Please use this identifier to cite or link to this item: https://doi.org/10.1002/chem.200902737
Title: Pyrazole-derived remote dicarbenes: Versatile ligands for Di-and tetranuclear complexes
Authors: Han, Y. 
Lee, L.J.
Huynh, H.V. 
Keywords: Allenes
Carbenes
Palladium
Zwitterions
Issue Date: 18-Jan-2010
Source: Han, Y., Lee, L.J., Huynh, H.V. (2010-01-18). Pyrazole-derived remote dicarbenes: Versatile ligands for Di-and tetranuclear complexes. Chemistry - A European Journal 16 (3) : 771-773. ScholarBank@NUS Repository. https://doi.org/10.1002/chem.200902737
Abstract: A study was conducted to demonstrate the coordination chemistry remote and abnormal dicarbenes and their use as a new class of organometallic spacers for the formation of di- and tetranuclear PdII complexes. The suitable ligand precursors with bridges of different lengths were obtained through alkylation of 4,4'-di-iododipyrazoles with Me3OBF4 as white solids in moderate to high yields of 86%, 93% and 62%. The topology of ligand precursors ensured the formation of di- or polynuclear complexes and prevented chelation of the resulting dicarbenes. Dipyrazolium salt was reacted with a pre-mixed solution of [Pd2(dba)3]/PPh3 to synthesize a dinuclear PdII -dicarbene complex. It was also demonstrated that novel dipyrazolin-4-ylidenes were versatile building-blocks for di- or tetranuclear architectures.
Source Title: Chemistry - A European Journal
URI: http://scholarbank.nus.edu.sg/handle/10635/94635
ISSN: 09476539
DOI: 10.1002/chem.200902737
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