Treatment of azophenine (ap) with Cu(PPh3)4BF4 gave Cu(PPh3)2(ap)BF4 (I). I.3Me2CO is monoclinic, space group P21/c, Z = 4, R = 0.070, Rw = 0.194. The 4-coordinate Cu(I) center is bound in a chelate manner by 2 o-quinonediimine N-donor centers. There has been an isomerization from the usually more stable p-quinonediimine state the higher energy o-quinonediimine form in the formation of the complex. This situation results in the occurrence of a metal-to-ligand charge transfer absorption of the complex at 525 nm; the long-wavelength intraquinone transition at 390 nm to shifted to 395 nm in the complex. on SciFinder(R)
%0 Journal Article
%1 Rall.1998
%A Rall, Jochen
%A Stange, Andreas F.
%A Hubler, Klaus
%A Kaim, Wolfgang.
%D 1998
%J Angewandte Chemie, International Edition
%K azophenine complex complex;isomerization complexation copper prepn structure structure;crystal
%N 19
%P 2681--2682
%R 10.1002/(SICI)1521-3773(19981016)37:19\textless2681::AID-ANIE2681\textgreater3.0.CO;2-9
%T A coordination-induced 1,4 $\rightarrow$ 1,2-quinonediimine isomerization
%V 37
%X Treatment of azophenine (ap) with Cu(PPh3)4BF4 gave Cu(PPh3)2(ap)BF4 (I). I.3Me2CO is monoclinic, space group P21/c, Z = 4, R = 0.070, Rw = 0.194. The 4-coordinate Cu(I) center is bound in a chelate manner by 2 o-quinonediimine N-donor centers. There has been an isomerization from the usually more stable p-quinonediimine state the higher energy o-quinonediimine form in the formation of the complex. This situation results in the occurrence of a metal-to-ligand charge transfer absorption of the complex at 525 nm; the long-wavelength intraquinone transition at 390 nm to shifted to 395 nm in the complex. on SciFinder(R)
@article{Rall.1998,
abstract = {Treatment of azophenine (ap) with [Cu(PPh3)4]BF4 gave [Cu(PPh3)2(ap)]BF4 (I). I.3Me2CO is monoclinic, space group P21/c, Z = 4, R = 0.070, Rw = 0.194. The 4-coordinate Cu(I) center is bound in a chelate manner by 2 o-quinonediimine N-donor centers. There has been an isomerization from the usually more stable p-quinonediimine state the higher energy o-quinonediimine form in the formation of the complex. This situation results in the occurrence of a metal-to-ligand charge transfer absorption of the complex at 525 nm; the long-wavelength intraquinone transition at 390 nm to shifted to 395 nm in the complex. [on SciFinder(R)]},
added-at = {2019-07-15T13:41:23.000+0200},
author = {Rall, Jochen and Stange, Andreas F. and Hubler, Klaus and Kaim, Wolfgang.},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/283ab4291e927674a45c2be4d7fe1f64f/b_schwederski},
doi = {10.1002/(SICI)1521-3773(19981016)37:19{\textless}2681::AID-ANIE2681{\textgreater}3.0.CO;2-9},
interhash = {dbf799de686915222bd4d4ac81df138e},
intrahash = {83ab4291e927674a45c2be4d7fe1f64f},
issn = {1433-7851},
journal = {Angewandte Chemie, International Edition},
keywords = {azophenine complex complex;isomerization complexation copper prepn structure structure;crystal},
number = 19,
pages = {2681--2682},
timestamp = {2019-07-15T11:42:10.000+0200},
title = {A coordination-induced 1,4 $\rightarrow$ 1,2-quinonediimine isomerization},
volume = 37,
year = 1998
}
