Cycloheptatrienylidene (CHT)-palladium complexes may react with N-donor molecules, showing two different pathways of reaction, either nucleophilic attack on the CHT ligand or coordination to the metal center. The first variant leads to a formation of water-soluble eta(3)-cycloheptatrienyl complexes, as in the case of 3,5-lutidine or 3-chloropyridine. Reaction with 2,6-lutidine, on the other hand, yields monomeric pyridine-substituted CHT-Pd compounds comparable to NHC-PEPPSI complexes. Reaction with 1-methylimidazole yields both a dimeric water-soluble cycloheptatrienyl palladium complex and a monomeric CHT-Pd compound, depending on the conditions of the reaction. Furthermore, a subsequent formation of a Pd-3-sandwich type complex was observed, which has been determined by single-crystal X-ray diffractometry. The nucleophilic attack of morpholine on the CHT ligand reveals another possible reaction path: removal of the CHT ligand from the metal under formation of a tropylidenimmonium cation.     «

Cycloheptatrienylidene (CHT)-palladium complexes may react with N-donor molecules, showing two different pathways of reaction, either nucleophilic attack on the CHT ligand or coordination to the metal center. The first variant leads to a formation of water-soluble eta(3)-cycloheptatrienyl complexes, as in the case of 3,5-lutidine or 3-chloropyridine. Reaction with 2,6-lutidine, on the other hand, yields monomeric pyridine-substituted CHT-Pd compounds comparable to NHC-PEPPSI complexes. Reaction...     »

ISI Document Delivery No.: 050EI Times Cited: 0 Cited Reference Count: 22 Mantas-Oektem, Kevser Oefele, Karl Poethig, Alexander Bechlars, Bettina Herrmann, Wolfgang A. Kuehn, Fritz E. Kuhn, Fritz/A-3113-2010; Poethig, Alexander/A-9396-2013; Herrmann, Wolfgang/A-3588-2010 TUM Graduate School The authors are grateful to Dr. Gabriele Raudaschl-Sieber for the measurement of solid-state NMR and Dr. Markus Drees for performing the DFT calculations. K.M.-O. thanks the TUM Graduate School for financial support. 0 Amer chemical soc Washington     «

ISI Document Delivery No.: 050EI Times Cited: 0 Cited Reference Count: 22 Mantas-Oektem, Kevser Oefele, Karl Poethig, Alexander Bechlars, Bettina Herrmann, Wolfgang A. Kuehn, Fritz E. Kuhn, Fritz/A-3113-2010; Poethig, Alexander/A-9396-2013; Herrmann, Wolfgang/A-3588-2010 TUM Graduate School The authors are grateful to Dr. Gabriele Raudaschl-Sieber for the measurement of solid-state NMR and Dr. Markus Drees for performing the DFT calculations. K.M.-O. thanks the TUM Graduate School for financia...     »