A no. of complexes between substituted lumazines (2,4-dioxo-(1H,3H)pteridines) or pterins (2-amino-4-oxo-(3H)pteridines) and Re(CO)3Cl were synthesized and characterized electrochem. and spectroscopically. The structure of the (6-ATML)Re(CO)3Cl deriv. (6-ATML = 6-acetyl-1,3,7-trimethyllumazine) was detd. as fac-(6-ATML)Re(CO)3Cl·3C6H6. The Re(I) center coordinates in a rather sym. fashion through the O4-N5 a-carbonylimino chelate site of 6-ATML; the potentially available acetyl function is not involved in the metal coordination. The acetyl acceptor substituent facilitates the reversible 1-electron redn. of this compd. to a persistent anion radical complex (6-ATML)Re(CO)3Cl-, which is accompanied by variable low-frequency shifts of the six carbonyl stretching bands and by the appearance of a broad EPR signal. on SciFinder(R)
%0 Journal Article
%1 JimenezPulido.2001
%A Jimenez-Pulido, Sonia B.
%A Sieger, Monika
%A Knodler, Axel
%A Heilmann, Oliver
%A Wanner, Matthias
%A Schwederski, Brigitte
%A Fiedler, Jan
%A Moreno-Carretero, Miguel N.
%A Kaim, Wolfgang.
%D 2001
%J Inorganica Chimica Acta
%K IR acetyltrimethyllumazine carbonyl chloro chloro;ESR chloro;IR chloro;lumazine chloro;rhenium crystal lumazine prepn;pterin prepn;redn prepn;spectroelectrochem pterin rev rhenium spectroelectrochem structure substituted
%N 1,2
%P 65--72
%R 10.1016/S0020-1693(01)00646-6
%T Rhenium(I) coordinated lumazine and pterin derivatives: Structure and spectroelectrochemistry of reversibly reducible (6-ATML)Re(CO)3Cl (6-ATML = 6-acetyl-1,3,7-trimethyllumazine)
%V 325
%X A no. of complexes between substituted lumazines (2,4-dioxo-(1H,3H)pteridines) or pterins (2-amino-4-oxo-(3H)pteridines) and Re(CO)3Cl were synthesized and characterized electrochem. and spectroscopically. The structure of the (6-ATML)Re(CO)3Cl deriv. (6-ATML = 6-acetyl-1,3,7-trimethyllumazine) was detd. as fac-(6-ATML)Re(CO)3Cl·3C6H6. The Re(I) center coordinates in a rather sym. fashion through the O4-N5 a-carbonylimino chelate site of 6-ATML; the potentially available acetyl function is not involved in the metal coordination. The acetyl acceptor substituent facilitates the reversible 1-electron redn. of this compd. to a persistent anion radical complex (6-ATML)Re(CO)3Cl-, which is accompanied by variable low-frequency shifts of the six carbonyl stretching bands and by the appearance of a broad EPR signal. on SciFinder(R)
@article{JimenezPulido.2001,
abstract = {A no. of complexes between substituted lumazines (2,4-dioxo-(1H,3H)pteridines) or pterins (2-amino-4-oxo-(3H)pteridines) and Re(CO)3Cl were synthesized and characterized electrochem. and spectroscopically. The structure of the (6-ATML)Re(CO)3Cl deriv. (6-ATML = 6-acetyl-1,3,7-trimethyllumazine) was detd. as [fac-(6-ATML)Re(CO)3Cl]·3C6H6. The Re(I) center coordinates in a rather sym. fashion through the O4-N5 \textgreek{a}-carbonylimino chelate site of 6-ATML; the potentially available acetyl function is not involved in the metal coordination. The acetyl acceptor substituent facilitates the reversible 1-electron redn. of this compd. to a persistent anion radical complex [(6-ATML)Re(CO)3Cl]-, which is accompanied by variable low-frequency shifts of the six carbonyl stretching bands and by the appearance of a broad EPR signal. [on SciFinder(R)]},
added-at = {2022-06-15T11:26:56.000+0200},
author = {Jimenez-Pulido, Sonia B. and Sieger, Monika and Knodler, Axel and Heilmann, Oliver and Wanner, Matthias and Schwederski, Brigitte and Fiedler, Jan and Moreno-Carretero, Miguel N. and Kaim, Wolfgang.},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/29d1d5ace9c37acec637aa2fb080e20e3/huebleriac},
doi = {10.1016/S0020-1693(01)00646-6},
interhash = {820506a28d4855ed047ab29acd380e79},
intrahash = {9d1d5ace9c37acec637aa2fb080e20e3},
issn = {0020-1693},
journal = {Inorganica Chimica Acta},
keywords = {IR acetyltrimethyllumazine carbonyl chloro chloro;ESR chloro;IR chloro;lumazine chloro;rhenium crystal lumazine prepn;pterin prepn;redn prepn;spectroelectrochem pterin rev rhenium spectroelectrochem structure substituted},
number = {1,2},
pages = {65--72},
timestamp = {2022-06-15T09:26:56.000+0200},
title = {Rhenium(I) coordinated lumazine and pterin derivatives: Structure and spectroelectrochemistry of reversibly reducible (6-ATML)Re(CO)3Cl (6-ATML = 6-acetyl-1,3,7-trimethyllumazine)},
volume = 325,
year = 2001
}
