To date, only few examples of tetrazolylidene carbenes coordinated to transition metal complexes have been described. A direct comparison of "normal" tetrazolylidenes (1,4-substitution pattern) and "abnormal" tetrazolylidenes (also referred to as "mesoionic carbenes"; 1,3-substitution pattern) has not been performed at all. In this work, we describe coordination of both ligand types to a row of transition metals. For example, the first examples of tetrazolylidene Mo, Ag, or Ir complexes have been isolated and fully characterized. The mesoionic tetrazolylidene Ag compound 2d is shown to be a viable carbene transfer reagent. By means of NMR, IR, and Raman spectroscopy, as well as X-ray crystallography and computational results, the pronounced differences between the two ligand substitution patterns are highlighted. It is shown that simply changing the position of a methyl group from N3 to N4 in the heterocycle can cause enormous differences in ligand characteristics.     «

To date, only few examples of tetrazolylidene carbenes coordinated to transition metal complexes have been described. A direct comparison of "normal" tetrazolylidenes (1,4-substitution pattern) and "abnormal" tetrazolylidenes (also referred to as "mesoionic carbenes"; 1,3-substitution pattern) has not been performed at all. In this work, we describe coordination of both ligand types to a row of transition metals. For example, the first examples of tetrazolylidene Mo, Ag, or Ir complexes have be...     »

ISI Document Delivery No.: 168ET Times Cited: 0 Cited Reference Count: 83 Schaper, Lars-Arne Wei, Xuhui Altmann, Philipp J. Oefele, Karl Poethig, Alexander Drees, Markus Mink, Janos Herdtweck, Eberhardt Bechlars, Bettina Herrmann, Wolfgang A. Kuehn, Fritz E. TUM graduate school; Bavarian Network of Excellence NANOCAT The authors thank the TUM graduate school and the Bavarian Network of Excellence NANOCAT for financial support. M.D. thanks the Leibniz-Computing Center (LRZ) of the Bavarian Academy of Sciences for computational time and resources. 0 Amer chemical soc Washington     «

ISI Document Delivery No.: 168ET Times Cited: 0 Cited Reference Count: 83 Schaper, Lars-Arne Wei, Xuhui Altmann, Philipp J. Oefele, Karl Poethig, Alexander Drees, Markus Mink, Janos Herdtweck, Eberhardt Bechlars, Bettina Herrmann, Wolfgang A. Kuehn, Fritz E. TUM graduate school; Bavarian Network of Excellence NANOCAT The authors thank the TUM graduate school and the Bavarian Network of Excellence NANOCAT for financial support. M.D. thanks the Leibniz-Computing Center (LRZ) of the Bavarian Acade...     »