期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 53, 期 22, 页码 5614-5618出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201400023
关键词
azides; cycloaddition; multiple bonds; rhodium; structure elucidation
资金
- MICINN/FEDER [CTQ2011-22516]
- Gobierno de Aragon/FSE (GA/FSE, Inorganic Molecular Architecture Group) [E70]
- Gobierno de Aragon
- Austrian Science Fund (FWF) [E70] Funding Source: Austrian Science Fund (FWF)
Compounds of the late transition metals with M=X multiple bonds (X=CR2, NR, O) represent a synthetic challenge, partly overcome by preparative chemists, but with noticeable gaps in the second-and third-row elements. For example, there are no isolated examples of terminal imido rhodium complexes known to date. Described herein is the isolation, characterization, and some preliminary reactivity studies of the first rhodium complexes [Rh(PhBP3)(NR)] (PhBP3=PhB{CH2PPh2}(3)) with a multiple and terminal Rh=N bond. These imido compounds result from reactions of organic azides with the corresponding rhodium(I) complex having a labile ligand, and display a pseudo-tetrahedral core geometry with an almost linear Rh-N-C arrangement [177.5(2)degrees] and a short Rh-N bond [1.780(2) angstrom]. We also show that the Rh=N bond undergoes protonation at the nitrogen atom or addition of H-2, and also engages in nitrene-group transfer and cycloaddition reactions.
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