciFinder(R)
@article{Schnoedt.2011,
abstract = {The new copper(I) complexes [Cu(L1)2](BF4), L1 = 2-pyridyl-N-(2'-methylthiophenyl)methyleneimine, and [Cu(L2)2](ClO4), L2 = 2-pyridyl-N-(2'-benzylthiophenyl)methyleneimine, were prepd. and structurally characterized. In contrast to the known [Cu(L1)2](ClO4)2, which exhibits partial thioether S binding to effect five-coordinate Cu2+, the copper(I) compds. reported here contain four-coordinate metal ions with exclusively N-donor binding. Cyclic voltammetry reveals a fully reversible oxidn. of the CuI species, which suggests a small barrier for reorganization. The redn. at neg. potentials is irreversible for compds. [Cu(L)2](X) and for the structurally characterized new compd. [Cu(L1)(PPh3)2](ClO4). UV/visible spectroelectrochem. shows the typical low-energy absorption bands of copper(I) (MLCT transition) and copper(II) (ligand-field transition) in the visible region; the CuII form develops an intense band at 350 nm attributed to a S-to-Cu ligand-to-metal charge transfer (LMCT). [on SciFinder(R)]},
added-at = {2019-07-15T13:41:23.000+0200},
author = {Schnoedt, Johannes and Manzur, Jorge and Garcia, Ana-Maria and Hartenbach, Ingo and Su, Cheng-Yong and Fiedler, Jan and Kaim, Wolfgang.},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2067601bede99cc4249b014731f02a9cd/b_schwederski},
doi = {10.1002/ejic.201001183},
interhash = {dbf29cc6447fe0ba508fa8221b5ef58a},
intrahash = {067601bede99cc4249b014731f02a9cd},
issn = {1434-1948},
journal = {European Journal of Inorganic Chemistry},
keywords = {complex copper crystal cyclic prepn pyridylalkylthiophenylmethyleneimine structure voltammetry},
number = 9,
pages = {1436--1441},
timestamp = {2019-07-15T11:42:10.000+0200},
title = {Coordination of a Hemilabile N,N,S Donor Ligand in the Redox System [CuL2]+/2+, L = 2-Pyridyl-N-(2'-alkylthio-phenyl)methyleneimine},
year = 2011
}
