The crystal structure detn. of the new Rh(III)-complex (DML)(C5Me5)ClRh(PF6), (I) DML = 1,3-dimethyllumazine, reveals O4,N5 coordination of the metal to DML with not very different bond lengths of 213.0(2) pm (Rh-N) and 219.2(2) pm (Rh-O). This result stands in contrast to the previously reported structure of a cationic dihydrobiopterin bound to Mo(O)Cl3- which exhibited a very unsym. chelate arrangement. Chem. and electrochem. two-electron redn. of the Rh(III) complex led to a very labile Rh(I) species (DML)(C5Me5)Rh which is distinguished by an intense charge transfer band in the visible range. The results confirm the characterization of DML as a weak s donor/p acceptor ligand with a rather low-lying p* orbital. on SciFinder(R)
%0 Journal Article
%1 Heilmann.1994
%A Heilmann, Oliver
%A Hausen, Hans Dieter
%A Kaim, Wolfgang.
%D 1994
%J Zeitschrift fuer Naturforschung, B: A Journal of Chemical Sciences
%K cation;mol cation;redn chem crystal dimethyllumazine electrochem lumazine rhodium structure
%N 11
%P 1554--1560
%R 10.1515/znb-1994-1117
%T Organometallic rhodium(III) and -(I) complexes with 1,3-dimethyllumazine (DML). The crystal structure of (h2-(O4,N5)-DML)(h5-C5Me5)ClRh(PF6)
%V 49
%X The crystal structure detn. of the new Rh(III)-complex (DML)(C5Me5)ClRh(PF6), (I) DML = 1,3-dimethyllumazine, reveals O4,N5 coordination of the metal to DML with not very different bond lengths of 213.0(2) pm (Rh-N) and 219.2(2) pm (Rh-O). This result stands in contrast to the previously reported structure of a cationic dihydrobiopterin bound to Mo(O)Cl3- which exhibited a very unsym. chelate arrangement. Chem. and electrochem. two-electron redn. of the Rh(III) complex led to a very labile Rh(I) species (DML)(C5Me5)Rh which is distinguished by an intense charge transfer band in the visible range. The results confirm the characterization of DML as a weak s donor/p acceptor ligand with a rather low-lying p* orbital. on SciFinder(R)
@article{Heilmann.1994,
abstract = {The crystal structure detn. of the new Rh(III)-complex [(DML)(C5Me5)ClRh](PF6), (I) DML = 1,3-dimethyllumazine, reveals O4,N5 coordination of the metal to DML with not very different bond lengths of 213.0(2) pm (Rh-N) and 219.2(2) pm (Rh-O). This result stands in contrast to the previously reported structure of a cationic dihydrobiopterin bound to [Mo(O)Cl3]- which exhibited a very unsym. chelate arrangement. Chem. and electrochem. two-electron redn. of the Rh(III) complex led to a very labile Rh(I) species (DML)(C5Me5)Rh which is distinguished by an intense charge transfer band in the visible range. The results confirm the characterization of DML as a weak \textgreek{s} donor/\textgreek{p} acceptor ligand with a rather low-lying \textgreek{p}* orbital. [on SciFinder(R)]},
added-at = {2019-07-15T13:41:23.000+0200},
author = {Heilmann, Oliver and Hausen, Hans Dieter and Kaim, Wolfgang.},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2cd9e31148e30ff465a33418814db8f05/b_schwederski},
doi = {10.1515/znb-1994-1117},
interhash = {25b5926dcb3e31f426c35110f501a11d},
intrahash = {cd9e31148e30ff465a33418814db8f05},
issn = {0932-0776},
journal = {Zeitschrift fuer Naturforschung, B: A Journal of Chemical Sciences},
keywords = {cation;mol cation;redn chem crystal dimethyllumazine electrochem lumazine rhodium structure},
number = 11,
pages = {1554--1560},
timestamp = {2019-07-15T11:42:10.000+0200},
title = {Organometallic rhodium(III) and -(I) complexes with 1,3-dimethyllumazine (DML). The crystal structure of [(\textgreek{h}2-(O4,N5)-DML)(\textgreek{h}5-C5Me5)ClRh](PF6)},
volume = 49,
year = 1994
}
