%0 Journal Article %1 Gudat.2004 %A Gudat, Dietrich %A Dogan, Akbey %A Kaim, Wolfgang %A Klein, Axel. %D 2004 %J Magnetic Resonance in Chemistry %K NMR azine chelating complex ligand multifunctional multinuclear organoplatinum %N 9 %P 781--787 %R 10.1002/mrc.1407 %T Multinuclear NMR study of some organoplatinum complexes containing multifunctional azines as chelating ligands %V 42 %X 1H-detected indirect NMR techniques were used to det. 15N and 195Pt NMR parameters for organoplatinum(IV) complexes and one Pt(II) complex contg. N-based azobispyridine, bispyridyltetrazine, and bipyrimidine ligands. The inverse technique permitted the detection of small 4J(Pt,H) and 5J(Pt,H) long-range couplings and the acquisition of 15N NMR data in natural isotopic abundance via nJ(N,H) intra- and inter-ligand couplings, but failed in cases where coherence transfer is quenched by rapid relaxation of the metal atom. In one case, anal. of satellite patterns in a set of 2H,15N, 1H,195Pt and 1H,13C correlation spectra allowed a pos. sign to be detd. for 1J(Pt,15N). Qual. arguments are presented to explain the obsd. 15N coordination shifts in complexes with different azine ligands in terms of azine-M dative bond formation and LnM-azine back-donation. [on SciFinder(R)]

@article{Gudat.2004, abstract = {1H-detected indirect NMR techniques were used to det. 15N and 195Pt NMR parameters for organoplatinum(IV) complexes and one Pt(II) complex contg. N-based azobispyridine, bispyridyltetrazine, and bipyrimidine ligands. The inverse technique permitted the detection of small 4J(Pt,H) and 5J(Pt,H) long-range couplings and the acquisition of 15N NMR data in natural isotopic abundance via nJ(N,H) intra- and inter-ligand couplings, but failed in cases where coherence transfer is quenched by rapid relaxation of the metal atom. In one case, anal. of satellite patterns in a set of 2H,15N, 1H,195Pt and 1H,13C correlation spectra allowed a pos. sign to be detd. for 1J(Pt,15N). Qual. arguments are presented to explain the obsd. 15N coordination shifts in complexes with different azine ligands in terms of azine-M dative bond formation and LnM-azine back-donation. [on SciFinder(R)]}, added-at = {2022-06-15T11:26:56.000+0200}, author = {Gudat, Dietrich and Dogan, Akbey and Kaim, Wolfgang and Klein, Axel.}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/23a405b21faf18bc68f194758f73260ad/huebleriac}, doi = {10.1002/mrc.1407}, interhash = {011913a433c16bbac29f866db2a7aa9b}, intrahash = {3a405b21faf18bc68f194758f73260ad}, issn = {0749-1581}, journal = {Magnetic Resonance in Chemistry}, keywords = {NMR azine chelating complex ligand multifunctional multinuclear organoplatinum}, number = 9, pages = {781--787}, timestamp = {2022-06-15T09:26:56.000+0200}, title = {Multinuclear NMR study of some organoplatinum complexes containing multifunctional azines as chelating ligands}, volume = 42, year = 2004 }