Results 261 to 270 of about 1,613,911 (283)

Synthesis and Crystal Structure of Dissymmetrical Double Schiff Base Cu(II) Homobinuclear and Cu(II)‐Mg(II)‐Cu(II) Heterotrinuclear Complexes

Chinese Journal of Chemistry, 2006
AbstractHomobinuclear complex (HCuL)2 (1) (H3L: N‐3‐carboxylsalicylidene‐N′‐salicylaldehyde‐1,2‐diaminoethane) was obtained from self‐organization of the reported complex HCuL, and its crystal structure was determined through X‐ray diffraction at room temperature. The crystal of complex 1 belongs to monolinic system, the space group Cc, a=2.5326(5) nm,
Ruo‐Jie Tao, Chong‐Zhen Mei, Bing‐Tao Liu, Jing‐Yang Niu   +3 more
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Thermal Splitting of Bis-Cu(II) Octaphyrin(1.1.1.1.1.1.1.1) into Two Cu(II) Porphyrins

Journal of the American Chemical Society, 2004
When heated, bis-Cu(II) octaphyrin(1.1.1.1.1.1.1.1) is quantitatively split into two Cu(II) porphyrins both in solution and film states, which is accompanied by large absorption spectral changes.
Tanaka, Y, Hoshino, W, Shimizu, S, Youfu, K, Aratani, N, Maruyama, N, Fujita, S, Osuka, A   +7 more
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On Cu(II)–Cu(II) distance measurements using pulsed electron electron double resonance

Journal of Magnetic Resonance, 2007
The effects of orientational selectivity on the 4-pulse electron electron double resonance (PELDOR) ESR spectra of coupled Cu(II)-Cu(II) spins are presented. The data were collected at four magnetic fields on a poly-proline peptide containing two Cu(II) centers.
Zhongyu, Yang, James, Becker, Sunil, Saxena   +2 more
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Molecular Cu^II‐O‐Cu^IIComplexes: Still Waters Run Deep

Angewandte Chemie International Edition, 2014
AbstractResearch on O2activation at ligated CuIis fueled by its biological relevance and the quest for efficient oxidation catalysts. A rarely observed reaction is the formation of a CuII‐O‐CuIIspecies, which is more special than it appears at first sight: a single oxo ligand between two CuIIcenters experiences considerable electron density, and this ...
Peter, Haack, Christian, Limberg
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Ratiometric and selective fluorescent chemodosimeter for Cu(II) by Cu(II)‐induced oxidation

Luminescence, 2008
AbstractA new rhodamine derivative, rhodamine B 4‐N,N‐dimethylaminobenzaldehyde hydrazone (1), was designed for ratiometric sensing of Cu(II) selectively. A red‐shift from 515 to 585 nm was observed in the fluorescence spectrum when Cu(II) was added to 1 in acetonitrile. Other metal ions of interest showed no ratiometric response.
Yu, Xiang, Aijun, Tong
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???????????? ???????????????????????????????????? Cu (II) ?? Zn (II) ?? ???? ????????????????

2022
?????????????? ?????????????????????? ???????????????????? ???? ???????????? ?????????????????????????? ???????????????? ?? ?????????????????????????????? ?????????????????????????? ?????????????????? ???????????????? ?????? ??????????. ???????? ?????????????? ?????????????????????? ???????????????????????? ?????????? ???????????? ????????????????????,
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???????????????????????????????????? ?????????????? 4-???????????????????????????????????? ?? ?????????????????? ???????????????? ?? ?????????????????????? Cu (II)

2022
???????? ?????????????????? ???????????? - ???????????????? ?????????????????????? ?????????????? ????-?????????????? ?? ?????????????? 4-.?????? - Cu (II) - ?????????? ?? ???????????????? ??????????, ?? ?????????? ???????????????????? ?????????????????????? ???? ???????????????????? ?????? ?????????????????????? ???????????? ???????? ?? ???????????????
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??????????????????-????????????-?????????????????????? ???????????????????? Cu (II), Cd (II), Zn (II) ???? Pb (II) ?? ???????????? ???????? ???? ?????????????????? ????????????????????, ???????????????????????????? ??????????????????????????????????????

2022
The sorption of metal ions on silica with covalently grafted propylthioethyleamine groups was studied. Quantitative sorption is observed at ???? 6.5 (Cu), ???? 5.5 (Pb), ???? 7 (Zn and Cd). It was stated that composition of complexes that are formed at the surface is ML (for Zn and Cd) and ML??? (for Cu and Pb). The detection limit obtained by sorption
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