A series of dimesitylplatinum(ii) complexes of sym. substituted dimethyl-1,10-phenanthrolines (dmphen) was prepd. and examd. in view of their electronic structure. Electrochem. data of the parent complexes and spectroscopic data of parent and one-electron reduced species reveal the variable electronic influence of the Me substituents in different positions of the heteroarom. system. From multi-frequency S, X, K and Q-band EPR measurements of the corresponding radical anions and of analogous species with 1,10-phenanthroline, 3,4,7,8-tetramethyl-1,10-phenanthroline and 2,2'-bipyridine ligands hyperfine coupling consts. and g values were obtained and used for an estn. of the contributions from platinum orbitals to the singly occupied MO. X-Ray crystal structures are reported for (2,9-dmphen)PtMes2 and (2,9-dmphen)PtPh2, allowing us to probe the steric interactions between the Me substituents of the phenanthroline and the mesityl ligands. on SciFinder(R)
%0 Journal Article
%1 Klein.2002
%A Klein, Axel
%A McInnes, Eric J. L.
%A Kaim, Wolfgang.
%D 2002
%J Journal of the Chemical Society, Dalton Transactions
%K absorption complex complex;electrochem complex;mesityl crystal mesityl methyl methylphenanthroline mol phenyl platinum prepn redox spectra structure
%N 11
%P 2371--2378
%R 10.1039/b201419j
%T Organometallic platinum(ii) complexes of methyl-substituted phenanthrolines
%X A series of dimesitylplatinum(ii) complexes of sym. substituted dimethyl-1,10-phenanthrolines (dmphen) was prepd. and examd. in view of their electronic structure. Electrochem. data of the parent complexes and spectroscopic data of parent and one-electron reduced species reveal the variable electronic influence of the Me substituents in different positions of the heteroarom. system. From multi-frequency S, X, K and Q-band EPR measurements of the corresponding radical anions and of analogous species with 1,10-phenanthroline, 3,4,7,8-tetramethyl-1,10-phenanthroline and 2,2'-bipyridine ligands hyperfine coupling consts. and g values were obtained and used for an estn. of the contributions from platinum orbitals to the singly occupied MO. X-Ray crystal structures are reported for (2,9-dmphen)PtMes2 and (2,9-dmphen)PtPh2, allowing us to probe the steric interactions between the Me substituents of the phenanthroline and the mesityl ligands. on SciFinder(R)
@article{Klein.2002,
abstract = {A series of dimesitylplatinum(ii) complexes of sym. substituted dimethyl-1,10-phenanthrolines (dmphen) was prepd. and examd. in view of their electronic structure. Electrochem. data of the parent complexes and spectroscopic data of parent and one-electron reduced species reveal the variable electronic influence of the Me substituents in different positions of the heteroarom. system. From multi-frequency S, X, K and Q-band EPR measurements of the corresponding radical anions and of analogous species with 1,10-phenanthroline, 3,4,7,8-tetramethyl-1,10-phenanthroline and 2,2'-bipyridine ligands hyperfine coupling consts. and g values were obtained and used for an estn. of the contributions from platinum orbitals to the singly occupied MO. X-Ray crystal structures are reported for [(2,9-dmphen)PtMes2] and [(2,9-dmphen)PtPh2], allowing us to probe the steric interactions between the Me substituents of the phenanthroline and the mesityl ligands. [on SciFinder(R)]},
added-at = {2019-07-15T13:41:23.000+0200},
author = {Klein, Axel and McInnes, Eric J. L. and Kaim, Wolfgang.},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2033e59be7333482d53587e14b5b96267/b_schwederski},
doi = {10.1039/b201419j},
interhash = {891caecc932fe20ca285cb4e60c3ede6},
intrahash = {033e59be7333482d53587e14b5b96267},
issn = {1472-7773},
journal = {Journal of the Chemical Society, Dalton Transactions},
keywords = {absorption complex complex;electrochem complex;mesityl crystal mesityl methyl methylphenanthroline mol phenyl platinum prepn redox spectra structure},
number = 11,
pages = {2371--2378},
timestamp = {2019-07-15T11:42:10.000+0200},
title = {Organometallic platinum(ii) complexes of methyl-substituted phenanthrolines},
year = 2002
}