%0 Journal Article %1 Vogler.1992 %A Vogler, Conny %A Kaim, Wolfgang. %D 1992 %J Zeitschrift fuer Naturforschung, B: A Journal of Chemical Sciences %K bidiazine bipyrazine bipyridazine bipyrimidine;redn charge complex complex;copper copper potential transfer %N 8 %P 1057--1062 %R 10.1515/znb-1992-0801 %T Mononuclear bis(triphenylphosphine)copper(I) complexes of bidiazines %V 47 %X The cationic d10 metal complexes (bdz)Cu(PPh3)2+ of the p accepting bidiazine (bdz) chelate ligands 3,3'-bipyridazine, 2,2'-bipyrazine, 2,2'- and 4,4'-bipyrimidine were prepd. and compared with the analogous complex of 2,2'-bipyridine. The long wavelength metal-to-ligand charge-transfer (MLCT) absorption max. and the redn. potentials indicate relatively little p* orbital stabilization by +Cu(PPh3)2. The particular d orbital splitting in a tetrahedral ligand field results in an addnl. contribution from Dt to the energy difference between the 1st and 2nd MLCT band. Only the most easily reduced complexes of 4,4'-bipyrimidine and 2,2'-bipyrazine yield neutral radical complexes (Cu(0)) which were characterized by ESR spectroscopy. on SciFinder(R)

@article{Vogler.1992, abstract = {The cationic d10 metal complexes [(bdz)Cu(PPh3)2]+ of the \textgreek{p} accepting bidiazine (bdz) chelate ligands 3,3'-bipyridazine, 2,2'-bipyrazine, 2,2'- and 4,4'-bipyrimidine were prepd. and compared with the analogous complex of 2,2'-bipyridine. The long wavelength metal-to-ligand charge-transfer (MLCT) absorption max. and the redn. potentials indicate relatively little \textgreek{p}* orbital stabilization by +Cu(PPh3)2. The particular d orbital splitting in a tetrahedral ligand field results in an addnl. contribution from \textgreek{D}t to the energy difference between the 1st and 2nd MLCT band. Only the most easily reduced complexes of 4,4'-bipyrimidine and 2,2'-bipyrazine yield neutral radical complexes (Cu(0)) which were characterized by ESR spectroscopy. [on SciFinder(R)]}, added-at = {2022-06-15T11:26:56.000+0200}, author = {Vogler, Conny and Kaim, Wolfgang.}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2d75fbe06a3a5153515364ec5fc976c6f/huebleriac}, doi = {10.1515/znb-1992-0801}, interhash = {1fd28c76f69600debe6737326a6d0182}, intrahash = {d75fbe06a3a5153515364ec5fc976c6f}, issn = {0932-0776}, journal = {Zeitschrift fuer Naturforschung, B: A Journal of Chemical Sciences}, keywords = {bidiazine bipyrazine bipyridazine bipyrimidine;redn charge complex complex;copper copper potential transfer}, number = 8, pages = {1057--1062}, timestamp = {2022-06-15T09:26:56.000+0200}, title = {Mononuclear bis(triphenylphosphine)copper(I) complexes of bidiazines}, volume = 47, year = 1992 }